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Offline Steve Walmsley (OP)

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Empire of the Stars - Updates Thread
« on: June 25, 2024, 06:33:55 AM »
Background
Japan entered World War I on the side of the Allies in 1914, seizing the opportunity of Germany's distraction with the European War to expand its sphere of influence in China and the Pacific. Soon after Japan declared war on Germany on August 23, 1914, Japanese and allied British Empire forces moved to occupy Tsingtao fortress, the German East Asia Squadron base, German-leased territories in China's Shandong Province as well as the Marianas, Caroline, and Marshall Islands in the Pacific, which were part of German New Guinea. In 1916, the Imperial Japanese Navy made a detailed survey of Truk Atoll in the Caroline Islands, with the intention of establishing a major naval base. During the survey, the Navy made a startling discovery: a massive, partially buried structure that was eventually determined to be a crashed alien spacecraft.

Within twelve months, under conditions of great secrecy, a group of top scientists from across the Empire of Japan had been assembled at Truk. The secure, isolated location allowed the Imperial Navy to maintain complete security for many years. Not even the Imperial Army was aware what was underway at Truk. At first, progress was glacially slow. As time passed and the scientists began to activate the remaining intact systems, the gradual flow of knowledge become a flood. An understanding of the Trans-Newtonian principles on which the spacecraft was based began to develop. The Imperial Navy’s scientists discovered that another dimension, which they named the Aether, existed alongside our own. The Aether had fluidic properties and was far more compressed in terms of distance between objects compared to ‘normal’ space. Eleven new elements were identified that existed primarily in the Aether but could be extracted and refined for construction purposes. Although the ramifications of these early discoveries were profound, it would take decades to fully realise their potential.

By 1926, ten years after the discovery, the Imperial Navy was testing primitive jet aircraft in the remote Marshall Islands and developing armoured vehicles for the Special Naval Landing Forces. In 1932, the Imperial Navy launched the first lunar probe from Bikini Atoll and two years later Kaigun-shōsa (lieutenant commander) Fuchida Mitsuo became the first man to walk on the Moon. The other major powers remained completely oblivious until  the Imperial Navy finally acted in June 1939. Orbiting spacecraft launched a series of nuclear strikes against Soviet, Chinese, American, British, French and Dutch targets. Every major military base in the Pacific was struck and destroyed, along with numerous cities across the globe for ‘demonstration’ purposes. The other major powers of the time were incredulous at the apparently miraculous advancements in Japanese military technology. The Imperial Japanese Army was equally stunned and its influence rapidly diminished thereafter, effectively coming under the control of the navy.

Across the globe, valiant efforts were made to withstand the irresistible forces of the Imperial Japanese Navy, but they were in vain. Despite desperate and rapid strides in many fields of science, engineering and military technology, the lead of the Empire of Japan only increased as it took full advantage of the knowledge extracted from alien computers. By 1945, the wars were over and the Empire of Japan dominated the globe. The next fifteen years were spent consolidating the Empire’s gains and pacifying the conquered territories, while the Imperial Navy built up its forces for the next stage of Japanese expansion. A shortage of personnel to oversee a global domain resulted in the introduction of women into the Imperial Navy in the late 1940s and even non-Japanese by the late 1950s. By 1960 (Imperial year 2620), the Earth was firmly under control and the Empire of Japan looked outward, preparing to become an Empire of the Stars.

Scenario
•   Starting population is two billion with standard TN setup.
•   Normal starting RP and BP.
•   Ruin chance is increased from 20% to 25%.
•   All spoilers active except Rakhas.
•   System Count is 30 for Raiders, 60 for Swarm and 100 for Invaders.
•   10 NPRs. 50-100 LY
•   NPRs can generate other NPRs with a 10% chance.
•   NPRs generate Precursors and Raiders
•   Minor Races set to 100%
•   Limited Research Admin
•   Hostility Modifier +20
•   Survey Speed 25%
•   Sol has six jump points

Earth Survey Report
Duranium:   353,700   1.00
Neutronium:   246,200   1.00
Corbomite:   251,300   1.00
Tritanium:   112,700   0.40
Boronide:   91,900   0.70
Mercassium:   158,600   0.80
Vendarite:   296,000   0.70
Sorium:   335,450   0.80
Uridium:   127,200   0.90
Corundium:   358,800   0.50
Gallicite:   197,000   1.00

SJW Note: The following designation systems are inspired by the actual Imperial Navy or Imperial Army designation systems, but they have been adapted for Aurora and modified and/or simplified for easier understanding.

Small Craft Designation System
In the 1920s, the Empire developed the Military Aircraft Designation System to specify the intended function of the variety of aircraft developed at the time. This designation system was modified for the early interstellar era to cover any spacecraft design of 1000 tons or less and comprises four parts: the Small Craft Type, the Navy Design Request Number, the Manufacturer and the Variant. The Design Request Number is effectively an increment to the number of existing designs for small craft of that type.

For example, for a theoretical A6M2, the A represents a ‘Carrier-based fighter’, the 6 indicates this is the sixth type of carrier-based fighter to be designed, the M designates the manufacturer as Mitsubishi and the number indicates this is a second variant of that type. A ‘variant’ in this context will generally indicate an improvement to the design due to new technology, without changing the basic design principles or adding any new capabilities.

A longer version of the designation system includes the year of service expressed as ‘Type’, followed by the last two digits of the Imperial Year and often an official name. For example, the Mitsubishi A6M1 ‘Reisen’ Type 00 Carrier Based Fighter would have entered service in Imperial Year 2600 (1940).

Small Craft Type
A   Carrier-based fighter
B   Carrier-based missile attack
D   Carrier-based energy attack
E   Reconnaissance
F   Observation
G   Planet-based missile attack
H    Long-Range Patrol
J   Planet-based fighter
L   Troop Transport
M   Geological Survey
P   Planet-based energy attack
R   Gravitational Survey
X   Experimental (used with other designations)

Manufacturer
A   Aichi   
D   Showa
G   Hitachi
H   Hiro
K   Kawanishi
M   Mitsubishi
N   Nakajima
Si   Showa
W   Watanabe/Kyushu
Y   Yokosuka
Z   Mizuno

Electronics Designation System
Electronics systems have a designation in the format Type x Go-Mark/Model-Variant. Type is a numeral that indicates the last two digits of the Imperial Year, Mark is the function of the sensor, Model is the general usage of the sensor and Variant indicates how many times the design has been updated. For example, a Type 12 Go-13B Navigation Sensor was originally designed in Imperial Year 2612 (1952) and will serve as an active search sensor for commercial shipping. The B indicates an update from the original design.

Mark 1: Active Search Sensor
Mark 2: Missile Detection Sensor
Mark 3: Energy Weapon Fire Control
Mark 4: Missile Fire Control
Mark 5: Thermal Detection
Mark 6: EM Detection
Mark 7: Fighter Detection

Model 1: Warships
Model 2: Capital Ships
Model 3: Commercial Vessels
Model 4: Small Craft
Model 5: Minimal operable size

Vehicle Naming System
Vehicle naming comprises three parts: a Type numeral that indicates the last two digits of the Imperial Year, a kana designation for size and a second kana designation for the number of incremental designs. For example A Type 14 Chi-Ro Battle Tank, is the second design of a medium vehicle and entered service in Imperial Year 2614 (1954). The Type 8 Ke-Ha Light Tank, is the third design of a light vehicle and entered service in Imperial Year 2608 (1948).

Ke: Light
Chi: Medium
Ju: Heavy
O: Super-heavy

Incremental Naming (Iroha) – First 12 Only.
I: 1st
Ro: 2nd
Ha 3rd
Ni: 4th
He: 5th
To: 6th
Chi: 7th
Ri: 8th
Nu: 9th
Ru: 10th
Wo: 11th
Wa: 12th

Notes on Historical Updates
1)   This history is in the form of a diary, with incidents of note recorded in present tense at the time of their occurrence.
2)   The first use of each Imperial ship name in this diary (beyond the original OOB) will be accompanied by an English translation.
3)   Japanese names are presented as family name followed by given name.
4)   Star systems will be assigned a Japanese name, except in cases where the existing name is already in general use by 1960


January 1st 1960 – State of the Imperial Japanese Navy
During the 1950s, Japan focused on the development of lasers, propulsion, armour and tracking systems, which led it to deploy warships with boosted gas core engines capable of 4000 km/s, protected by ceramic composite armour and armed with 20cm lasers for attack and 10cm railguns for defence. This approach did not include any research into missiles, shields and electronic warfare and allowed only minimal research into economic and logistics systems. These would be developed over time. While the existence of aliens remained theoretical at this point in Imperial history, there was sufficient concern about the potential threat to build a fleet on the assumption that the threat was real and immediate.

The main drawback of the energy-armed focus of the Imperial Navy was extreme short-range compared to a theoretical missile-armed opponent. As a result, the Akagi class carrier was designed to project power hundreds of millions of kilometres from the battle fleet. With that in mind, the design prioritised hangar space above all else,  allowing the Akagi to carry sixty A1M1 ‘Raiden’ (Lightning Bolt) fighters and a pair of Aichi E1A class scouts. The Imperial shipwrights intended that once the Empire of Japan developed effective missiles, the strikegroup would be updated to include missile-capable strike craft and the carrier would be refitted with a magazine. Shown below is the Akagi design as of January 1960. The carrier lacks a jump drive, so requires either a stabilised jump point or a jump-capable escort, such as a Kongo-class battlecruiser.

Akagi class Carrier      36,000 tons       621 Crew       3,991.3 BP       TCS 720    TH 2,880    EM 0
4000 km/s      Armour 2-97       Shields 0-0       HTK 158      Sensors 5/6/0/0      DCR 21-5      PPV 0
Maint Life 2.68 Years     MSP 4,340    AFR 494%    IFR 6.9%    1YR 863    5YR 12,942    Max Repair 360 MSP
Hangar Deck Capacity 17,000 tons     
Kaigun-Taisa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 3 months    Flight Crew Berths 340    Morale Check Required   

Koga-Murakama KM-720-B Gas-Core Drive  (4)    Power 2880    Fuel Use 45.08%    Signature 720    Explosion 12%
Fuel Capacity 2,000,000 Litres    Range 22.2 billion km (64 days at full power)

MK I Active Sensor (1)     GPS 6480     Range 50.1m km    Resolution 120
MK I Missile Detection Sensor (1)     GPS 6     Range 3.4m km    MCR 304.7k km    Resolution 1
MK I Commercial Thermal Sensor (1)     Sensitivity 5     Detect Sig Strength 1000:  17.7m km
MK I Commercial EM Sensor (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km

Strike Group
60x Mitsubishi A1M ‘Raiden’ Fighter   Speed: 8001 km/s    Size: 5.5
2x Aichi E1A Scout   Speed: 6001 km/s    Size: 5

The Kongo class battlecruiser is the only capital ship design of the Imperial Navy in service at the start of the interstellar era. With strong armour and twenty-four Kentaro-Sakura KS-20A Ultraviolet Lasers, the Kongo was designed for close combat with any potential alien threats. The battlecruiser is jump-capable, has a small hangar bay for a E1A scout and is equipped with four fixed launchers for Gekkō (Moonlight) Reconnaissance Drones.

Kongo class Battlecruiser      36,000 tons       1,191 Crew       5,586.5 BP       TCS 720    TH 2,880    EM 0
4000 km/s    JR 3-50      Armour 8-97       Shields 0-0       HTK 230      Sensors 10/12/0/0      DCR 20-5      PPV 208.8
Maint Life 2.06 Years     MSP 2,939    AFR 518%    IFR 7.2%    1YR 923    5YR 13,838    Max Repair 450 MSP
Hangar Deck Capacity 250 tons     Magazine 32 / 0   
Kaigun-Taisa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Flight Crew Berths 5    Morale Check Required   

Komatsu KMJ-360 Jump Drive     Max Ship Size 36000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-720-B Gas-Core Drive  (4)    Power 2880    Fuel Use 45.08%    Signature 720    Explosion 12%
Fuel Capacity 1,425,000 Litres    Range 15.8 billion km (45 days at full power)

Kentaro-Sakura KS-20A Ultraviolet Laser (24)    Range 256,000km     TS: 4,000 km/s     Power 10-3.5     ROF 15       
Takashi Kinetics TK-10A Railgun (20x4)    Range 10,000km     TS: 4,000 km/s     Power 3-3     ROF 5       
Type 15 Go-31A Laser Fire Control (4)     Max Range: 256,000 km   TS: 4,000 km/s    ECCM-0   
Type 12 Go-31A Railgun Fire Control (2)     Max Range: 64,000 km   TS: 4,000 km/s    ECCM-0   
R-40 Gaseous Fission Reactor (4)     Total Power Output 160.4    Exp 5%

Fixed Drone Launcher (4)     Missile Size: 8    Hangar Reload 141 minutes    MF Reload 23 hours
Type 11 Go-41 Drone Guidance (1)     Range 14.9m km    Resolution 120

Type 12 Go-12A Capital Ship Sensor (1)     GPS 17280     Range 81.8m km    Resolution 120
Type 12 Go-21A Missile Detection (1)     GPS 6     Range 3.4m km    MCR 304.7k km    Resolution 1
Type 10 Go-61A Passive Sensor (1)     Sensitivity 12     Detect Sig Strength 1000:  27.4m km
Type 8 Go-51A Passive Sensor (1)     Sensitivity 10     Detect Sig Strength 1000:  25m km

Strike Group
1x Aichi E1A Scout   Speed: 6001 km/s    Size: 5

The Nagara class light cruiser serves as the workhorse of the Imperial Japanese Navy, intended to fill most day-to-day tasks and deployments, as the carriers and capital ships will only be deployed against significant threats. The main armament comprises twelve Kentaro-Sakura KS-20A Ultraviolet Lasers, supported by a secondary battery of railguns for point defence. The Nagara has a small hangar for an Aichi E1A scout and a 500-ton drop bay for a Naval Landing Force, used to capture disabled ships or unprotected alien outposts.

Nagara class Light Cruiser      18,000 tons       595 Crew       2,604.4 BP       TCS 360    TH 1,440    EM 0
4000 km/s      Armour 6-61       Shields 0-0       HTK 116      Sensors 10/12/0/0      DCR 10-5      PPV 108
Maint Life 2.21 Years     MSP 1,404    AFR 259%    IFR 3.6%    1YR 386    5YR 5,797    Max Repair 360 MSP
Hangar Deck Capacity 250 tons     Troop Capacity 500 tons     Boarding Capable   
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Flight Crew Berths 5    Morale Check Required   

Koga-Murakama KM-720-B Gas-Core Drive  (2)    Power 1440    Fuel Use 45.08%    Signature 720    Explosion 12%
Fuel Capacity 762,000 Litres    Range 16.9 billion km (48 days at full power)

Kentaro-Sakura KS-20A Ultraviolet Laser (12)    Range 256,000km     TS: 4,000 km/s     Power 10-3.5     ROF 15       
Takashi Kinetics TK-10A Railgun (12x4)    Range 10,000km     TS: 4,000 km/s     Power 3-3     ROF 5       
MK I Laser Fire Control (2)     Max Range: 256,000 km   TS: 4,000 km/s    ECCM-0   
MK I Railgun Fire Control (2)     Max Range: 64,000 km   TS: 4,000 km/s    ECCM-0   
R-40 Gaseous Fission Reactor (2)     Total Power Output 80.2    Exp 5%

MK I Active Sensor (1)     GPS 6480     Range 50.1m km    Resolution 120
MK I Missile Detection Sensor (1)     GPS 6     Range 3.4m km    MCR 304.7k km    Resolution 1
MK I EM Sensor (1)     Sensitivity 12     Detect Sig Strength 1000:  27.4m km
MK I Thermal Sensor (1)     Sensitivity 10     Detect Sig Strength 1000:  25m km

Strike Group / Ground Forces
1x Aichi E1A Scout   Speed: 6001 km/s    Size: 5
1x Naval Landing Force

The Sendai class light cruiser is almost identical to the Nagara and can be constructed in the same shipyard. A jump drive has been added to the design in exchange for the drop bay, hangar bay and two railguns.

Sendai class Light Cruiser      18,000 tons       610 Crew       2,780.8 BP       TCS 360    TH 1,440    EM 0
4000 km/s    JR 3-50      Armour 6-61       Shields 0-0       HTK 115      Sensors 10/12/0/0      DCR 10-5      PPV 102
Maint Life 2.15 Years     MSP 1,465    AFR 259%    IFR 3.6%    1YR 425    5YR 6,368    Max Repair 360 MSP
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Komatsu KMJ-180 Jump Drive     Max Ship Size 18000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-720-B Gas-Core Drive  (2)    Power 1440    Fuel Use 45.08%    Signature 720    Explosion 12%
Fuel Capacity 757,000 Litres    Range 16.8 billion km (48 days at full power)

Kentaro-Sakura KS-20A Ultraviolet Laser (12)    Range 256,000km     TS: 4,000 km/s     Power 10-3.5     ROF 15       
Takashi Kinetics TK-10A Railgun (10x4)    Range 10,000km     TS: 4,000 km/s     Power 3-3     ROF 5       
MK I Laser Fire Control (2)     Max Range: 256,000 km   TS: 4,000 km/s    ECCM-0   
MK I Railgun Fire Control (2)     Max Range: 64,000 km   TS: 4,000 km/s    ECCM-0   
R-40 Gaseous Fission Reactor (2)     Total Power Output 80.2    Exp 5%

MK I Active Sensor (1)     GPS 6480     Range 50.1m km    Resolution 120
MK I Missile Detection Sensor (1)     GPS 6     Range 3.4m km    MCR 304.7k km    Resolution 1
MK I EM Sensor (1)     Sensitivity 12     Detect Sig Strength 1000:  27.4m km
MK I Thermal Sensor (1)     Sensitivity 10     Detect Sig Strength 1000:  25m km

Small Craft
The Mitsubishi A1M ‘Raiden’ class fighter is the primary power projection asset of the Imperial Navy. Although it is lightly-armed, it is intended to be deployed en masse, overwhelming the enemy with numbers at point-blank range. The MK I cannon is a half-sized version of the Takashi Kinetics TK-10A Railgun used by warships for point defence.

Mitsubishi A1M ‘Raiden’ class Fighter      275 tons       1 Crew       47.1 BP       TCS 5    TH 44    EM 0
8001 km/s      Armour 1-3       Shields 0-0       HTK 1      Sensors 0/0/0/0      DCR 0-0      PPV 1.65
Maint Life 1.83 Years     MSP 10    AFR 55%    IFR 0.8%    1YR 4    5YR 56    Max Repair 22 MSP
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 0.3 days    Morale Check Required   

Kotobuki Ha-1 Gas-Core Engine (1)    Power 44.0    Fuel Use 844.23%    Signature 44.00    Explosion 20%
Fuel Capacity 7,600 Litres    Range 0.59 billion km (20 hours at full power)

MK I Cannon (1x2)    Range 10,000km     TS: 8,001 km/s     Power 1.5-1.5     ROF 5       
MK I Cannon Fire Control (1)     Max Range: 64,000 km   TS: 8,000 km/s    ECCM-0   
R-1B Gaseous Fission Reactor (1)     Total Power Output 1.5    Exp 10%
MK I Fighter Sensor (1)     GPS 2     Range 1.5m km    MCR 136.2k km    Resolution 1

The Aichi class scout is a ubiquitous design, used by almost all major warships for short-ranged reconnaissance operations.

Aichi E1A class Scout      250 tons       4 Crew       38.3 BP       TCS 5    TH 30    EM 0
6001 km/s    JR 3-50      Armour 1-3       Shields 0-0       HTK 2      Sensors 0/0/0/0      DCR 0-0      PPV 0
Maint Life 0 Years     MSP 0    AFR 49%    IFR 0.7%    1YR 3    5YR 40    Max Repair 15 MSP
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 1 months    Morale Check Required   

Komatsu KSJ-25 Jump Drive     Max Ship Size 250 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-30-B Gas Core Drive (1)    Power 30    Fuel Use 431.33%    Signature 30    Explosion 15%
Fuel Capacity 31,000 Litres    Range 5.2 billion km (9 days at full power)

MK I Navigation Sensor (1)     GPS 1440     Range 23.6m km    Resolution 120
MK I Minimal EM Sensor (1)     Sensitivity 0.6     Detect Sig Strength 1000:  6.1m km
MK I Minimal Thermal Sensor (1)     Sensitivity 0.5     Detect Sig Strength 1000:  5.6m km

Imperial Japanese Navy Order of Battle January 1960
4x Akagi class Carrier: Akagi, Hiryu, Kaga, Soryu
4x Kongo class Battlecruiser: Haruna, Hiei, Kirishima, Kongo
12x Nagara class Light Cruiser: Abukuma, Isuzu, Kinu, Kiso, Kitakami, Kuma, Nagara, Natori, Tama, Tatsuta, Tenryu, Yura
6x Sendai class Light Cruiser: Jintsu, Naka, Niyodo, Oyodo, Sendai, Yubari
8x Asagiri class Survey Cruiser: Amagiri, Asagiri, Miyuki, Murakumo, Sagiri, Shinonome, Shirakumo, Yugiri
240x Mitsubishi A1M class Fighter
24x Aichi E1A class Scout
6x Shinshu Maru class Troop Transport: Kaimei Maru, Kumagawa Maru, Kumano Maru, Shinshu Maru, Nojima Maru, Sakito Maru
6x Akatsuki Maru class Replenishment Ship: Akatsuki Maru, Kenyo Maru, Kyokuto Maru, Nichiei Maru, Tatekawa Maru, Toho Maru
6x Chitose class Jump Tender: Chitose, Chiyoda, Kamoi, Mizuho, Nisshin, Notoro
5x Asama Maru class Colony Ship
10x Kansai Maru class Freighter

Imperial Army
4x Combat Division, each with three infantry regiments and one cavalry regiment. 100,000 tons each.
5x Shore Battery, each with eight lasers and twelve railguns.
2x Engineer Regiment
2x Geosurvey Regiment
2x Xenoarchaeology Regiment













Offline Steve Walmsley (OP)

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Re: Empire of the Stars - Updates Thread
« Reply #1 on: June 25, 2024, 07:24:26 AM »
22nd January 1960
The survey cruiser Murakumo (Gathering Clouds) discovers a jump point only fourteen million kilometres from Sol.

23rd January 1960
Shinonome (Morning Twilight) discovers a jump point just inside the orbit of Jupiter

26th February 1960
The survey of all inner planets and the moons of Jupiter and Saturn is complete. There are no significant mineral deposits.

5th March 1960
Murakumo discovers two new jump points, one in the asteroid belt and the other just outside the orbit of Saturn.

8th March 1960
Murakumo enters the outermost of the four known jump points and emerges two hundred and seventy million kilometres from Barnard’s Star, a planetless red dwarf. As this is a well-known star, the existing name will be retained.

16th March 1960
Murakumo enters the second of the four known jump points and discovers Proxima, another planetless red dwarf.

19th March 1960
Shinonome enters the innermost of the four known jump point and emerges in Wolf 359, a red dwarf with a single Venusian planet and a small asteroid belt. So far, the systems discovered have been underwhelming. The system nomenclature is due to Max Wolf, a German astronomer who created a star catalogue in 1919. Many of those catalogued stars still bear his name, including Wolf 359. As this is adjacent to Sol and only one of many systems from the catalogue, it is renamed Okami, which is Japanese for Wolf.

20th March 1960
Yugiri (Evening Mist) discovers 700,000 tons of accessibility 1.0 Sorium on Neptune.

21st March 1960
Murakumo enters the third of the four known jump points. So far, all the jump points have connected to stars within a few light years of Sol. This time, she arrives a little over four hundred million kilometres from a K2-V orange star more than seventy light years from Sol. There are two terrestrial planets, both with atmospheres and liquid water. The first is 7800 km in diameter and has a nitrogen-methane atmosphere of 0.26 atm, with 9% hydro extent. The second is 16000km and has a carbon dioxide – nitrogen atmosphere of 0.69 atm, with 39% hydro extent. Both have a surface temperature of 27C. Murakumo launches a pair of Gekko (Moonlight) reconnaissance drones towards the two planets then follows in their wakes. The system is named Tsushima, the location of the great victory of Admiral Togo in 1905.

The drone approaching the first planet detects an alien ship in orbit, slightly smaller than a Nagara class light cruiser at 16,589 tons. Imperial Naval Intelligence (INI) assigns this ship the reporting name of Falcon. The aliens will be known as the Tsushima aliens until some form of contact can be established. The Imperial Navy will need more intelligence on the size and capability of the alien forces before an offensive strategy can be devised. In the meantime, the Sendai class light cruiser Jintsu (a river in Gifu and Toyama prefectures) is dispatched to the system to begin contact, while the Nagara class cruisers Abukuma (a river in the Tohoku region) and Tama (Mountain Top) picket the Sol – Tushima jump point. Murakumo continues in-system to begin her survey.



22nd March 1960
A second alien ship, designated as Red Kite, which is 7,333 tons and has military engines, joins the Falcon at the first planet.

24th March 1960
Communication attempts are underway, although Murakumo receives an unintelligible communication that appears to be some sort of demand.

3rd April 1960
The geological survey of Tsushima I reveals thirty million tons of accessibility 0.8 Duranium. This could be extremely valuable to the long-term prosperity of the Empire.

Tsushima I Survey Report
Duranium:   30,420,000   0.80
Corundium:   4,435,236   0.10

6th April 1960
A Kansai Maru class freighter delivers a deep space tracking station to Tsushima II. This planet was chosen as the location because it is mountainous and therefore easier to defend. The cruiser Jintsu has made minimal progress in translation attempts and the aliens seem to be increasingly agitated. As Murakumo is surveying the second planet, Jintsu has moved there to cover her. Plans are laid for a diplomatic ship to handle relations with the aliens, but it will be months before it can be built.

16th April 1960
Two shore batteries and the 10th Infantry regiment are delivered to Tsushima II.

21st April 1960
The Red Kite returns and along with the Falcon has moved into orbit of the small Imperial outpost on Tsushima II. More unintelligible communications are received.

26th April 1960
Murakumo completes the survey of Tsushima II. Her sister ship Amagiri (Mist in the Sky) arrives to assist with the ongoing survey of the system.

Tsushima II Survey Report
Duranium:   13,107,200   0.70
Neutronium:   12,960,000   0.10
Corbomite:   54,169,600   0.10
Tritanium:   3,097,600   0.10
Boronide:   28,729,600   0.10
Uridium:   44,089,600   0.10
Corundium:   22,278,400   0.10

10th May 1960
Four freighters and two colony ships travel into Tsushima to establish a small colony of 200,000 on Tsushima II. Two more shore batteries are delivered.

18th May 1960
The Akamatsu Carrier Corporation launches its first freighter

21st May 1960
The rest of the 4th Division is transported to Tsushima II. Over ten thousand infantry and two hundred tanks are now on the  surface of the planet to support the shore batteries. Jintsu remains in orbit.

5th July 1960
The unintelligible messages every few days cease and the Falcon leaves orbit, disappearing into the outer system. Communication attempts have made some progress, but full comms have not been established.

21st July 1960
A second Falcon class ship of the Tsushima aliens appears in the inner system. Rather than move to the planet, it conducts a series of manoeuvres nearby, moving at 3677 km/s, then moves away out of sensor range.

15th August 1960
Falcon 001 returns and takes up position sixty million kilometres from the Imperial colony on Tsushima II, which has now reached 700,000.

28th August 1960
A fifth jump point is discovered in Sol by the survey ship Sagiri (Mist), close to the orbit of Neptune.

31st August 1960
Amagiri discovers a jump point in Tsushima. The light cruiser Kitakami (a river in Rikuchu province) is dispatched from Sol to investigate. She will picket the jump point while her Aichi E1A class scout conducts the transit.

1st September 1960
Full communication is finally established with the aliens. The aliens are known as the Scimitarans and their state is the Scimitar Empire. Visual contact is initiated and reveals the aliens are humanoid in shape, but vastly different to humanity. They are large and powerful, with gray, leathery skin, large recessed white eyes and bony protuberances on top and sides of their triangular shaped skulls. Despite being on board spacecraft, they wear metallic body armour. The overall impression is one of arrogant menace.



7th September 1960
Sagiri transits the recently discovered fifth jump point in Sol and arrives in the system of Groombridge 34, a red dwarf binary with eight planets, seventeen moons and an asteroid belt. Four rocky planets orbit the primary, including a  terrestrial world, slightly larger than Earth, with a breathable atmosphere of 1.3 atm. The planet is entirely covered in frozen ocean, with the few islands dominated by boreal forest. The temperature is -46C, although that is near the planet’s aphelion of 49m km. The perihelion is at 35m, which will take the temperature to the upper end of human tolerance at 33C. As the orbital period is only 83 days, the conditions on the surface will be constantly changing. The planet is tide-locked so the maximum colony cost is only 0.31, but the maximum population is around thirty million. Terraforming, once the technology is available, could help in improving that situation.

The companion star at twenty-five billion kilometres has three terrestrial planets, a gas giant and an asteroid belt. The only planet of note is the third, which has an ice sheet and a thin nitrogen-methane atmosphere, but the surface temperature is -112C. Given the potential of the system, it is assigned the new Japanese name of Osaka. As the jump point is on the edge of the system, Sagiri moves sunward so she can launch a Gekko reconnaissance drone at the near-habitable world of Osaka-A III.

12th September 1960
Kitakami arrives at the new jump point in Tsushima. She launches her Aichi E1A, which immediately transits. On arrival the scout detects a huge fleet of Scimitar ships waiting on the jump point. Within seconds, a 33,777-ton ship designated as Raptor class destroys the scout in a hail of railgun fire.

1x Sabrehawk: 68,970 tons
4x Solarhawk: 50,654 tons
1x Raptor: 33,777 tons
5x Gyrfalcon: 33,768 tons
2x Nightfalcon: 33,755 tons
4x Warbird: 16,883 tons
1x Sunhawk: 16,855 tons
1x Harrier: 16,855 tons
2x Peregrine: 16,855 tons



Imperial naval Intelligence estimates that if all the ships are military, and the commonality of tonnage around 16,850 tons and 33,750 tons suggest that could be the case, then that represents a jump point defence force with eight light cruisers and eight battlecruisers, plus five larger ships that could be some form of super-battleship. This defence force is comparable to the size of the entire Imperial Navy, excluding carriers.

The system itself is a G5-V yellow star, slightly less massive than Sol, with four planets and over sixty moons. The fourth moon of the first planet, which has a Mars-size Jungle world with a breathable atmosphere, is potentially the Scimitar home world. However the parent gas giant has a very eccentric orbit, which brings it from its current distance of one hundred and forty-six million kilometres to just sixty-one million, which will likely boil the oceans. The atmosphere already includes a significant amount of water vapour. Either the Scimitarans are extremely well-adapted to the periodically hellish conditions on their home world, or the parent gas giant has recently suffered some form of gravitational event that caused its orbit to radically shift. The second planet is a superjovian with twelve times the mass of Jupiter and just moving away from a close pass, so that could be a contributing factor.

In any event, the treacherous attack without warning and the close proximity of the Scimitar Empire makes this a grave situation for the Empire of Japan and for all of humanity. The powerful Scimitaran fleet cannot be allowed to enter Tsushima. On that basis, Kitakami is ordered to hold position and destroy anything transiting the jump point. The Nagara class light cruisers Tama and Abukuma, currently at the Sol – Tsushima jump point, are ordered to immediately transit and join her. At the same location is the Sendai class light cruiser Naka (a river in Tochigi and Ibaraki prefectures), which remains in place to provide jump-capability and to ensure no Scimitaran ships can enter the Sol system. Finally, the Kongo class battlecruisers Kirishima (a volcano on Kyushu) and Haruna (dormant stratovolcano in Gunma Prefecture) and the light cruiser Kuma (a river in Higo province) depart Earth orbit with orders to join the force being assembled on the Tsushima – Scimitar jump point.

Jintsu, still in orbit of Tsushima II, is ordered to pursue and destroy the Falcon class ship still holding position sixty-two million kilometres from the planet. Her speed of 4000 km/s gives her an advantage over the Falcon’s apparent maximum speed of 3677 km/s. Jintsu takes fifty-four hours to run down the fleeing Falcon. Once within weapon range, she discovers the alien ship has a jammer that affects her fire control systems. While accuracy is affected, the alien ship appears to be unarmed so the end result is not in doubt. Several volleys of laser fire are sufficient to penetrate the target’s weak armour, slow the Falcon and then destroy it. INI classifies the Falcon as a scout.

19th September 1960
Kitakami detects the second Falcon approaching the Tsushima – Scimitar jump point. She opens fire when the ship is within range and inflicts several penetrating hits. The ship continues its approach, trying to escape to its home system before Kitakami can inflict enough damage. The Japanese light cruiser sets a reciprocal course and a second volley at 15,000 km is enough to destroy the Scimitaran scout.

20th September 1960
A third, previously unknown, Falcon class scout approaches the Scimitar jump point. This time the alien ship retreats after being hit. Kitakami seeks permission to pursue, which is given, then chases down the scout, scoring numerous hits. After one devastating volley, with eight penetrating strength-4 hits, the Falcon is left dead in space. Instead of destroying the ship, Kitakami moves alongside the hull and begins a boarding attempt with the forty-two members of her naval landing force. After eight minutes of intense combat, the alien ship is secured without any Japanese losses.

The Falcon is more advanced in some areas than Japanese technology, such as her first generation sensor, missile and fire control jammers, but behind in others, such as nuclear pulse engines, which are a generation behind the Imperial Navy’s gas core drives. Forty-six percent of its mass is engines, which means that Scimitaran warships of similar technology, with presumably less engine mass than the scout, should be significantly slower than their Japanese equivalents. Unfortunately, until the Imperial Navy develops tractor beams, the captured scout will remain where it is. It has insufficient damage control capability to repair its own engines.

21st September 1960
A new Falcon class scout transits into Tsushima from Scimitar, appearing 38,000 km from Kitakami, then runs for the inner system. Kitakami gives chase and destroys the ship i[n two volleys.

22nd September 1960
A Gekko drone from Sagiri arrives at the near-habitable planet in the Osaka system, detecting a population of a new alien race, with a sensor signature approximately 1% that of Earth. The news causes great concern within Combined Fleet headquarters. Two alien races had now been detected adjacent to Sol. There was no sign of any shipping, so Sagiri was given the go-ahead to continue with her survey. The Nagara class light cruiser Kinu (a river flowing across the Kanto plain) was ordered to the Osaka system to provide cover, while the Sendai class light cruiser Niyodo (a major river on Shikoku) was ordered to picket the Sol – Osaka jump point. It was quickly becoming apparent that the Imperial Navy would need some form of long-term picket vessel to cover choke points instead of dispatching light cruisers to perform the role.

9th October 1960
The first Hosho class Diplomatic Ship is launched and ordered to Osaka to attempt communication with the alien race. There has been no contact from the aliens, unintelligible or otherwise, even though Kinu is in orbit.

2nd November 1960
Sagiri completes her survey of Osaka III and finds large, accessible deposits of all eleven Trans-Newtonian minerals; an extremely valuable discovery. Daigensui-Kaigun-Taisho Takagi Razan, commander-in-chief of the Imperial Japanese Navy, issues an order for a colony to be established on the planet, testing the reaction of the silent aliens already in place.

Osaka-A III Survey Report
Duranium:   849,600   0.90
Neutronium:   257,400   0.60
Corbomite:   210,300   0.50
Tritanium:   167,400   0.70
Boronide:   458,100   0.60
Mercassium:   216,300   0.80
Vendarite:   591,000   0.70
Sorium:   513,900   0.70
Uridium:   397,800   0.50
Corundium:   181,800   0.90
Gallicite:   163,800   0.40
 
15th December 1960
Asagiri (Morning Mist) detects a sixth jump point in Sol, just inside the orbit of Neptune. She moves to investigate and discovers Alpha Centauri, a binary system with a G2-V primary, similar to Sol, and an orange K2-V companion. The primary has five rocky planets, including one with a small ice sheet and a thin oxygen-nitrogen atmosphere. A single terrestrial world orbits the companion. She moves closer and launches a drone at the planet with an atmosphere and does not detect any sign of an alien presence.

12th February 1961
Two new troop transports, Sanka Maru and Tamahoko Maru, are constructed in Earth orbit.

23rd February 1961
Amagiri transits a newly discovered jump point in Tsushima to find Kagoshima, a large system with an F6-IV sub-giant primary and seven planets. The third planet, orbiting half a billion kilometres from the star, has a breathable atmosphere, a minimal amount of surface water and a temperature of 42C. The dominant terrain is mountainous desert. The entry jump point is within the inner system, at roughly the same distance as Kagoshima III, so the survey vessel immediately launches a Gekko drone.

On approach to the planet, the Gekko detects yet another alien race, this time in the form of a fleet of twenty ships, ranging in size from 9600 tons to 29,000 tons and massing approximately 350,000 tons in total. There is no sign of a population. This is the third alien race within two jumps of Sol. One point three million kilometres from the planet, the drone is destroyed by a missile, which suggests these new aliens are hostile. The light cruiser Yura (a river in Tango province) is dispatched from Earth to picket the Tsushima – Kagoshima jump point and a new diplomatic ship is laid down. As the system is large, Amagiri is ordered to continue her survey but remain several hundred million kilometres away from Kagoshima III.





The Imperial Navy is being stretched in many different directions and lacks the number of ships needed to maintain even its current deployments, when the need for overhauls and protecting Earth in taken into account. A major shipbuilding program is required.

8th March 1961
Shinonome completes its survey of Okami and enters the first of two new jump points and discovers Lalande 21185, a red dwarf with four unremarkable planets. The celestial coordinates of Lalande 21185 were first published in 1801 by French astronomer Jérôme Lalande of the Paris Observatory in the star catalogue Histoire céleste française. As this name has been in place for a hundred and sixty years and very few stars still bear his name, the system will be named Lalande and all future stars with the same nomenclature will be renamed.

16th April 1961
There is still no attempt at communication from the alien population on Osaka III and no sign of any alien ships, even though a small Japanese colony has been established on the planet. Imperial Naval Intelligence has theorised the aliens are primitive and do not have the ability to detect the Imperial ships, communicate or realistically defend themselves. The planet is extremely valuable, so that theory is enough to dictate the Empire’s course of action. The entire 2nd Division is on Osaka III and awaiting orders. Daigensui-Kaigun-Taisho Takagi gives the order to invade the alien colony.

There is no resistance and the aliens quickly surrender to the advancing Japanese forces. The population is approximately thirty-three million, comprised of amphibious creatures with long necks and large black eyes. While full commination has yet to be established, Imperial linguists have determined the alien species refer to themselves as the Rasheed. There is no industry, supporting the theory that they are at a pre-industrial stage of development. Even though the aliens are weak and dishonourable, they can still serve as labour for the Empire of Japan in its efforts to exploit their home world’s resources. One of the three alien threats has been removed, but the Scimitarans and the new Kagoshima aliens are likely to prove much harder to subdue.

31st May 1961
Murakumo, transferred from Tsushima after the completion of the survey in that system, enters the second unexplored jump point in Okami and emerges in a brown dwarf system. The system is named Waisei Ichi, which roughly translates into English as Dwarf One.

18th August 1961
Construction factories, engineers and minerals have been delivered to Osaka III, enabling the Empire to begin the creation of forced labour camps for the Rasheed.

30th September 1961
Shokaku (Crane Flying in Heaven), the fifth Akagi class carrier is launched from the Yokosuka Dockyards. Her strikegroup of sixty Mitsubishi A1M fighters is still under construction.

21st January 1962
Two large Scimitaran ships transit into Tsushima; a 68,970-ton Sabrehawk, which has commercial engines and a 33,768-ton Gyrfalcon with military engines. This is the first Scimitaran activity since the last of their four Falcon class scouts was destroyed in Tsushima in September 1960. The aliens in the adjacent Kagoshima system remain quiescent and have shown no interest in entering Tsushima. The Imperial Navy maintains a strong jump point picket of two battlecruisers and three Nagara class cruisers, although the original picket ships have departed for overhauls in Sol and new ships have taken their places.

Scimitar JP Picket Squadron
Kongo class Battlecruiser: Hiei, Kongo
Nagara class Light Cruiser: Nagara, Natori, Tenryū
5x Aichi E1A class Scout:



Kaigun-Taisa Nobunaga Suzu, captain of the battlecruiser Kongo (a mountain in Osaka Prefecture) and senior officer present, orders all his ships to fire on the Gyrfalcon. The battlecruiser Hiei (a mountain near Kyoto) and the light cruiser Nagara (one of the Three Rivers of the Nōbi Plain) open fire immediately, inflicting massive damage. The Gyrfalcon suffers thirty-five strength-10 laser hits and over a hundred railgun hits. Forty hit penetrate her armour. To the great surprise of the Imperial Navy crews, the Gyrfalcon survives, although it is dead in space. Kaigun-Taisa Nobunaga orders his ships to cease fire and instructs Nagara and Natori (a river in Miyagi prefecture) to begin boarding operations. He also orders the light cruiser Tenryu (Heaven’s  Dragon – also a river) to disable the commercial engined vessel and board it.

The marines from Nagara and Natori find the crew of the badly damaged Gyrfalcon to be difficult opponents. Even though only armed with light personal weapons, the Scimitarans still kill twelve of the boarders before finally being overwhelmed. The Gyrfalcon is armed with sixty-six missile launchers that fire every ten seconds.  While it appears to be designed to engage hostile missiles, it would prove a fearsome opponent in a close-range battle. Only the effects of jump shock and the fast reactions of the Japanese crews prevented any damage.

Gyrfalcon class Escort Cruiser      33,769 tons       694 Crew       3,781.7 BP       TCS 675    TH 1,984    EM 0
2937 km/s      Armour 6-93       Shields 0-0       HTK 201      Sensors 0/0/0/0      DCR 16-4      PPV 66
Maint Life 0.90 Years     MSP 1,119    AFR 570%    IFR 7.9%    1YR 1,240    5YR 18,605    Max Repair 710.2 MSP
Magazine 2,167 / 172   
Kaigun-Taisa    Control Rating 2   BRG   CIC   
Intended Deployment Time: 12 months    Morale Check Required   

Nuclear Pulse Engine  EP248 (8)    Power 1984    Fuel Use 45.44%    Signature 248    Explosion 10%
Fuel Capacity 1,300,000 Litres    Range 15.2 billion km (60 days at full power)

Size 43 Decoy Launcher (4)     Decoy Size: 43    Hangar Reload 327 minutes    MF Reload 54 hours
Size 1 Missile Launcher (66)     Missile Size: 1    Rate of Fire 10
Missile Fire Control FC13-R1 (14)     Range 13.2m km    Resolution 1   ECCM-1

Active Search Sensor AS11-R1 (1)     GPS 69     Range 11.4m km    MCR 1m km    Resolution 1
Electronic Warfare Jammers:   Sensor 1    Fire Control 1    Missile 1   

Fortunately, the Gyrfalcon can repair its own engines. Otherwise it would have to remain in place until tractor beams can be developed and deployed and they are at least three years away from deployment at the current rate of research. The Falcon captured eighteen months earlier is only being held together due to regular resupply and will fall apart soon. The technology in the Gyrfalcon, especially its missile launchers, is far more valuable and it must remain intact until it can be taken apart at Earth.

Tenryu slows the Sabrehawk to 463 km/s before launching her marines. Three are lost in the boarding attempt and a further six in the battle with the Scimitaran crew. The commercial-engined vessel is a construction ship, designed to stabilise jump points and allow non-jump-capable ships to transit. Similar technology is years away from development by the Empire of Japan, so if the ship could be repaired and put into service, it would be of great value. Due to the foresight of Tenryu’s captain, Kaigun-Chūsa Haruguchi Maya, one of the first female starship commanders, it still has engine power remaining so can be moved to Earth under its own power.

Sabrehawk class Construction Ship      68,971 tons       260 Crew       1,573.4 BP       TCS 1,379    TH 1,024    EM 0
742 km/s      Armour 1-149       Shields 0-0       HTK 72      Sensors 0/0/0/0      DCR 1-0      PPV 0
MSP 14    Max Repair 1,000 MSP
Kaigun-Shōsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   
Jump Point Stabilisation: 180 days

Commercial Nuclear Pulse Engine  EP128.0 (8)    Power 1024    Fuel Use 4.05%    Signature 128    Explosion 4%
Fuel Capacity 200,000 Litres    Range 12.9 billion km (201 days at full power)

CIWS-120 (2x4)    Range 1000 km     TS: 12,000 km/s     ROF 5       

5th April 1962
Two new Asagiri class survey cruisers, Fubuki (Snowstorm) and Shirayuki (White Snow), are completed by the Sasebo Naval Dockyards.

26th April 1962
Three new Nagara class light cruisers, Kashima (a shrine in Hitachi province), Kashiwara (a city in Osaka prefecture) and Katori (a shrine founded by Jimmu Tenno, the divine first emperor), are completed by the Kure Naval Dockyards. This addition to the cruiser fleet will ease pressure on the Imperial Navy, as its tries to address its many commitments.

9th May 1962
Sagiri completes the survey of Osaka, finding two new jump points. She transits both, discovering Shōbara, a planetless M6-V red dwarf, and Tosa, a planetless M8-V red dwarf. She begins a survey of the latter.

13th June 1962
Yamashiro (a province that translates as Mountain Castle), the fifth Kongo class battlecruiser, is launched by the Maizuru Naval Dockyards.

27th June 1962
The survey of Proxima, located beyond Sol’s second jump point, is completed. The system has a total of six jump points. The survey cruisers Fubuki and Miyuki (Deep Snow), probe the five outward jump points, which lead to Epsilon Indi, Koga, Minato, Sirius and Aomori. There are four planets and fourteen moons in Sirius, all of which are barren and extremely hot, plus three planets in total in the other four systems, none of which are of any interest.

6th September 1962
A geological survey of Sirius I reveals substantial, accessible mineral deposits. Sirius I is a barren, tide-locked dwarf planet, orbiting less than seventy million kilometres from an A0-V primary with eighty times the luminosity of Sol. The surface temperature is 955C and the colony cost is 7.64. The Empire of Japan is close to developing terraforming technology and this planet seems an obvious candidate.

Sirius-A I Survey Report
Duranium:   691,488   0.80
Neutronium:   1,254,400   0.80
Corbomite:   112,896   0.70
Tritanium:   1,132,096   0.40
Mercassium:   432,964   1.00
Vendarite:   828,100   0.70
Sorium:   1,254,400   0.90
Uridium:   254,016   0.80
Corundium:   15,876   0.90
Gallicite:   802,816   0.30

27th June 1963
Zuikaku (Fortunate Crane), the sixth Akagi class carrier is launched from the Yokosuka Dockyards. Her strikegroup comprises sixty Mitsubishi A1M2 fighters, a modification of the original A1M1 with greater range, plus two Aichi E1A scouts.

13th September 1963
Two Scimitaran ships of a new 7871-ton type, designated as Star Eagle, transit into Tsushima. The picket squadron is comprised of the same ships as the last transit eighteen months ago, except for the light cruiser Yura replacing the light cruiser Tenryu. Nagara and Natori open fire immediately, each targeting a different ships. The Star Eagles are each destroyed by twelve laser hits. Meanwhile in Kagoshima, the large alien fleet from the other known alien race is maintaining position and refusing to communicate.

Scimitar JP Picket Squadron
Kongo class Battlecruiser: Hiei, Kongo
Nagara class Light Cruiser: Nagara, Natori, Yura
5x Aichi E1A class Scout:

23rd October 1963
Known space has grown to thirty-three systems, eighteen of which lack any planets and two are occupied by hostile aliens. The lack of habitable worlds is disappointing, although the conquest of Osaka III has offset that considerably. The most recently discovered system is a black hole, three transits from Earth via Barnard’s Star and Nagasaki, with a mass eighty times that of Sol.


« Last Edit: June 25, 2024, 07:27:11 AM by Steve Walmsley »
 

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Re: Empire of the Stars - Updates Thread
« Reply #2 on: June 25, 2024, 07:55:45 AM »
23rd December 1963
The Sabrehawk captured from the Scimitar Empire stabilises both sides of the Sol – Tsushima jump point. The Empire has now developed stabilisation technology, but is still in the process of retooling a shipyard before it can lay down the first Japanese-built ship.

18th April 1964
The first Kawanishi H1K 'Saiun' (Iridescent Cloud) class Long Range Patrol craft is launched from the recently-constructed Kawanishi Naval Shipyard. The H1K will fill a variety of roles, including long-range reconnaissance, jump point picket and commerce raider, and can remain on deployment for up to three years. Its first task will be to deploy the newly developed Zuiun (Auspicious Cloud) Sensor Buoy at all of Sol’s jump points.

Kawanishi H1K 'Saiun' class Long Range Patrol      1,000 tons       19 Crew       107.8 BP       TCS 20    TH 60    EM 0
3000 km/s    JR 3-50      Armour 1-8       Shields 0-0       HTK 8      Sensors 1/1/0/0      DCR 0-0      PPV 4.58
Maint Life 4.76 Years     MSP 41    AFR 32%    IFR 0.4%    1YR 3    5YR 45    Max Repair 30 MSP
Magazine 24 / 0   
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 36 months    Morale Check Required   

Komatsu KSJ-100 Jump Drive     Max Ship Size 1000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-60 Gas Core Drive (1)    Power 60    Fuel Use 90.37%    Signature 60    Explosion 10%
Fuel Capacity 129,700 Litres    Range 25.8 billion km (99 days at full power)

MK I Light Cannon (1)    Range 10,000km     TS: 4,000 km/s     Power 0.75-0.75     ROF 5       
Type 23 Go-34A Light Cannon Fire Control (1)     Max Range: 32,000 km   TS: 3,000 km/s    ECCM-1   
MK I Light Cannon Power Plant (1)     Total Power Output 0.8    Exp 10%

Type 23 Fixed Missile Launcher (2)     Missile Size: 12    Hangar Reload 173 minutes    MF Reload 28 hours
Type 23 Go-44 Missile Fire Control (1)     Range 21.1m km    Resolution 120   ECCM-1
Zuiun Sensor Buoy (2)    Speed: 0 km/s    End: 0m     Range: 0m km    WH: 0    Size: 12    TH: 0/0/0

Type 23 Go-14A Patrol Sensor (1)     GPS 1008     Range 19.8m km    Resolution 120
Type 23 Go-54A Passive Sensor (1)     Sensitivity 1.5     Detect Sig Strength 1000:  9.7m km
Type 23 Go-64A Passive Sensor (1)     Sensitivity 1.8     Detect Sig Strength 1000:  10.6m km

23rd April 1964
Three new ships are completed:  the survey cruisers Oboro (Haziness Diffusing the Moonlight) and Usugumo (Thin Misty Clouds) and the light cruiser Sakawa (a river in Sagami province).

11th June 1964
Two Sendai class light cruisers, Noshiro (Large Passage Through a Plain - a river in Ugo Province) and Yahagi (arrow-maker –a river in Mikawa province), are launched from the Kure Naval Dockyards.

23rd September 1964
Two more Star Eagles transit into Tsushima from Scimitar. They are quickly destroyed by the battlecruiser Haruna and the light cruiser Kinu.

9th December 1964
The survey of the Mitaka system, three jumps from Sol via Proxima and Epsilon Indi, reveals a total of eight jump points, a record for a single system. Known space is now forty systems.

16th December 1964
Fuso (Land of Divine Mulberry Trees), the sixth and final Kongo class battlecruiser is launched.

4th February 1965
The survey cruiser Sagiri discovers two extremely valuable bodies in the Takamatsu system, six transits and eleven billion kilometres from Sol, using the shortest route. Takamatsu II is a barren dwarf planet two thousand kilometres in diameter with a stable orbit and a surface temperature of 43C. The sixth moon of Takamatsu III is even smaller, at eighteen hundred kilometres. It is also barren and much colder, ranging from -165C to -180C due to the orbit of its parent gas giant. Even so, both worlds will be relatively easy to terraform, once that capability is available. The first Amateratsu class terraforming station has already been constructed, but remains in Earth orbit until it is joined by the first Tug.

Takamatsu II Survey Report
Duranium:   1,548,800   0.80
Neutronium:   302,500   0.90
Tritanium:   313,600   0.80
Mercassium:   250,000   0.70
Vendarite:   476,100   0.60
Uridium:   220,900   0.60
Gallicite:   902,500   0.90

Takamatsu III - Moon 6 Survey Report
Duranium:   793,800   0.80
Tritanium:   2,025   0.80
Boronide:   385,641   0.90
Vendarite:   571,536   0.60
Uridium:   81   0.90
Corundium:   480,249   0.80
Gallicite:   492,804   0.60





14th February 1965
The seventh Akagi class carrier, Ryujo (Dragon and Phoenix), is launched from the Yokosuka Dockyards. The strikegroup of sixty Mitsubishi A1M2 'Raiden' class fighters and two Aichi E1A class scouts has already been completed by the Empires fighter factories.

4th April 1965
The Nagara class light cruiser Agano (a river mouth at Matsusasaki town) joins the Imperial Navy.

10th April 1965
A research team led by Nagata Masamori develops the technology for Ion Engines. This will initiate a new round of engine designs and subsequent refits for the Imperial Navy.

18th May 1965
The eighth Akagi class carrier, Zuiho (Auspicious Phoenix), is launched from the Yokosuka Dockyards. There is no strikegroup available as fighter construction was halted in January 1965 in anticipation of Ion technology being available.

23rd May 1965
An Eikai Maru class tug, the first of two planned vessels in her class, is constructed in Earth orbit. The Eikai Maru is a temporary solution while the first of the 140,000-ton Shokai Maru class tugs is under construction. Four fuel harvesting stations and two terraforming stations are in Earth orbit awaiting deployment.

Eikai Maru class Tug      51,966 tons       410 Crew       1,184 BP       TCS 1,039    TH 3,840    EM 0
3694 km/s      Armour 1-124       Shields 0-0       HTK 135      Sensors 5/6/0/0      DCR 1-0      PPV 0
MSP 14    Max Repair 100 MSP
Tractor Beam     
Kaigun-Shōsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   

Koga-Murakama KC-240 Gas-Core Drive  (16)    Power 3840    Fuel Use 2.89%    Signature 240    Explosion 4%
Fuel Capacity 2,000,000 Litres    Range 239.5 billion km (750 days at full power)

Type 12 Go-13A Navigation Sensor (1)     GPS 1440     Range 23.6m km    Resolution 120
Type 8 Go-53A Passive Sensor (1)     Sensitivity 5     Detect Sig Strength 1000:  17.7m km
Type 10 Go-63A Passive Sensor (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km

28th August 1965
Koshu Maru and Amakusa Maru, the first Japanese-built stabilisation ships, are completed by the Otsu Marine Industries orbital shipyard. They join the captured Scimitaran stabilisation ship, which has already stabilised both sides of the jump points from Sol to Proxima and Osaka, in creating a stable pathway from Sol to Takamatsu.

6th September 1965
The survey cruiser Shirakumo (White Clouds) explores a jump point in Mitaka, three jumps from Sol via Proxima and Epsilon Indi, and finds Kochi, a red dwarf system with three terrestrial planets, four moons and a handful of asteroids. The second planet has a Nitrogen – Methane atmosphere and a small amount of surface ice, so the cruiser launches a Gekko reconnaissance drone to check for signs of life. The drone detects eight ships of the Kagoshima aliens; a 19,426-ton Terror, a 19,228-ton Devastator, two 9622-ton Avengers and four 9620-ton ships of a new type, designated as Raptor class. As the drone moves closer it detects a tiny strength-65 thermal signature, possibly indicating a few installations on the surface, but there is no sign of any settlement. Moments later the Gekko is intercepted and destroyed by an alien missile.



Until now, the Kagoshima aliens have not been detected anywhere apart from in orbit of Kagoshima III, a planet without any obvious population. This new sighting is also in orbit of a planet without a population. For some reasons, these aliens are guarding uninhabited worlds. There is no known path between Kagoshima and Kochi that does not pass through Sol. Kagoshima has been surveyed, with a single outward jump point leading to Sapporo, a system with a yellow-white F7-V primary, seven planets and almost five hundred asteroids. So far a survey of that system has not revealed any alien presence, so the Kagoshima aliens are not picketing the adjacent systems to their main fleet. Their motivations remain a mystery.

However, this new fleet in Kochi is much smaller than in Kagoshima, so it gives the Imperial Japanese Navy an opportunity to test their capabilities in battle. A fleet is assembled in Earth orbit comprising four Akagi class carriers, four Kongo class battlecruisers and eight light cruisers. The powerful fleet is given the designation of Kidō Butai, or Mobile Strike Force.  In the absence of the Kidō Butai, Earth is covered by four carriers, one of which lacks fighters, and thirteen light cruisers. Two battlecruisers and two light cruisers are deployed at the Tsushima – Scimitar jump point and two more light cruisers are in orbit of Osaka III, home world of the Rasheed.

Kidō Butai
Akagi class Carrier: Akagi, Hiryu, Kaga, Soryu
Kongo class Battlecruiser: Haruna, Hiei, Kirishima, Kongo
Nagara class Light Cruiser: Abukuma, Isuzu, Kinu, Kuma, Tama, Tatsuta, Tenryū, Yura
240x Mitsubishi A1M 'Raiden'
20x Aichi E1A

22nd September 1965
The Kidō Butai arrives in Kochi and moves toward the alien fleet in orbit of the second planet. In total, the fleet has one hundred and seventy-six railguns available for point defence, along with the cannon of the fighters if that becomes necessary. For offence, and emergency defence, the Kido Butai also has one hundred and ninety-two 20cm lasers. The Kido Butai is forty million kilometres from the planet when it comes under missile attack, with ten salvos of three missiles each travelling at 44,163 km/s



Unfortunately, the alien missiles are laser torpedoes, which completely negates the Kidō Butai’s railgun point defence. Laser torpedoes have been discussed in a theoretical sense by Japanese scientists, but the technology has not been developed by the Empire. The alien design detonates its warhead over sixty thousand kilometres from the target, generating a laser that inflicts a strength-3 hit from that range. The fleet’s own laser weapons are able to intercept, but with reduced accuracy compared to a point-blank defence. Thirteen missiles are destroyed. The other seventeen all strike the battlecruiser Kongo. The laser hits penetrate through almost forty percent of her armour belt, with two in the same location penetrating to seventy-five percent.

The captain of the Kongo, Kaigun-Taisa Nobunaga Suzu, is also the senior office in the Kido Butai. He orders the four carriers to launch their two hundred and forty Mitsubishi A1M 'Raiden' fighters, collectively known as the 1st Air Fleet for historical reasons, and station them sixty thousand kilometres in front of the fleet, where they can help to intercept any follow-up attack. An hour passes, and then a second, as the Kido Butai moves within ten million kilometres of Kochi II. The missile strike appears to have been a one-off, perhaps from fixed launchers that will take hours to reload. Even so, Kaigun-Taisa Nobunaga decides to retain the fighter screen as the Kido Butai continues its approach.

When the planet comes within range of the Japanese high-resolution missile detection sensors, they detect ten 1000-ton craft, designated as Ghost class, that are invisible to long-range sensors, except at close range. It seems likely they were the origin of the laser torpedoes. They also detect a ground forces signature of 20,000 tons. Whatever the Kagoshima aliens are protecting, they are serious about it.

At one point three million kilometres from Kochi II, a missile launch is detected. These missiles are smaller than in the previous attack, with only one-sixth of the thermal signature of the earlier missile wave, but much faster at 77,200 km/s and in greater numbers, with ninety-one inbounds detected. Kaigun-Taisa Nobunaga orders the fighters to fall back to close protection of the fleet, believing the new missiles are too small to be laser torpedoes. Ten seconds after the first launch, an identical second wave is launched. The Imperial Japanese Navy is about to face its first real test in combat.



The A1M ‘Raiden’ fighters move into close defensive formation with the Kido Butai and destroy thirty-two of the inbound missiles. Twenty-four more are killed by the fleet’s railguns. The other thirty-five strike the battlecruiser Kongo with strength-1 warheads. One missile hits in the same location as the double laser hit over two hours earlier and almost penetrates the armour. Kaigun-Taisa Nobunaga authorises the use of the Kido Butai’s 20cm lasers, despite concern over the effect of the wear and tear of continuous fire on the fleet’s maintenance supplies. Even so, their rate of fire will mean they can only engage every other salvo.

The second wave inflicts thirty-eight strength-1 hits on the light cruiser Kinu. The 20cm lasers add only three missile kills, despite one hundred and ninety-two shots. The problem for the Kido Butai is that with so many missiles inbound, the number of shots that can be assigned to each target is limited. Often multiple shots hit the same missile, while other missiles escape unscathed. Adding the 20cm lasers is mainly increasing  overkill.

With a steady stream of missiles approaching and more than a third of each wave penetrating the defences of the Kido Butai, Kaigun-Taisa Nobunaga realises his carriers, with their thin armour, are extremely vulnerable. Despite the risk in sending them without escort, he orders all four to retreat toward the jump point, leaving the fighters with the rest of the fleet.

Thirty-one missiles from the third wave strike Kongo, with two penetrating the weak spot in her armour. One hit takes out her primary sensor and the other strikes crew quarters. Eighteen are killed; the first Japanese casualties since the Empire went into space. The Kido Butai is almost five minutes from the planet, with new waves arriving every ten seconds. Kaigun-Taisa Nobunaga considers sending his fighters ahead, as they can arrive in two and a half minutes, but decides to hold his force together for now, with the exception of the retreating carriers.

Thirty-two missiles from wave four hit Kinu, further damaging her armour but not yet penetrating, and thirty-eight missiles from wave five hit Kongo, fortunately missing the hole in her armour. By this point, the two ships have each lost twenty percent of their armour volume, but the battlecruiser has more weak spots due to the earlier laser torpedo attack. The Kagoshima aliens seem to be alternating attacks between the two ships.

That pattern holds true, with Kinu under attack from the sixth and eighth waves and Kongo from the seventh and ninth. Neither suffers any internal damage, but their armour is disintegrating under the constant bombardment. The Kido Butai is nine hundred and sixty thousand kilometres from Kochi II; four minutes from orbit and three minutes from maximum weapon range. The hostile missile waves continue to arrive every ten seconds.

After the tenth wave, Kinu is down to almost fifty percent armour and after the twelfth she has six separate holes straight through her armour belt. One missile each from the eleventh and thirteenth wave penetrates Kongo’s armour. She loses her boat bay, but otherwise the damage is minimal. With the fourteenth wave already inbound, and probably targeted on Kinu, Kaigun-Taisa Nobunaga orders the light cruiser to hold formation until after that wave arrives, then Kinu and his own damaged Kongo will break formation and retreat to the jump point before suffering significant casualties.

Kaigun-Taisa Nobunaga’s intuition is proved correct. Six missiles from the fourteenth wave penetrate the light cruiser’s armour, destroying two railguns and half of the troop transport bays, killing eight crewmen and twenty marines. Kinu and the battlecruiser Kongo reverse course and prepare to ride out yet another missile wave while the rest of the Kido Butai continues toward the planet. The two ships destroy only three missiles from the fifteenth wave, with the other eighty-eight detonating on Kongo’s battered armour. She loses two railguns, one of her four engines and thirty-two crewmen. As Kongo can now only make 3000 km/s, Kaigun-Taisa Nobunaga orders Kinu to move ahead and both ships continue to retreat at their best speed.

Nobunaga hoped that by pulling the damaged ships back from the main fleet, and the protection afforded by massed point defence, that the aliens would change targets to a closer, undamaged target. That does not prove true for the sixteenth wave, which passes the main body of the Kido Butai and attacks Kinu once again. By this point, the lasers of the main body have recharged and manage to destroy ten of the attacking missiles from a hundred and fifty thousand kilometres. Kongo destroys one with her own lasers and Kinu’s railguns shoot down two more. Seventy-eight survive to reach the light cruiser.

Two of Kinu’s 20cm lasers are destroyed, along with a railgun, her boat bay, one of her two reactors and two-thirds of her fuel storage. The light cruiser’s crew quarters and engineering decks are also hit and seventy-five percent of her armour has been blasted away from the hull. Thirty-one crewmen are killed. Fortunately, both her engines remain intact, but her captain, Kaigun-Chusa Ishimura Kuri, is becoming concerned about his battered ship’s ability to withstand another attack.

Wave seventeen passes the fleet and heads for Kongo. Kaigun-Taisa Nobunaga considers ordering the 1st Air Fleet to leave the main body and provide cover, but it will take some time to arrive and even more time to move back if the aliens change their targeting. For the moment, he leaves it in place. Kongo is hit by eighty-seven missiles and loses several systems, including another engine. Her speed is down to 2000 km/s. In retrospect, keeping the ships with the rest of the fleet would have been the wiser choice, but Nobunaga believed the aliens would react to closer and larger threats. Their single-minded devotion to killing the two retreating ships was unexpected.

Wave eighteen breaks the pattern. Instead of the expected attack on Kinu, the missiles target Kongo with devastating effectiveness. Over twenty missiles penetrate her armour, destroying six of her lasers, two railguns and both of her remaining engines. The crippled battlecruiser is helpless and completely open to attack. Even if the 1st Air Fleet was directed to provide cover, it would take over thirty seconds to arrive. Kaigun-Taisa Nobunaga cannot sacrifice the protection of the fleet, so he orders the Kido Butai to press on and avenge his ship. Moments later another eighty-six missile slam into Kongo, followed ten seconds later by eighty-seven more. The gallant battlecruiser still manages to shoot down several of the inbounds, but the end is near.



Somehow, Kongo survives the twenty-first missile wave. Most of her weapons are gone and almost five hundred of her crew are dead, but she still has her missile detection sensor and five railguns, enabling her to shoot down three missiles. That defiant resistance ends with the loss of all four or her reactors, leaving her no way to recharge her weapons. All ninety-one missiles from the next wave strike the crippled battlecruiser and she explodes. One hundred and eighty-nine crew escape to the life pods, leaving over a thousand bodies in the wreck. Kaigun-Taisa Nobunaga chooses to perish with his ship, refusing to escape in a life pod.

Command of the Kido Butai passes to Kaigun-Taisa Akita Toshiro, commander of the battlecruiser Kirishima. His remaining force of three battlecruisers and seven light cruisers, escorted by the 1st Air Fleet, is 442,000 km from Kochi II. Another wave of ninety-one missiles launches from the alien fleet. As the crews prepare to see which ship will be the next target, the missiles flash past the Kido Butai and head for the damaged light cruiser Kinu, which is 1,140,000 km from the planet and heading for the jump point.

The twenty-fourth wave is targeted on the light cruiser Yura, within the main body, and arrives while the missiles of the previous wave are closing on Kinu. With most of the fleet’s point defence still intact, sixty-three missiles are hit and destroyed. The remaining twenty-eight inflict armour damage on Yura. Moments later, Kinu is struck by eighty-eight missiles, more than half of which penetrate the remnants of her armour belt. The damage is catastrophic, with more than a hundred of her crew killed in that single attack. One engine survives and she continues on course at 2000 km/s.

The aliens seem to lose interest in Kinu, or she is out of range, as waves twenty-five and twenty-six are both directed against the battlecruiser Hiei, without achieving even a fifty percent penetration of her armour. The Kido Butai is 280,000 km from Kochi II and about to enter weapon range. Kaigun-Taisa Akita orders all ships to reserve their lasers for offensive operations only.

The twenty-seventh missile wave also targets Hiei, scoring thirty-six hits. Simultaneously, the Kido Butai opens fire on the two largest alien ships: the 19,426-ton Terror and the 19,228-ton Devastator. The laser fire is at close to maximum range and significantly degraded by the aliens’ electronic warfare systems. Only eight strength-1 hits are registered.

When the Kido Butai reaches 220,000 km from the planet, the battle takes a very unsettling turn. The enemy possesses a devastating energy weapon, capable of inflicting strength-18 hits at long range that penetrate armour far more effectively than lasers. Even against undamaged battlecruiser armour, more than half of the weapon strength is directed against internal systems. The four Raptor class ships possess three weapons each and a further sixteen are located on the planet’s surface, for a total of twenty-eight. Hiei is hit twice, losing two of her four engines, a laser and two railguns. The previously undamaged Kirishima is struck nine times and suffers appalling damage. All four engines and the jump drive are destroyed, along with sixteen lasers and eight railguns. She is stationary and almost out of the fight.

The stunned Japanese tactical officers quickly identify the alien weapon as a particle lance, a technology that would likely takes decades for the Empire to develop from a standing start. In combination with the alien electronic warfare capability, this demonstrates just how out-matched the Imperial Navy is in terms of technology. With Kirishima disabled and Hiei badly damaged, any retreat under constant missile fire would likely cost the Empire those two ships. Besides, Kaigun-Taisa Akita Toshiro is not a commander who retreats. Informed by his tactical officer that the particle lance is likely to have constant damage across its range and a long recharge period, he orders every ship, including the fighters, to charge the enemy at their best speed. The fighters are ordered to target the Devastator, which has been identified as the source of the missiles, then the Raptors, while the ships target the surface-based weapons. The capabilities of the Terror and the two Avengers remain unknown.

Hiei continues to be the target of the missile waves and due to its separation from the rest of the Kido Butai due to engine damage, it cannot defend itself effectively. Eighty missiles hit, with two penetrating to cause minor damage. The Kido Butai opens fire on the planet, destroying four of the surface-based weapons. The four Raptors and two Avengers break orbit and move away at a speed of 5819 km/s, quickly passed by the ten small Ghosts moving at 8370 km/s. Hiei is hit again with eighty-two missiles, although none penetrate her armour.

Kaigun-Taisa Akita changes his orders. His fighters are the only option to catch the Avengers and prevent them from sniping at long-range against the Kido Butai, so he orders them to avoid the planet and pursue. His single intact battlecruiser Haruna and three of the light cruisers are ordered to target the aptly-named Devastator, to prevent its constant bombardment of Hiei.

As the fighters change course to move around the planet, they come under attack from seven particle lances on the surface, with one A1M ‘Raiden’ being hit and destroyed. This would represent a relatively fast recharge for the known particle lances, raising the possibility this is a second, shorter-ranged battery – especially considering the Raptors did not fire. That is confirmed when the sensor officers update their contacts. Hiei is targeted by another wave of missiles but for now her armour continues to absorb almost all the damage. Kirishima is still dead in space.



The light cruisers Abukuma, Tatsuta and Yura target the surface from 120,000 km, supported by Hiei at 180,000 km and Kirishima’s much-diminished laser battery at 220,000 km, without registering any hits. Moments later, the battlecruiser Haruna and the light cruisers Kuma and Tenryu, all in the rapidly shrinking main body of the Kido Butai, attack the Devastator, scoring seventeen strength-3 hits, one of which inflicts internal damage. That is not enough to prevent another wave of missiles being launched against Hiei. Several penetrate her armour and she loses a railgun. The light cruiser Isuzu hits one of the surface-based particle lances, but the Japanese crews begin to wonder when the remaining alien wonder weapons will fire again.

Hiei, Kirishima, Abukuma, Tatsuta and Yura fire again, destroying two more surface-based weapons, while the light cruiser Tama gets a hit through the armour of the Devastator. The targeting of the Devastator changes to the fast approaching Kido Butai and the battlecruiser Haruna receives her first hits of the battle. The change is too little too late. Haruna, Kuma and Tenryu open fire from 40,000 km, scoring thirty-two strength-9 hits, twenty-six of which penetrate the armour of the alien ship, although given its armament it is almost certainly an orbital base. Leaving the damaged base to the cruisers, Haruna changes her targeting to the planet. Meanwhile, the fighters are closing on the six 9600-ton alien ships that are moving away and outside weapon range of the Kido Butai.

The alien particle lances recharge and fire. The Raptors are too far away to target the Japanese ships, so they attack the fighters, destroying six. The seven surviving surface-based weapons from the first battery to fire target the relatively undamaged battlecruiser Haruna. Every shot hits and penetrate her armour. Suddenly Haruna vanishes in a colossal secondary explosion, almost certainly from one of her engines, that leaves nothing but drifting wreckage. The alien Devastator class base is finished off by the light cruiser Tama, but what would have been a satisfying blow against the enemy is completely overshadowed by the stunning loss of Haruna.

Kaigun-Taisa Akita, directing the battle from the crippled Kirishima, orders every remaining ship to fire on the planet. The Terror class ship, also probably a base, has still played no part in the battle so he is content to ignore it. The fighters are 48,000 km from the Raptors and will be in range within thirty seconds. Four more STOs are destroyed, then four survivors from the secondary STO battery open fire on the light cruiser Isuzu. Only two hit, but that is enough to take out both her engines, two lasers and two railguns.

The fighters close in on the six fleeing 9600-ton ships and open fire. Their combined firepower completely obliterates one the four Raptors. The two Avengers return fire with railguns, similar to those on ships of the Imperial Navy. Four A1Ms are lost. Kaigun-Taisa Akita gives the fighters the order to fire at will, so they all choose individual targets and close to point-blank range. The engagement turns into a brutal close-range, with the fighters constantly strafing the armour of the five remaining ships while the two Avengers wreak havoc with their massed railgun fire. A dozen fighters are destroyed before a second Raptor explodes, then eight more before the first Avenger is destroyed.

The aliens are in serious trouble by this point, with their armour reduced to remnants and their internal systems badly damaged. Another fighter is destroyed, and a second crippled, then both reaming Raptors explode simultaneously. The second Avenger kills two more fighters before it is overwhelmed. Thirty-five A1M ‘Raiden’ fighters have been destroyed in the pursuit, but all six of their targets have been eliminated. Combined with their defence of the Kido Butai during constant missile attack, the 1st Air Fleet has performed superbly.

At Kochi II, the survivors of the Kido Butai continue to bombard the surface, destroying the particle lances one by one until they are finally wiped out. The Kagoshima aliens still have the Terror class base, their ground forces and the ten small Ghosts, running too fast for the fighters to catch, but their threat is over. Kaigun-Taisa Akita considers an attempt to capture the last base, but dismisses it, instead ordering the fleet to obliterate it. It lasts ten seconds before exploding.

The Battle of Kochi has ended as a glorious victory for the Imperial Japanese Navy, but the cost is very high. Two of the four battlecruisers committed to the operation have been destroyed, a third is crippled and dead in space and the fourth has significant internal damage and is reduced to half speed. One light cruiser is disabled, a second is crippled and retreating and a third has armour damage. Thirty-five fighters have been lost. Almost three thousand crewmen, marines and pilots were killed. Only the carriers that pulled back early in the battle and five of the eight light cruisers escaped damaged. A new decoration, the Battle of Kochi Award, is bestowed on all officers who took part in the gallant action.

The light cruiser Tama rescues the four hundred survivors from the Haruna and the Kongo, then moves to picket the jump point from Mitaka. As Hiei is the only jump-capable ship in the system, due to the damage to Kirishima’s jump drive, she also begins the slow journey to the jump point at 2000 km/s. The remaining ships, including the carriers, maintain position near the cripples while they begin repairs to their internal systems using their remaining maintenance supplies. A pair of replenishment ships are en route from Earth.

Four hours after the battle, the ten Ghost class ships reappear on sensors heading for Kochi II, possibly in an attempt to rearm. Kaigun-Taisa Akita dispatches the 1st Air Fleet to intercept. The fighters destroy nine of the Ghosts as they pass, leaving a single ship still on course for planet. The light cruiser Abukuma is detached to intercept and scores two laser hits, disabling the Ghost’s engine and allowing the fighters to catch up and destroy it. The only remaining aliens in the system are on the surface of Kochi II. A ground invasion will be required.

Eight hours after the battle, Kirishima has managed to repair two of her damaged engines and the light cruiser Isuzu has repaired one of her engines, giving both ships a speed of 2000 km/s. Kaigun-Taisa Akita detaches the light cruisers Abukuma and Tatsuta to watch over Kochi II, then orders the Kido Butai to begin its journey back to Sol point at the speed of its slowest ships. Wrecks litter the system in its wake. The Empire of Japan does not have any salvage ships, although the technology has recently been developed. That will now be a priority.

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Re: Empire of the Stars - Updates Thread
« Reply #3 on: June 25, 2024, 08:11:43 AM »
2nd October 1965
Shinonome is conducting a geological survey of the Kyoto system, five transits from Sol, which has eight planets and a moderate-sized asteroid belt. The innermost planet is a barren terrestrial world similar in size and surface temperature to Mercury. Despite the unappealing conditions on the surface,  Kyoto I proves to be a very attractive place, at least from a geological perspective. Shinonome discovers two and half million tons of accessibility 1.0 Duranium, substantial accessible deposits of Neutronium, Boronide, Mercassium and Uridium and small or low accessibility deposits of five other minerals. Combined with the discoveries in Takamatsu earlier in the year, the survey of Sirius I in 1962 and the conquest of the Rasheed home world, the Empire of Japan is building up a substantial potential resource. The challenge in the coming years will be to exploit those opportunities.

Kyoto I Survey Report
Duranium:   2,571,912   1.00
Neutronium:   1,285,956   0.60
Corbomite:   11,664   0.40
Tritanium:   2,205,225   0.10
Boronide:   352,836   0.90
Mercassium:   1,476,225   0.80
Vendarite:   531,441   0.20
Sorium:   72,900   0.30
Uridium:   210,681   0.70
Gallicite:   4,100,625   0.30

27th October 1965
The survey cruiser Shirakumo conducts an orbital survey of Kochi I and finds a Ruined Colony on the surface. The mineral deposits are minimal, so this ancient ruin is apparently what the Kagoshima aliens were guarding. During the recent battle, the Imperial Navy ships detected no atmosphere streaming from damaged alien ships and no sign of bodies. Based on this evidence, Imperial Naval Intelligence has theorised the aliens are the remaining robotic guardians of a dead civilization, With that in mind, INI has assigned them the reporting name of Zuijin; the warrior guardians of Shinto mythology.

3rd December 1965
The human population on Osaka III has surpassed that of the indigenous Rasheed, except for those in labour camps. Twenty-one million humans are on the planet, along with one hundred and forty construction factories and seventy-two mines transported from Earth. Approximately twenty million Rasheed have been conscripted to form one hundred and eighty-six forced labour mining camps and fifteen forced labour construction camps. A further twenty million Rasheed remain in the planet’s original towns and cities. They will all be put to work for the benefit of the Empire, once the necessary additional camps have been constructed. To celebrate this milestone, the planet is named New Osaka.

16th December 1965
The Third and Fifth Divisions land on Kochi II to confront the Zuijin ground forces. The total force includes over twenty thousand infantry, a thousand machine guns, two hundred and forty Type 14 Chi-Ro Battle Tanks and a similar number of Type 8 Ke-Ro light tanks. A variety of light howitzers, anti-tank guns and field guns provide support. The transport capacity for the entire force was 200,000 tons. The size and capability of the Zuijin forces is unknown except for a ground forces signature of 17,600 tons, which suggests a force in the 50,000 – 60,000 ton range.

As battle is joined, the Japanese infantry get their first real look at the Zuijin. Their forces are entirely robotic, with the bulk of the force comprised of humanoid robots over two metres tall, well-armoured and armed with machine guns. They are supported by much larger machines of three to four metres, armed with a variety of heavy weapons and armour similar to that of the Japanese battle tanks. The engagement is fierce with no quarter given on either side. The Zuijin have the technology edge, while the Japanese have numbers and determination.

The initial clashes result in heavy casualties on both sides, but the greater numbers of the Imperial Japanese Army soon begin to tell. Each robot or Mech destroyed hurts the Zuijin more than the loss of a Japanese infantryman or machinegun. After six days, every Zuijin has been hunted down and eliminated. Japanese casualties include almost two thousand infantry, two hundred machine guns and fifty tanks. With the planet secured, two Xenoarchaeology regiments are summoned from Earth to begin an investigation into the ruins.

9th February 1966
Kashii (a shrine on Hakuta Bay), the eighteenth Nagara class light cruiser, is launched from the Kure Naval Dockyards. This was the last Nagara under construction. The focus of the Kure dockyard will now shift to refitting the existing ships, once all the requisite technology is available.

14th March 1966
The survey cruiser Amagiri probes one of three remaining unexplored jump points in Mitaka and discovers Sakura, a red dwarf system with five planets, one of which has a nitrogen-oxygen atmosphere with 0.05 atm of oxygen and extensive ice sheets. Amagiri launches a drone at the planet, Sakura III, and detects a single 19,405-ton Vanquisher class ship of the Zuijin, the capabilities of which are unknown. Kochi, scene of the recent battle, is also adjacent to Mitaka. The drone is not intercepted and moves into orbit, where it also detects a 20,000-ton ground forces signature.

Kaigun-Taisho Nagata Tokimoto, commander of the combat forces of the Imperial Japanese Navy, considers an attack on this new Zuijin target. On the assumption the planet has surface-based particle lances, he believes the best option would be a fighter strike from long range. After the loss of Kongo and Haruna, there are only four Kongo class battlecruisers in service and only the Kongos have the jump drive required to escort the carriers into Sakura. However, Hiei and Kirishima have just been deployed to the picket of the Tsushima – Scimitar jump point, after completing repairs, while Fuso and Yamashiro have only recently returned to Sol and are in overhaul. An operation will be launched once at least one battlecruiser is available.

4th April 1966
The fuel stockpile on Earth has fallen below ten million litres, which is seriously hindering the operations of the Imperial Navy. Four hundred refineries on Earth are producing nineteen million litres per year, but that is only a fraction of the total fuel capacity of all Japanese ships, which is over one hundred and fifty million litres. Four fuel harvesting stations are in orbit of Neptune and produce a further nine million litres a year. Three more have been constructed but remain in Earth orbit, due to the time taken for Eikai Maru, the lone 52,000-ton tug currently in service, to tow the 130,000-ton stations to Neptune. A second Eikai Maru class will be available at the end of May and the first 140,000-ton Shokai Maru class tug will be completed in July.

7th May 1966
Yoshino (a town in Nara prefecture), the last of nine Sendai class light cruisers, is launched from the Kure Naval Dockyards.  As part of the planned refit programme, all the Nagara and Sendai class ships will be refitted to a common upgraded design, that lacks a jump drive. A new jump drive-capable class will be designed to replace the Sendai class.

The first pair of Imperial Navy salvage ships, Kasashima Maru and Kasuga Maru, are also completed, along with the first five Kansai-Ro Maru class freighters. Two freighters are assigned to each of the salvage ships, which are dispatched to Tsushima and Kochi respectively.

25th July 1966
A much smaller version of the Kido Butai arrives in Sakura, under the command of Kaigun-Taisa Haruguchi Shiro, captain of the carrier Shokaku. Four Akagi class carriers are escorted by the battlecruiser Yamashiro and the light cruisers Kashima and Sakawa. Two hundred and forty A1M and A1M2 ‘Raiden’ fighters are embarked.

Kido Butai
Akagi class Carrier: Hiryu, Shokaku, Soryu, Zuikaku
Kongo class Battlecruiser: Yamashiro
Nagara class Light Cruiser: Kashima, Sakawa

The Kido Butai moves across the system to within one hundred million kilometres of Sakura III and holds position while Yamashiro launches a Gekko reconnaissance drone to confirm the presence of the Zuijin Vanquisher and the ground forces.  Kaigun-Taisa Haruguchi orders all two hundred and forty fighters to conduct a strike mission. The target is the Vanquisher, plus any ground-based weapons. Three and a half hours later, the fighters are 250,000 km from the planet with no resistance so far.

At 227,000 km, they come under fire from sixteen surface-based particle lances. Four fighters are hit and destroyed. At 107,000 km, the Vanquisher launches forty size-11 missiles. The missiles move in the opposite direction to the oncoming fighters and detonate, unleashing laser beams from over a hundred thousand kilometres away. Fortunately only two fighters are targeted, probably due to the Vanquisher having a limited number of fire control systems. Both are destroyed. Another fighter is lost to a second battery of seven particle lances.

The ‘Raiden’ fighters close to point-blank range and open fire on the Vanquisher. Two volleys are sufficient to blow the 19,400-ton base to pieces. Their attention turns to the ground-based weapons. Within the space of thirty devastating seconds, the fighters streak across the icy landscape, strafing every particle lance emplacement they can find. Three are lost to hostile fire, but the surface is scoured clean of threats. The fortified Zuijin ground force is a much harder target and will require an invasion force. The fighters, minus ten of their number, head back to their carriers. Once again, the 1st Air Fleet has proven to be a highly effective force.

3rd October 1966
The ruins on Kochi II have been surveyed. Sixty-two sites of interest were discovered for the potential recovery of installations or resources.

4th November 1966
The 3rd and 5th Divisions land on Sakura II and engage the Zuijin ground force. The battle is just as brutal as on Kochi II. After six days, the planet is secured, albeit with the loss of three thousand infantry and numerous armoured vehicles.

25th November 1966
A colony of one point five million is established on Takamatsu II.

26th November 1966
The carriers Akagi and Kaga are refitted to the Akagi II class. The main changes in the updated design are new engines and active sensors.

Akagi II class Carrier      36,000 tons       621 Crew       4,379.3 BP       TCS 720    TH 3,600    EM 0
5000 km/s      Armour 2-97       Shields 0-0       HTK 158      Sensors 5/6/0/0      DCR 21-5      PPV 0
Maint Life 2.47 Years     MSP 4,481    AFR 494%    IFR 6.9%    1YR 1,015    5YR 15,225    Max Repair 450 MSP
Hangar Deck Capacity 17,000 tons     
Kaigun-Taisa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 3 months    Flight Crew Berths 340    Morale Check Required   

Koga-Murakama KM-900-B Ion Drive  (4)    Power 3600    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 2,000,000 Litres    Range 22.2 billion km (51 days at full power)

Type 25 Go-11B Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 8 Go-53A Passive Sensor (1)     Sensitivity 5     Detect Sig Strength 1000:  17.7m km
Type 10 Go-63A Passive Sensor (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km

Strike Group
60x Mitsubishi A1M2 'Raiden' Fighter   Speed: 8001 km/s    Size: 5.5
2x Aichi E1A Scout   Speed: 6001 km/s    Size: 5

30th November 1966
The light cruisers Nagara, Natori, Isuzu and Tenryu are refitted to the Nagara II class. The improved components include engines, reactors, fire control systems and sensors. The boat bay has been removed. Despite the recent development of 25cm far ultraviolet lasers, the Imperial Navy shipwrights decided to retain the existing armament to increase the speed at which the twenty-seven Nagara and Sendai class light cruisers can be updated.

Nagara II class Light Cruiser      18,000 tons       600 Crew       2,825.1 BP       TCS 360    TH 1,800    EM 0
5000 km/s      Armour 6-61       Shields 0-0       HTK 117      Sensors 10/16/0/0      DCR 10-5      PPV 108
Maint Life 2.05 Years     MSP 1,480    AFR 259%    IFR 3.6%    1YR 471    5YR 7,066    Max Repair 450 MSP
Troop Capacity 500 tons     Boarding Capable   
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Koga-Murakama KM-900-B Ion Drive  (2)    Power 1800    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 789,500 Litres    Range 17.5 billion km (40 days at full power)

Kentaro-Sakura KS-20A Ultraviolet Laser (12)    Range 256,000km     TS: 5,000 km/s     Power 10-3.5     ROF 15       
Takashi Kinetics TK-10A Railgun (12x4)    Range 10,000km     TS: 5,000 km/s     Power 3-3     ROF 5       
Type 25 Go-31B Laser Fire Control (2)     Max Range: 256,000 km   TS: 5,000 km/s    ECCM-1   
R-40 Magnetic Mirror Fusion Reactor (2)     Total Power Output 80    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-11B Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 8 Go-51A Passive Sensor (1)     Sensitivity 10     Dete1ct Sig Strength 1000:  25m km
Electronic Warfare Jammers:   Fire Control 1    Missile 1   

Ground Forces
1x Naval Landing Force

17th December 1966
The survey cruiser Amagiri discovers a ruined settlement on Sakura III, reinforcing the theory that the Zuijin are the automated remnants of a lost civilization. The troubling question for Imperial Naval Intelligence is who or what was powerful enough to destroy the technologically advanced Zuijin and where are they now?

7th March 1967
All available deposits of Boronide are exhausted on Earth and almost every other mineral is becoming harder to extract. It is increasingly urgent that substantial new sources of mineral are established before those on Earth run out entirely. New Osaka has one hundred and thirty-two mines, plus two hundred and three forced labour mining camps, but Earth is still home to sixteen hundred mines. The fuel situation is also critical, with just two million litres on Earth.

Earth Survey Report
Duranium:   142,580   0.83
Neutronium:   56,377   0.51
Corbomite:   59,857   0.53
Tritanium:   31,972   0.27
Mercassium:   21,347   0.29
Vendarite:   145,888   0.69
Sorium:   163,915   0.78
Uridium:   3,719   0.15
Corundium:   251,570   0.50
Gallicite:   26,910   0.35

8th May 1967
The survey of the ruins of Sakura III is complete. Twenty-seven sites of interest have been identified.

7th June 1967
The survey cruiser Asagiri discovers Takahama, a red dwarf binary four jumps from Sol via Proxima, Aomori and Kushiro. This is the fifty-ninth known system. The primary and companion have two and three planets respectively, with the second planet of each star having a nitrogen-oxygen atmosphere. Takahama-A II is a warm ocean world, larger than Earth, with about eight percent of the surface covering by mountainous islands and an atmosphere of 0.62, including just 0.01 atm of oxygen. Takahama-B II is a super-terrestrial planet, 24,000 km in diameter, with high gravity and a dense atmosphere of over 3 atm, including 0.51 atm of oxygen. Seventy percent of the surface is ocean. Vast rift valleys cover much of the land area. Asagiri launches reconnaissance drones at both.

Takahama-A II appears to be uninhabited, but the second drone detects Zuijin forces in orbit of Takahama-B II, comprising a Devastator class missile defence base, armed with ninety-one light missile launchers, a Terror class base, a 19,287-ton Ravager, and three ships of 9628-tons: a Hunter, Impaler and Razor. Apart from the Devastator, the capabilities of the Zuijin ships remains unknown. The drone is destroyed by missiles before anything else can be learned. Kaigun-Taisho Nagata Tokimoto, commander of the combat forces of the Imperial Japanese Navy, decides to wait until he has a substantial force of upgraded ships.



4th July 1967
The ongoing survey of Sirius, two jumps from Sol via Proxima, reveals a jump point that is probed immediately, resulting in the discovery of Kapteyn’s Star, an M0-V red dwarf with two planets. The inner planet, which has a thin nitrogen-carbon dioxide atmosphere and a few small lakes, is home to pair of Zuijin bases: a Devastator and a Terror. The Devastator would no doubt cause high casualties in the case of a fighter strike, similar to that in Sakura. However, a new fighter type, the A2M ‘Shinden’ (Magnificent Lightning), has recently began construction, so Kaigun-Taisho Nagata begins to consider a strike using the older A1M ‘Raiden’s, once the new fighters are in service in sufficient numbers.

Mitsubishi A2M 'Shinden' class Fighter      275 tons       1 Crew       62.7 BP       TCS 5    TH 66    EM 0
12002 km/s      Armour 1-3       Shields 0-0       HTK 1      Sensors 0/0/0/0      DCR 0-0      PPV 1.65
Maint Life 1.36 Years     MSP 10    AFR 55%    IFR 0.8%    1YR 6    5YR 87    Max Repair 33 MSP
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 0.3 days    Morale Check Required   

Koga-Murakama KM-66-DB Ion Engine (1)    Power 66    Fuel Use 1331.73%    Signature 66    Explosion 24%
Fuel Capacity 5,600 Litres    Range 0.28 billion km (6 hours at full power)

MK I Cannon (1x2)    Range 10,000km     TS: 12,002 km/s     Power 1.5-1.5     ROF 5       
Type 25 Go-34A Cannon Fire Control (1)     Max Range: 51,200 km   TS: 12,000 km/s    ECCM-1   
R-1B Magnetic Mirror Fusion Reactor (1)     Total Power Output 1.5    Exp 10%

Type 25 Go-24B Fighter Sensor (1)     GPS 2     Range 2m km    MCR 181.7k km    Resolution 1

24th October 1967
Another Zuijin outpost is detected in Sendai, three jumps from Sol via Proxima and Aomori. In orbit around the second planet, an Earth-sized world with an almost breathable atmosphere, are three bases: a Devastator, a Terror and a Vanquisher. There are now four active Zuijin systems, including Kagoshima. Kaigun-Taisho Nagata continues to wait, despite impatience from some of his senior officers, for more of the Imperial Navy to undergo refits.

13th March 1968
The 1st Hiko Sentai (air group), comprised of twenty-four Mitsubishi G1M 'Donryu' (Storm Dragon) Long Range Strike craft becomes operational on Earth. This is the first Imperial Navy unit armed with missiles. Each G1M carries a pair of Rakurai (Lighting Strike) anti-ship missiles with strength-12 warheads and is designed for long-range attacks from planetary bases. In addition to its warhead, the Rakurai has ECCM, active terminal guidance and five decoys.

Mitsubishi G1M 'Donryu' class Long Range Strike      500 tons       3 Crew       64 BP       TCS 10    TH 63    EM 0
6250 km/s      Armour 1-5       Shields 0-0       HTK 5      Sensors 0/0/0/0      DCR 0-0      PPV 3.6
Maint Life 1.71 Years     MSP 25    AFR 100%    IFR 1.4%    1YR 10    5YR 155    Max Repair 31.3 MSP
Magazine 24 / 0   
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 18 days    Morale Check Required   

Koga-Murakama KM-62-B Gas Core Drive (1)    Power 62.5    Fuel Use 193.35%    Signature 62.5    Explosion 12%
Fuel Capacity 58,400 Litres    Range 10.9 billion km (20 days at full power)

Type 23 Fixed Missile Launcher (2)     Missile Size: 12    Hangar Reload 173 minutes    MF Reload 28 hours
Type 26 Go-44B Missile Fire Control (1)     Range 19.9m km    Resolution 120   ECCM-1
Rakurai Anti-ship Missile (2)    Speed: 31,250 km/s    End: 4.3m     Range: 8m km    WH: 12    Size: 12    TH: 125/75/37
Type 26 Go-14B Strike Sensor (1)     GPS 768     Range 19.9m km    Resolution 120

1st June 1968
The first Sagami Maru class troop transport is completed. Due to the recent invasions and requirement to move survey and engineer regiments to various parts of the Empire, the ten Shinshu Maru class transports are overworked. The Sagami Maru has four times the capacity of its smaller sister and can carry an entire division.

Sagami Maru class Troop Transport      183,735 tons       896 Crew       3,594.9 BP       TCS 3,675    TH 7,500    EM 0
2040 km/s      Armour 1-287       Shields 0-0       HTK 298      Sensors 5/6/0/0      DCR 1-0      PPV 0
MSP 12    Max Repair 320 MSP
Troop Capacity 100,000 tons     Cargo Shuttle Multiplier 10   
Kaigun-Shōsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   

Koga-Murakama KC-300 Ion Drive  (25)    Power 7500    Fuel Use 2.89%    Signature 300    Explosion 4%
Fuel Capacity 750,000 Litres    Range 25.4 billion km (144 days at full power)

Type 12 Go-13A Navigation Sensor (1)     GPS 1440     Range 23.6m km    Resolution 120
Type 8 Go-53A Passive Sensor (1)     Sensitivity 5     Detect Sig Strength 1000:  17.7m km
Type 10 Go-63A Passive Sensor (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km

12th June 1968
The battlecruisers Hiei and Kirishima have been refitted to the new Kongo II class. This is a much more extensive update compared to the light cruisers and includes new engines, reactors, sensors, fire controls and weapons. The Kentaro-Sakura KS-25A Far Ultraviolet Laser is a significant upgrade to the earlier Kentaro-Sakura KS-20A Ultraviolet Laser, albeit with a five second longer recharge time. Twenty-four of the older weapon have been replaced by sixteen KS-25As. The secondary railgun battery has been replaced by eight twin 12cm laser turrets, which provide point defence but can also contribute offensive firepower out to 200,000 km.

Kongo II class Battlecruiser      36,000 tons       1,134 Crew       6,837.9 BP       TCS 720    TH 3,600    EM 0
5000 km/s    JR 3-50      Armour 8-97       Shields 0-0       HTK 222      Sensors 10/16/0/0      DCR 20-5      PPV 215.04
Maint Life 1.91 Years     MSP 3,374    AFR 518%    IFR 7.2%    1YR 1,192    5YR 17,885    Max Repair 450 MSP
Kaigun-Taisa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Komatsu KMJ-360 Jump Drive     Max Ship Size 36000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-900-B Ion Drive  (4)    Power 3600    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 1,521,000 Litres    Range 16.9 billion km (39 days at full power)

Kentaro-Sakura KS-25A Far Ultraviolet Laser (16)    Range 256,000km     TS: 5,000 km/s     Power 16-4     ROF 20       
Twin Kentaro-Sakura KS-12A Turret (8x2)    Range 200,000km     TS: 16000 km/s     Power 8-8    ROF 5       
Type 27 Go-31C Turret Fire Control (2)     Max Range: 64,000 km   TS: 16,000 km/s    ECCM-2   
Type 27 Go-31C Laser Fire Control (2)     Max Range: 256,000 km   TS: 5,000 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (4)     Total Power Output 143.1    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-12B Capital Ship Sensor (1)     GPS 23040     Range 109.1m km    Resolution 120
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 8 Go-51A Passive Sensor (1)     Sensitivity 10     Detect Sig Strength 1000:  25m km
Electronic Warfare Jammers:   Fire Control 1    Missile 2   

31st August 1968
Kasagi (named after Mount Kasagi - literally Conical Hat), the first in a new class of light cruisers, is constructed by the Matsuoka Marine Industries orbital shipyard. In broad terms, the Kasagi will replace the jump-capability of the older Sendai class, the remaining units of which of which will be converted to the Nagara II class. The Kasagi uses the same updated weapons as the Kongo II, but with an emphasis on defence, and is the first class to mount the Type 28 Go-71B Fighter Detection sensor.

Kasagi class Light Cruiser      18,000 tons       546 Crew       3,382.3 BP       TCS 360    TH 1,800    EM 0
5000 km/s    JR 3-50      Armour 6-61       Shields 0-0       HTK 109      Sensors 10/16/0/0      DCR 10-5      PPV 97.28
Maint Life 2.32 Years     MSP 2,174    AFR 259%    IFR 3.6%    1YR 550    5YR 8,251    Max Repair 450 MSP
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Komatsu KMJ-180 Jump Drive     Max Ship Size 18000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-900-B Ion Drive  (2)    Power 1800    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 787,500 Litres    Range 17.5 billion km (40 days at full power)

Kentaro-Sakura KS-25A Far Ultraviolet Laser (4)    Range 256,000km     TS: 5,000 km/s     Power 16-4     ROF 20       
Twin Kentaro-Sakura KS-12A Laser Turret (6x2)    Range 200,000km     TS: 16000 km/s     Power 8-8    ROF 5       
Type 27 Go-31C Turret Fire Control (1)     Max Range: 64,000 km   TS: 16,000 km/s    ECCM-2   
Type 27 Go-31C Laser Fire Control (2)     Max Range: 256,000 km   TS: 5,000 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (2)     Total Power Output 71.6    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-11B Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 28 Go-71B Fighter Detection (1)     GPS 160     Range 13.8m km    Resolution 10
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 8 Go-51A Passive Sensor (1)     Sensitivity 10     Detect Sig Strength 1000:  25m km
Electronic Warfare Jammers:   Fire Control 1    Missile 2   

11th November 1968
All eight Akagi class carriers have been refitted to the Akagi II class. Kaga, Soryu, Hiryu and Shokaku each have strikegroups of sixty A1M ‘Raiden’ fighters. Zuikaku and Ryujo have strikegroups of A1M2 ‘Raiden’ fighters, which have greater range. Akagi has sixty of the faster A2M ‘Shinden’ fighters. Zuiho lacks a strikegroup, but additional A2Ms are under construction.

19th February 1969
The fuel crisis is easing, due to the construction and deployment of eighteen fuel harvesters, six of which are a new, larger hull, but a new crisis has arisen; the Empire of Japan is running out of manpower. Only two million people out of Earth’s population of 2,254m are unemployed. The Mars colony has a population of ten million and they are entirely dedicated to running over a hundred financial centres. The human population on New Osaka has reached forty million, but with less than one million unemployed. The planet has over a hundred construction factories, two hundred and twenty mines and more than four hundred forced labour mining camps. The remaining ‘free’ Rasheed population is a little over two million.

The only other colonies of note are three million settlers on Tsushima I, a colony originally established to counter any territorial claim by the Scimitar Empire, plus two and a half million on Takamatsu II, which will eventually become a major mining colony. The lack of manpower will halt the Empire’s recent attempts to increase its research and shipbuilding capacities, to further improve the fleet, and to build financial centres to combat a growing wealth crisis.

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Re: Empire of the Stars - Updates Thread
« Reply #4 on: June 25, 2024, 08:39:20 AM »
22nd February 1969
With the refit programme well underway, Kaigun-Taisho Nagata decides to conduct a combat test of The 1st Hiko Sentai and its twenty-four Mitsubishi G1M 'Donryu' Long Range Strike craft. The target is the Zuijin presence in Kapteyn’s Star, three transits from Sol via Proxima and Sirius, which consists of two bases; a Devastator class, armed with ninety-one light missiles, and a Terror class, the armament of which was unknown but suspected by Imperial Naval Intelligence to be focused on short-range point defence. The raid has two purposes: test the capabilities of the Rakurai anti-ship missile against Zuijin defences and determine the defensive capability of the Terror class. Destroying either base is considered highly unlikely, so the raid is primarily for intelligence gathering. The target is nine billion kilometres from Sol and the G1M has a range of eleven billion. Therefore, Kaigun-Taisho Nagata orders the forward deployment of Kenyo Maru, an Akatsuki Maru class Replenishment Ship, before the raid is launched. A Kawanishi H1K 'Saiun' class Long Range Patrol craft is also dispatched to the Sirius – Kapteyn’s Star jump point to provide jump-capability for the G1Ms.

Akatsuki Maru class Replenishment Ship      30,000 tons       185 Crew       699.3 BP       TCS 600    TH 1,200    EM 0
2000 km/s    JR 3-50(C)      Armour 1-86       Shields 0-0       HTK 64      Sensors 5/6/0/0      DCR 1-0      PPV 0
MSP 10,014    Max Repair 75 MSP
Cargo Shuttle Multiplier 1   
Kaigun-Chūsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   

Komatsu KMC-300 Jump Drive     Max Ship Size 30000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KC-240 Gas-Core Drive  (5)    Power 1200    Fuel Use 2.89%    Signature 240    Explosion 4%
Fuel Capacity 9,654,000 Litres    Range 2,003 billion km (11591 days at full power)
Refuelling Capability: 50,000 litres per hour     Complete Refuel 193 hours

Type 12 Go-13A Navigation Sensor (1)     GPS 1440     Range 23.6m km    Resolution 120
Type 8 Go-53A Passive Sensor (1)     Sensitivity 5     Detect Sig Strength 1000:  17.7m km
Type 10 Go-63A Passive Sensor (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km

Kenyo Maru arrives in Kapteyn’s Star and takes up position at the Sirius jump point, four billion kilometres from the inner system. Shortly after notifying Combined Fleet headquarters of her incident-free arrival, the ship detects a single strength-4 energy weapon impact less than a million kilometres from the location of the two Zuijin bases, in orbit of the first planet. That is followed almost immediately by eighty-one strength-1 warhead detonations, a strength-94 secondary explosion and the appearance of a 9,890-ton wreck of unknown origin. Someone, or something, is being engaged by the Zuijin. The raid suddenly takes on a completely new dimension. Kaigun-Taisho Nagata allows the strike craft to continue their mission, while reassembling the Kido Butai to mount a real attack and discover the identity of the new aliens.

7th March 1969
The 1st Hiko Sentai is delayed from entering Kapteyn’s Star, due to the late arrival of the slow-moving Kawanishi H1K 'Saiun'. They finally begin their four-billion kilometres approach to the first planet, just as the Kido Butai enters the system. Kaigun-Taisho Nagata has assembled a fleet of four carriers, both Kongo II battlecruisers, the new Kasagi class light cruiser and six Nagara II-Ro class light cruisers. The II-Ro is a minor update of the Nagara II, with an improved missile jammer and second generation ECCM for its fire control systems. The Kido Butai is once again under the command of Kaigun-Taisa Haruguchi Shiro, who led the fleet during the fighter strike on Sakura III. Haruguchi decides to wait on the result of the missile attack before moving his fleet deeper into the system.

Kido Butai
Kongo II class Battlecruiser: Hiei, Kirishima
Akagi II class Carrier: Hiryu, Kaga, Shokaku, Soryu
Nagara II-Ro class Light Cruiser: Jintsū, Kashii, Kashima, Kashiwara, Kuma, Sakawa
Kasagi class Light Cruiser: Kasagi
240x Mitsubishi A1M ‘Raiden’ fighter

14th March 1969
The 1st Hiko Sentai moves to within five million kilometres of Kapteyn’s Star I, confirming the presence of the two Zuijin bases, without any sign of hostile action. Kaigun-Taisa Haruguchi gives the attack order and the twenty-four G1Ms launch forty-eight Rakurai anti-ship missiles at the Devastator class base: the first missile attack in the history of the Imperial Japanese Navy.

Eleven strength-1 detonations are detected a million kilometres from the target, but the hostile missiles only strike decoys. Fifteen more decoys are destroyed at 800,000 km, along with two Rakurai. As the decoys are destroyed, the missiles become easier targets and they start to vanish from Japanese tracking monitors. Even so, thirty-five make it through the defensive missile screen. Fourteen strength-1 energy impacts are registered as the Rakurai reach point-blank range. Thirty detonate their strength-12 warheads, seventeen of which destroy the Zuijin’s own decoys. Thirteen strike the Devastator and one penetrates the armour.

Kaigun-Taisa Haruguchi regards the attack as a success and a great demonstration of the potential for further Rakurai attacks. He orders the 1st Hiko Sentai to return to Earth, reload and conduct a second raid before his own ships move in. Meanwhile, the Kido Butai will hold position and look for further evidence of the unknown alien race.

25th March 1969
Minato is a system only two transits from Sol, via Proxima, yet is has never been surveyed. The system primary is a planetless M4-V red dwarf, with only three small comets for company. Imperial Navy survey ships have bypassed Minato to focus on more promising candidates further from Sol. However, the four Kawanishi H1K 'Saiun' class Long Range Patrol craft have been used to deploy Zuiun Sensor Buoys on both sides of every jump point within two transits of Sol. The senor buoy on the Minato – Proxima jump point detects an 9,336-ton ship from an unknown alien race, approaching at 3,735 km/s.

With the Kido Butai deployed in Kapteyn’s Star, this is not ideal timing. Minato is only three jumps from Kapteyn’s Star, but there are buoys in-between that would detect any ships moving between them, so this may be a second new race. A force comprising the carrier Ryujo and the Nagara II class light cruisers Kitakami and Niyodo is immediately dispatched from Sol to picket the Proxima – Minato jump point, although the squadron lacks jump capability and the jump point is not stabilised. Kaigun-Taisho Nagata orders Kaigun-Taisa Haruguchi to detach a pair of light cruisers to remain in Kapteyn’s Star to monitor the second G1M strike and watch for aliens, then bring the rest of the Kido Butai to Proxima. Until the threat can be evaluated, the Imperial Japanese Navy must prepare for the worst.



Within an hour, the alien ship, designated as Medina class, transits into Proxima and is detected by the buoy on the far side. Proxima has six jump points, including Sol and Minato, and is a vital junction system at the heart of the Empire of Japan. The greater danger is that the alien ship is a single transit from Sol. A survey of Minato is now of the highest priority, but the closest survey ship is over a month away. After a day spent stationary on the jump point, the Medina transits back into Minato and moves out of range of the sensor buoy.

10th April 1969
A  new 7,535-ton ship of the Minato aliens, designated as Tikatha class is detected approaching the Proxima jump point from the Minato side. Shortly thereafter, it transits into Proxima, where Ryujo, Kitakami and Niyodo are stationed on the Minato jump point, along with a Hosho class diplomatic ship. The Kido Butai is in Proxima, en route from the Sirius jump point to the Sol jump point. The aliens seem willing to attempt communication, so Kaigun-Taisho Nagata decides to hold all forces in place for the moment.



20th April 1969
The 1st Hiko Sentai returns to Sirius and launches a second strike against the Devastator class base. Twenty-two of the forty-eight Rakurai reach the target, with eight being distracted by decoys. Of the fourteen missiles that detonate on target, ten penetrate the armour. Imperial Naval Intelligence believes this may have seriously damaged the missile base, so Kaigun-Taisho Nagata orders the two light cruisers that remain in the system, Sakawa and Kashii, to approach the planet and test its defences, but to remain outside the estimated 240,000 km range of the Zuijin particle lance weapon.

29th April 1969
As Sakawa and Kashii move within four point five million kilometres of Kapteyn’s Star, they detect a ground forces signature of 4400 tons. Given the contact size, this is likely to be a surface particle lance battery, without the usual supporting ground force. They continue to close, closely monitoring the Devastator. At just over one point four million kilometres, they detect a launch of forty-eight light missiles. Both ships reverse course, as the Devastator still has half its launchers operational, and prepare to defend themselves. Only six missiles are hit by their point defence. Forty-one strike Sakawa, although her armour is not penetrated. There is no follow-up attack, so they pull back to the Sirius jump point.

24th May 1969
The survey cruiser Amagiri completes a survey of the Hadano system. Hadano is part of an eight system loop (Sol – Proxima – Epsilon Indi – Mitaka – Sakura – Hadano – Yao – Lalande – Okami – Sol) and is roughly equidistant from Sol in either direction. There is a small colony in the adjacent system of Sakura, created by the civilian shipping lines to take advantage of infrastructure found in the local Zuijin ruins. In addition to the known jump points to Sakura and Yao, Amagiri discovers a third, unexplored jump point. The new jump point is stable and it was not stabilised by the Empire of Japan. This could be another sign of the Minato aliens, as could the  mysterious wreck in Kapteyn’s Star, or the Empire could have encountered three new alien races within three months.

As communication attempts are underway at the Proxima – Minato jump point and the survey cruiser Asagiri is at work in Minato without interference, Kaigun-Taisho Nagata recently ordered the Kido Butai back to Earth for a brief overhaul, leaving Ryujo, Kitakami and Niyodo as the Minato jump point picket. Sakawa and Kashii remain in Kapteyn’s Star. Hadano has no stable jump point to the rest of the Empire of Japan, so a jump-capable ship is required to enter the system. The two Kongo IIs and the single Kasagi are in overhaul, the two Kongo Is and five of the six remaining Sendai class light cruisers are undergoing refits and the next Kasagi will not be completed until August. The only available jump-capable ship is Yubari, an un-refitted Sendai. She is immediately dispatched to Hadano in the company of Abukuma, a Nagara II-Ro. Three Kawanishi H1K 'Saiun' leave in their wake to deploy sensor buoys at the Hadano jump points. Amagiri heads for the new jump point to conduct a probe, but she is at the far side of the system and thirty days away at her top speed of 2100 km/s. Despite starting in Sol orbit, the warships will arrive first.

4th June 1969
Full communication is established with the Minato aliens, although disturbingly because they learn to understand Japanese before the Empire can decipher their language. The alien species refers to themselves as the Velsharoon, while their form of government is a theocracy, officially known as The Covenant of Velsharoon. In appearance, the Velsharoon are even more alien than the Scimitarans. Their heads are long and similar to that of a shark, while their bodies are bearlike and covered with long spines. That apparent strength will be useful once the necessary labour camps are established. For now, the Empire will focus on establishing their military strength, their level of  technology and the location of their major populations. The Tikatha class is a diplomatic ship, so the Hosho will remain in place to maintain relations in the interim, covered by the three Imperial Navy warships.



6th June 1969
Two survey cruisers, Amagiri and Fubuki, are already at work in Minato. They are joined by Yugiri. So far, no jump points have been found.

19th June 1969
As the light cruisers Yubari and Abukuma draw close to the unexplored jump point in Hadano, they detect active emissions from a Covenant Tikatha class diplomatic ship apparently waiting for their arrival. While the aliens in Kapteyn’s Star have yet to be identified, Imperial Navy Intelligence is now confident that the aliens in Hadano and Minato are the same race. Somewhere, in unexplored space, there is be a connection between the two systems. The Imperial Navy must now find it.

Thirty minutes later, that comfortable conclusion is shattered when an 8,732-ton ship from a new alien race, designated as Hegu class, is detected on the same jump point. Somehow, two different alien races have found the jump point into Hadano and they are apparently allied, or at least not hostile. The cruisers continue onwards and take up position on the jump point.



The Empire of Japan is faced with a grave situation. The Covenant of Velsharoon and the new alien race have access to the core of the Empire. There is potentially a third alien race probing the borders in Kapteyn’s Star and the Imperial Navy continues to guard the Tsushima – Scimitar jump point, just one transit from Sol, against the hostile Scimitar Empire. In addition, there are four Zuijin-occupied systems, although they do not seem to pose an offensive threat.

Daigensui-Kaigun- Taisho Takagi Razan, commander-in-chief of the Imperial Japanese Navy, determines that the strategy of the Imperial Navy will be to explore the systems beyond the known points of contact, identify potential choke points, establish well-defended colonies in those systems and, if necessary, enforce its claim to that territory. to do that, The Imperial Japanese Navy must expand significantly. Unfortunately the Empire is simultaneously facing a wealth crisis, a manpower crisis and the exhaustion of the mineral resources on Earth. Existing resource stockpiles will last for a while, but unless New Osaka and the recently established Takamatsu colony can replace the supply of those resources, shipbuilding may soon be severely constrained.

20th June 1969
The new aliens in Hadano appear willing to attempt communication. The Hegu class ship is apparently a diplomatic ship, so it is possible that the Hadano aliens and the Velsharoon are also attempting communication and not already friendly powers.

26th June 1969
The survey cruiser Amagiri transits the unexplored jump point in Hadano and discovers Kaizu, a planetless red dwarf star. There is no immediate sign of any alien ships, so she begins a gravitational survey.

12th July 1969
The battlecruisers Fuso and Yamashiro are refitted to the Kongo II class.

23rd July 1969
Zuiho is assigned her full strikegroup of sixty Mitsubishi A2M2 ‘Shinden’ fighters and two Aichi E1A scouts. All eight carriers now have full strikegroups. With several ships completing refits recently and everything relatively quiet at the points of contact in Proxima and Hadano, Kaigun-Taisho Nagata decides to return to the unfinished business in Kapteyn’s Star. The 1st Hiko Sentai are dispatched on their 3rd mission, followed by the reconstituted Kido Butai.

Kido Butai
Kongo II class Battlecruiser: Fuso, Yamashiro
Akagi II class Carrier: Hiryu, Kaga, Shokaku, Soryu
Nagara II-Ro class Light Cruiser: Kashima, Kashiwara, Ōyodo, Sendai
240x Mitsubishi A1M Fighter

29th July 1969
Full communications are established with the Hadano aliens, which refer to themselves as the People's Republic of Xiama. As a species, they are known as the Xiamen. They are grey-skinned, hairless and humanoid in overall shape, with fangs in an elongated jaw, menacing yellow eyes and large ears. They have the overall appearance of a ferocious rodent. With a Hosho class diplomatic ship now on the scene, diplomatic relations are established. So far, the Xiamen have shown no inclination to leave the jump point or bring additional ships into Hadano, but that might change. There is an urgent need for more intelligence. In Sol, the second Kasagi class light cruiser, Takasago (literally High Sand, but also a famous play), joins the Imperial Japanese Navy.



6th August 1969
Two new ships from the Covenant of Velsharoon appear at the Minato – Proxima jump point: a 68,469-ton Dhamar with a commercial engines and a military-engined 16,270-ton Sidon. Imperial Navy Intelligence theorises that this may be a stabilisation ship with escort.

16th August 1969
With the Kido Butai at the Sirius jump point, the twenty-four Mitsubishi G1M 'Donryu' long range strike craft launch their third attack on the Zuijin Devastator in Kapteyn’s Star. This time the defences are weakened and most of the Rakurai make it through the defensive missiles. Just before impact, Japanese sensors detect twenty-two strength-1 energy impacts, probably from the Terror class base, and two strength-18 energy impacts, confirming the presence of particle lances on the planet. The Devastator has no more decoys and is blown to pieces by thirty-six hits. With the Devastator eliminated, albeit at the cost of one hundred and forty-four anti-ship missiles with the same total build cost as a Nagara II light cruiser, the Kido Butai can move in much closer to the planet.

24th August 1969
A probe of a recently discovered jump point in Iwakura, five transits from Sol and two beyond Mitaka, reveals a connection to Yao, a system adjacent to Hadano. The galactic map is becoming ever more complex. On the positive side, the survey cruiser Sagiri can now move through Hadano into Kaizu and assist the search for Xiamen and Velsharoon systems.

25th August 1969
The Kido Butai moves within half a million kilometres of Kapteyn’s Star I without any resistance. According to Imperial Naval Intelligence, the known range of the Zuijin particle lances is 240,000 km, so Kaigun-Taisa Haruguchi orders two of his light cruisers move to 245,000 km and open fire on the Terror class base. The attack results in only a few strength-1 hits, but there is no return fire. Haruguchi orders the other two light cruisers and the two Kongo II class battlecruisers to join the attack. At the chosen range, the 25cm lasers of the Kongos inflict three times the damage of the 20cm lasers of the light cruisers.

The tactic is expensive in terms of maintenance supplies, needed to keep all their weapons firing, but far less expensive than risking warships inside the range of the deadly particle lances. The first armour penetration occurs after four minutes of continuous fire. A further eight minutes of fire is required before the Zuijini base finally explodes. The six warships have used between twenty and forty percent of their maintenance supplies. With the Terror eliminated, the carriers launch their two hundred and forty fighters to attack the surface-based particle lances.

Six fighters are lost as soon as they enter Zuijin weapon range and three more before the reach the planet. After that point, their vastly superior numbers and fire rate are decisive. Every single particle lance is strafed into oblivion before they can fire again. A small ground forces signature of 1600 tons remains: most likely a guard force for the surface-to-orbit weapons.

15th September 1969
With the survey of Minato almost complete, Fubuki finds a stable jump point three point five billion kilometres from the Proxima jump point. She transits and discovers an orange K0-V star with six planets, six moons and a scattering of asteroids. The third planet has a nitrogen – oxygen atmosphere that is almost breathable. Liquid oceans cover fifty-eight percent of the surface. The surface temperature is -25C and the dominant terrain is Taiga. The jump point, devoid of any Velsharoon ships, is only one point seven billion kilometres from the star so Fubuki immediately launches a Gekko reconnaissance drone. There is no sign of life.

Daigensui-Kaigun-Taisho Takagi Razan orders Kaigun-Taisho Nagata, commander of the Imperial Navy’s combat forces, to take and hold the near-habitable planet. Any required support ships, freighters and colony ships will be made available. The system is an ideal location for the choke point strategy devised by Takagi, so due to its importance it is named Truk, after the base that was the foundation of the modern Imperial Japanese Navy.

16th October 1969
The survey cruiser Yugiri locates a stable jump point in Truk and moves to investigate. The system beyond is a planetless K2-V star. Based on the naming of Truk, Imperial Naval Intelligence has decided that the nomenclature for all future systems in the chain will be Pacific islands. The empty system is named Palau. Yugiri returns to Truk to continue the survey there.

22nd November 1969
The survey cruiser Sagiri probes a jump point in the Kaizu system, beyond the contact system of Hadano. She enters a planetless white dwarf system and encounters a new type of Xiamen ship - 7714 tons and designated as Jinan class - stationed on the Kaizu jump point. As both Xiamen and Velsharoon ships were encountered in Hadano, Imperial Naval Intelligence decides to continue the Pacific island theme. The white dwarf system is named Makin. Sagiri begins to survey, leaving Amagiri to complete the survey in Kaizu.

11th December 1969
The conversion of New Osaka into a colony of the Empire of Japan is complete. All of the indigenous Rasheed are now at work in four hundred and seventy-four labour camps, fifteen of which are construction camps and the rest are mining camps. One hundred and fifty construction factories and two hundred and forty-two mines are also at the colony. The Japanese population is forty-seven million. New Osaka is an ocean world with only half a percent of the surface available to colonise. Therefore, three Amateratsu class terraforming stations are slowly removing water vapour from the atmosphere to increase the surface area.

24th December 1969
The 5th Division lands on Kapteyn’s Star I to eliminate the remaining Zuijin ground forces. There are approximately five hundred of the standard robotic troops, but only a limited number of the larger mechs. The battle lasts less than two days before all the Zuijin forces are wiped out. Six hundred Japanese troops are killed.

26th December 1969
A colony of one million is established on Truk III. The planet does not possess any mineral resources, but its strategic location on the only approach to Minato and Proxima is vital. An Imperial Navy base here can push the point of contact two transits further away from Sol. Truk III is near-habitable, so a terraforming station is already in orbit.

16th January 1970
A Medina class ship of the Covenant of Velsharoon is detected in Makin. Once again, Xiamen and Velsharoon ships are co-existing in a system, so it is difficult to tell the relationship between them, or who claims the system.

22nd January 1970
All light cruisers of the Nagara, Nagara II and Sendai classes, twenty-seven ships in total, have been refitted to the Nagara II-Ro class. A twenty-eighth ship, Niikata, is under construction. Many of the components being used to build the new ship were recovered from the wrecks of the two battlecruisers lost in the Battle of Kochi.

Nagara II-Ro class Light Cruiser      18,000 tons       600 Crew       2,847.9 BP       TCS 360    TH 1,800    EM 0
5000 km/s      Armour 6-61       Shields 0-0       HTK 117      Sensors 10/16/0/0      DCR 10-5      PPV 108
Maint Life 2.05 Years     MSP 1,488    AFR 259%    IFR 3.6%    1YR 472    5YR 7,073    Max Repair 450 MSP
Troop Capacity 500 tons     Boarding Capable   
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Koga-Murakama KM-900-B Ion Drive  (2)    Power 1800    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 789,500 Litres    Range 17.5 billion km (40 days at full power)

Kentaro-Sakura KS-20A Ultraviolet Laser (12)    Range 256,000km     TS: 5,000 km/s     Power 10-3.5     ROF 15       
Takashi Kinetics TK-10A Railgun (12x4)    Range 10,000km     TS: 5,000 km/s     Power 3-3     ROF 5       
Type 27 Go-31C Laser Fire Control (2)     Max Range: 256,000 km   TS: 5,000 km/s    ECCM-2   
R-40 Magnetic Mirror Fusion Reactor (2)     Total Power Output 80    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-11B Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 8 Go-51A Passive Sensor (1)     Sensitivity 10     Detect Sig Strength 1000:  25m km
Electronic Warfare Jammers:   Fire Control 1    Missile 2   

Ground Forces
1x Naval Landing Force

5th February 1970
Amagiri finds a second new jump point in Kaizu and investigates. There is a Xiamen diplomatic ship on the Kaizu side of the jump point and a Velsharoon diplomatic ship on the far side, in a red dwarf system with a single Venusian world. There is still no way to determine the layout of their respective territories and no sign of a link between the systems beyond Hadano area and the systems around Truk, where only Velsharoon ships have bene detected. The system discovered by Amagiri is named Eniwetok.

15th February 1970
Newly emplaced sensor buoys on the Kaizu – Makin jump point detect two groups of Xiamen ships. The first comprises a Zhanjiang of 20,000 tons with commercial engines, escorted by a military-engined Han class of 16,565 tons. They are detected moving toward the Makin side, then transit into Kaizu and set course for the Eniwetok jump point. The second group arrives four hours later, following the first, and comprises a Ming class of 26,850 tons, a Nanchang of 18,000 tons and two Kaifeng class ships of 13,262 tons. Only the Nanchang has commercial engines. These are the first substantial Xiamen forces to be detected. Whether they are heading home or somewhere else is unknown, but both Makin and Eniwetok will be surveyed in due course.

19th February 1970
Fubuki probes a second stable jump point in Truk. She enters a binary of two yellow-white F7-V stars with a total of five planets. Three are Venusian worlds and the other two are barren, hot worlds. The system is named Samoa. There is still no sign of any Velsharoon populations.

11th March 1970
The survey cruiser Shirayuki discovers a ruined outpost on the ex-Zuijin planet Kapteyn’s Star I.

1st April 1970
A pair of Xiamen ships, a 13,262-ton Kaifeng and a commercial-engined, 68,855-ton Xian arrive at the Hadano – Yao jump point, detected by a recently-emplaced sensor buoy. INI designates the Xian as a possible stabilisation ship, which means the Xiamen have survey ships in Hadano that have identified the jump point. Yao is three jumps from Sol via Lalande and Okami. Unfortunately Hadano has no planets and neither does the first outward system, Kaizu, so there are no chokepoints in which to establish a base. The two routes inward from Hadano are Sakura, which has a small colony, and Yao, which is also planetless and has three further inward jump points to Lalande, Kobe and Iwakura, all of which eventually lead to Sol. Trying to establish large colonies to claim control over all the existing routes within Japanese space would be difficult and expensive and detract from the urgent need to establish mining colonies. The only realistic option is to find the core systems of the People’s Republic of Xiama and create a choke point closer to the source of their ships.
 

Offline Steve Walmsley (OP)

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Re: Empire of the Stars - Updates Thread
« Reply #5 on: June 25, 2024, 09:05:13 AM »
2nd April 1970
Sagiri finds the first outward jump point in Makin. To avoid slowing the survey, the jump-capable light cruiser Kasagi is ordered to leave her picket position on the Hadano – Kaizu jump point, leaving the Nagara II-Ro class light cruiser Abukuma to monitor it alone, and proceed through Kaizu to Makin. As she approaches the new jump point, she detects emissions from two units of a new Xiamen class, designated as Zunyi, then from two units of a new Velsharoon class, designated as Ankara.

As she moves into active sensor range, she detects a total of four ships from the People’s Republic of Xiama and eight from the Covenant of Velsharoon. In addition to the two Zunyis, which are 26,500 tons, the Xiamen have a 26,850 ton Ming and a 13,262-ton Kaifeng. The eight Covenant ships include two 16,270-ton Sidon class, four 16,184-ton Ankara class and two 8147-ton Salt class. The Sidon and Ankara class ships have shields of strength-61 and strength-55 respectively, a technology yet to be deployed on Imperial warships. The gathering of such a large group of ships from the two alien races suggests the system beyond may be important.



Kasagi transits the jump point and arrives in a red dwarf system with six planets and almost fifty moons. The second planet is a huge, super-terrestrial world divided in equal proportions between oceans and jungle-covered mountains. The gravity of 2.4G is well above human tolerance, as is the 5.8 atm pressure of the nitrogen – oxygen atmosphere. The surface temperature is 71C. Four wrecks are scattered across the inner system, including a Xiamen Han class. The others are of unknown types between 8,000 and 10,000 tons. A fifth wreck, a Xiamen Houxin class of 13,287 tons, is on Kasagi’s entry jump point.

Of far more immediate importance is the squadron of four Zuijin warships at point-blank range, one of which is already launching missiles. All four types have previously been observed in Kagoshima and Takahama: a 19,287-ton Ravager with forty-two light missile launchers, and three smaller ships of the Impaler, Razor and Hunter classes, with unknown armament. Kasagi’s captain, Kaigun-Chusa Kido Hoshi, orders his helmsman to come about and transit as soon as jump shock wears off, then orders his tactical officer to target the Hunter with everything and fire as soon as possible. While that ignores the incoming light missiles, his natural inclination is toward offensive action and the Zuijin are at point-blank range.

Kasagi class Light Cruiser      18,000 tons       546 Crew       3,382.3 BP       TCS 360    TH 1,800    EM 0
5000 km/s    JR 3-50      Armour 6-61       Shields 0-0       HTK 109      Sensors 10/16/0/0      DCR 10-5      PPV 97.28
Maint Life 2.32 Years     MSP 2,174    AFR 259%    IFR 3.6%    1YR 550    5YR 8,251    Max Repair 450 MSP
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Komatsu KMJ-180 Jump Drive     Max Ship Size 18000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-900-B Ion Drive  (2)    Power 1800    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 787,500 Litres    Range 17.5 billion km (40 days at full power)

Kentaro-Sakura KS-25A Far Ultraviolet Laser (4)    Range 256,000km     TS: 5,000 km/s     Power 16-4     ROF 20       
Twin Kentaro-Sakura KS-12A Turret (6x2)    Range 200,000km     TS: 16000 km/s     Power 8-8    ROF 5       
Type 27 Go-31C Turret Fire Control (1)     Max Range: 64,000 km   TS: 16,000 km/s    ECCM-2   
Type 27 Go-31C Laser Fire Control (2)     Max Range: 256,000 km   TS: 5,000 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (2)     Total Power Output 71.6    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-11B Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 28 Go-71B Fighter Detection (1)     GPS 160     Range 13.8m km    Resolution 10
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 8 Go-51A Passive Sensor (1)     Sensitivity 10     Detect Sig Strength 1000:  25m km
Electronic Warfare Jammers:   Fire Control 1    Missile 2   



Five seconds after transit, Kasagi is struck by thirty-nine light missiles. The deepest penetration is two-thirds of her armour. The Zuijin ships head away from the jump point at 5807 km/, with the other three ships still not firing. At fifteen seconds Kasagi is hit with forty more light missiles, but her armour continues to hold. She returns fire, hitting the Hunter with three 25cm lasers and six 12cm lasers at 87,000 km, albeit without armour penetration. Kasagi’s helmsman gleefully announces the jump engines are back online and the damaged light cruiser transits into Makin, with her crew surprised to have survived. With the excitement over, the new system is officially named Tarawa.

The gathering of ships from the People’s Republic and the Covenant is apparently due to hostilities with the Zuijin. In astrographic terms, it means that the Makin - Tarawa jump point is extremely unlikely to be the direction of either of their home systems, although the jump point is stable on both sides. After reporting the incident,  Kaigun-Chusa Kido is ordered to maintain position until relieved, as Kaigun-Taisho Nagata wants as much intelligence as possible on the activities of all three alien races. Matushima (named after Matsushima Bay – literally Pine Island), the third Kasagi class light cruiser, will be launched in three weeks, and will take over the role of Kasagi in probing new jump points beyond Kaizu. The second Kasagi class, Takasago, is in Kapteyn’s Star, providing jump point capability until the jump point to Sirius can be stabilised.

5th April 1970
In Makin, another Xiamen squadron, comprising a Ming, Nanchang and two Kaifengs, approaches the Kaizu jump point. Their approach vector does not line up with the Tarawa jump point and system is planetless, so there is likely to be another jump point in Makin that is the source of the Xiamen ships. However, why Xiamen ships keep transiting from Makin and heading across Kaizu to Eniwetok remains a mystery.



6th April 1970
In Eniwetok, a sensor buoy recently emplaced by a Kawanishi H1K 'Saiun' detects the largest fleet yet seen from the People’s Republic of Xiama: sixteen military-engined ships of 16,589-tons, split between three new classes – six Chongqing, six Huangwen and four Hainan. Eniwetok has a single planet, but its location does not match the fleet’s approach vector toward the jump point. The fleet transits into Kaizu and then transits back a day later. Alien activity in the systems beyond Hadano is rapidly increasing.

28th May 1970
Kagoshima is two transits from Sol via Tsushima and the first system in which the Zuijin were encountered. As this Zuijin fleet is by far the largest known, the Zuijin have a significant technological advantage and they seem content to remain in their own systems, Kagoshima has been left alone, except for a gravitational survey and a sensor buoy emplaced on the Tsushima jump point. The survey found a single outward jump point to Sapporo, an F-class star with seven planets, and beyond that system’s sole outward jump point, a black hole.

The sensor buoy detects six strength-3 energy impacts, outside the orbit of the fifth planet and in the general direction of the Sapporo jump point. The Zuijin are apparently engaged with an unknown opponent. The Tsushima – Kagoshima jump point has not been stabilised, so a jump-capable ship is required. All three Kasagi class ships are active elsewhere and the four battlecruisers are too large for this mission. Besides, the immediate need is intelligence not combat. Kaigun-Taisho Nagata orders that as soon as one of the four Kawanishi H1K 'Saiun' patrol craft completes their current mission of deploying buoys in the area around Hadano, it should be armed with reconnaissance drones and dispatched to Kagoshima.

Twenty-five minutes later, seven more energy impacts are detected. After a further twenty-minutes, there are sixteen impacts and the wreck of a unknown ship of 9006 tons is detected. The wreck is almost on a direct line from the Zuijin planet to the Sapporo jump point. It would appear that yet another alien race is moving closer to Sol.

24th June 1970
A Kawanishi H1K 'Saiun' arrives in Kagoshima and launches two Shusui (Autumn Water) Reconnaissance Drones, one at the third planet and the other at the wreck. This is the first test of the new drone, which is fifty percent larger than the Gekko and has increased range and improved capabilities. The first Shusui confirms the presence of the large Zuijin fleet detected nine years earlier. There are five bases: a Vanquisher missile base, two Devastator light missile bases and two Terror point defence bases. The ships include three 28,907-ton Vengeance class, two Ravager light missile cruisers, three Conquerors of 19,164 tons, seven smaller ships of approximately 9600 tons and four Ghost class fast attack craft. There will very likely be substantial ground forces present, but the drone is destroyed before it can detect them. For now, the Imperial Japanese Navy would find it very difficult to overcome such a powerful Zuijin fleet. The second drone finds nothing at the wreck site.



1st July 1970
The first pair of Omurosan Maru class freighters are constructed at the Ashikaga Shipyard. Each Omurosan Maru has five times the capacity of the existing Kansai Maru freighters and will greatly improve the ability of the Empire of Japan to build up its colonies.

Omurosan Maru class Freighter      231,264 tons       925 Crew       3,054.8 BP       TCS 4,625    TH 9,300    EM 0
2010 km/s      Armour 1-335       Shields 0-0       HTK 270      Sensors 5/8/0/0      DCR 1-0      PPV 0
MSP 8    Max Repair 200 MSP
Cargo 125,000    Cargo Shuttle Multiplier 15   
Kaigun-Shōsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   

Koga-Murakama KC-300 Ion Drive  (31)    Power 9300    Fuel Use 2.89%    Signature 300    Explosion 4%
Fuel Capacity 2,500,000 Litres    Range 67.3 billion km (387 days at full power)

Type 27 Go-13C Navigation Sensor (1)     GPS 1920     Range 31.5m km    Resolution 120
Type 26 Go-63B Passive Sensor (1)     Sensitivity 8     Detect Sig Strength 1000:  22.4m km
Type 8 Go-53A Passive Sensor (1)     Sensitivity 5     Detect Sig Strength 1000:  17.7m km

7th July 1970
The gravitational survey of Truk is completed. The only outward jump points discovered are those to Palau and Samoa, neither of which has any populations. The three survey ships committed to this area split and move into the two systems. The colony on Truk III has reached a population of three point six million and can support up to 142,000 tons of warships, mainly through the deployment of two Yokosuka class maintenance bases. Two light cruisers are based at the colony. On the surface is the 7th Division and two shore battery formations with a total of sixteen 25cm lasers and twenty railguns. Like its historical namesake, Truk is developing into a key base for the Imperial Japanese Navy

Yokosuka class Maintenance Base      183,590 tons       1,816 Crew       4,200.6 BP       TCS 3,672    TH 0    EM 0
1 km/s      No Armour       Shields 0-0     HTK 237      Sensors 5/8/0/0      DCR 1-0      PPV 0
MSP 14    Max Repair 100 MSP
Kaigun-Shōsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   
Maintenance Modules: 36 module(s) capable of supporting ships of 57,600 tons

Type 27 Go-13C Navigation Sensor (1)     GPS 1920     Range 31.5m km    Resolution 120
Type 26 Go-63B Passive Sensor (1)     Sensitivity 8     Detect Sig Strength 1000:  22.4m km
Type 8 Go-53A Passive Sensor (1)     Sensitivity 5     Detect Sig Strength 1000:  17.7m km

17th July 1970
In Makin, which connects to Kaizu and the Zuijin system of Tarawa, Sagiri discovers another stable jump point. The Kasagi class light cruiser Matsushima has arrived in Makin to replace her damaged sister ship, so she moves to the new jump point and transits into a binary system, designated as Kwajalein. The primary is an F8-V yellow-white star orbited by four terrestrial planets and a small gas giant with three moons. The third planet and fifth planets, both about the size of Mars, have thin nitrogen – oxygen atmospheres and stable orbits. The former has oceans and a temperature of 74C, while the latter is much colder at -96C and has ice sheets covering a third of the surface.

The companion star is a red dwarf in a highly eccentric orbit, moving between two billion and forty billion kilometres from the primary during an orbital period of fifteen hundred years. It is currently at twenty billion kilometres. Orbiting the dwarf star are three terrestrial worlds, a gas giant, a superjovian with more than twice the mass of Jupiter, forty moons and almost five hundred asteroids. The innermost planet has a thin nitrogen – oxygen atmosphere, a minimal hydrosphere and an eccentric orbit, moving between eight and forty million kilometres from its star every six weeks. The superjovian has a Lagrange point, but there is no matching Lagrange point orbiting the primary.

By far the most interesting object in the system is the wreck of a 7,758-ton Xining class ship of the People’s Republic of Xiama, located just outside the orbit of the primary’s fourth planet, in the generation direction of the jump point through which Matushima has just entered the system. Matsushima’s captain, Kaigun Chusa Masuko Machi, considers heading in-system to investigate, but suspects this may be another Zuijin-held system. He contacts Sagiri and requests that the survey ship enters Kwajalein to launch drones.



31st July 1970
Eniwetok is still the scene of significant Xiamen activity, with a sixteen ship fleet regularly entering and leaving the system via the Kaizu jump point. The survey cruiser Murakumo is conducting a gravitational survey and has discovered a single jump point so far. She moves to the jump point to conduct a probe, where she finds a Xiamen Jinan class on station. Murakumo transits, emerging over eight billion kilometres from a giant K5-III star two hundred and forty times brighter than Sol. Following the Pacific islands nomenclature for Xiamen and Velsharoon space, the new system is designated as Guadalcanal.

The giant star has seven planets, four of which have nitrogen-oxygen atmospheres. Guadalcanal III is almost a twin of Earth, with a stable orbit, a diameter of 12,000 km, gravity of 0.96G, temperature of 14.3C, oceans covering 61% of the surface and 0.22 atm of oxygen in the atmosphere. This is the first ideal habitable world discovered by Japanese explorers. Guadalcanal II is a hot desert world with minimal hydrosphere. The surface temperature of 98C will increase in the short term as it is moving towards its perihelion of a billion before its twelve-year orbit takes it out to one point six billion.

Guadalcanal IV and V are cold worlds dominated by rift valleys. They both have ice sheets covering seventy percent of their surfaces and their temperatures are -96C and -83C respectively. Guadalcanal IV has the denser atmosphere but with only trace amounts of oxygen. Guadalcanal V has an atmosphere that is close to breathable, except for 0.09 atm of sulphur dioxide currently frozen out on the surface. Murakumo temporarily abandons her survey of Eniwetok and heads in-system, surveying as she goes, with the intention of launching Gekko reconnaissance drones at the four planets with oxygen atmospheres.



3rd August 1970
Sagiri arrives in Kwajalein to rendezvous with Matsushima and launches a pair of Gekko reconnaissance drones at the third and fifth planets. The drone targeted on the third planet detects Devastator and Terror class bases in orbit, along with four ships: a 19287-ton Ravager class light missile cruiser, plus a Hunter, an Impaler and a Razor, all of which are 9,628 tons. There is no sign of life at the fifth planet. The presence of the Zuijin explains the Xiamen wrecks in Kwajalein, but also means that both outward jump points discovered in Makin so far lead to Zuijin-held system. Sagiri transits back into Makin to continue her survey.

12th August 1970
A Kawanishi H1K 'Saiun' has deployed buoys at either side of the Kagoshima - Sapporo jump point, in an attempt to determine the origin of the ship recently destroyed by the Zuijin in Kagoshima. Only days after the buoys are emplaced, the one on the Sapporo side detects a 6,127-ton ship, designated as Sekhmet class, from a previously unknown alien race. This new race is less of an immediate threat than the Scimitar Empire, Covenant of Velsharoon or the People’s Republic of Xiama, because a powerful Zuijin fleet is occupying the Kagoshima system, the only route from Sapporo into the Empire of Japan. Even so, its strength and capabilities must be determined, so as soon as a survey ship can be made available, Sapporo will be resurveyed to check for any previously dormant jump points and a survey will be conducted in the Black Hole system beyond Sapporo. Eleven hours after being detected, the Sekhmet transits into Kagoshima and is detected by the buoy on the far side.

The Empire of Japan has now encountered six alien races – possibly seven if the wreck in Kapteyn’s Star did not belong to one of the known races. Of those six, the Rasheed have been subjugated, the Zuijin pose no offensive threat and the Scimitar Empire remain quiet behind the Tsushima – Scimitar jump point. No Scimitaran ship has transited into Tsushima for over seven years and the jump point picket has slowly been reduced, now standing at three light cruisers. The People’s Republic of Xiama has a single point of contact with the Empire in the Hadano system and has been detected in Kaizu, Makin and Eniwetok. The Covenant of Velsharoon has two points of contact, in Hadano and Proxima, and have been detected in the same systems as the Xiamen, plus Minato, Proxima and Truk. So far, the latter two races have maintained peaceful relations with the Empire of Japan.



Offline Steve Walmsley (OP)

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Re: Empire of the Stars - Updates Thread
« Reply #6 on: June 25, 2024, 09:54:19 AM »
23rd August 1970
A second ship of the Sapporo aliens, 7,211 tons and designated as Thoth class, arrives at the Sapporo Kagoshima jump point

15th September 1970
With the detection of the new aliens in Sapporo, it seems very likely that the wreck in Kagoshima is one of their ships. Therefore, the salvage ship Kasashima Maru, accompanied by a freighter, transits into Kagoshima to salvage the wreck, with the intention of giving the Zuijin ships in orbit of Kagoshima III a wide berth. Unfortunately, the staff officers issuing the orders from Combined Fleet Headquarters overlook the orbit of Kagoshima III, which passes within twenty million kilometres of the Tsushima jump point. Although the Zuijin world is still three hundred and seventy million kilometres away, that is apparently close enough for planetary-based sensors to detect the transit. As Kasashima Maru moves away, the entire mobile Zuijin fleet in the system approaches the jump point. The sensor buoy that detected that approach is destroyed by the Zuijin.



Kasashima Maru and the freighter continue moving away, but detect sensor emissions in their wake. Just when it seems the Zuijin will catch them, the emissions begin moving away. The relief doesn’t last long as they detect missiles closing fast. The freighter is hit by eight laser torpedoes with strength-3 warheads and loses two engines. A second salvo twenty minutes later hits Kasashima Maru, damaging two of her four salvage modules. The two ships split up and try to run but they cannot escape. More salvos arrive every twenty minutes until both ships are reduced to tumbling debris.

28th September 1970
A Gekko reconnaissance drone from Murakumo enters orbit of Guadalcanal III, where it detects a very large population and a huge fleet of ships from the People’s Republic of Xiama. The population's thermal signature is almost fifty percent larger than Earth, there is a large shipyard complex in orbit and on the surface is a ground forces signature of 250,000-tons. Given the dominant terrain is forested mountain, the actual size of the ground force is likely to be several multiples of the signature. Guadalcanal III is almost certainly the Xiamen home world.

The fleet in orbit contains the following ships:
6x Changsha: 76,771 tons
16x Houjian: 39,884 tons
4x Luda: 33,359 tons
2x Song: 33,349 tons
4x Jianghu: 26,775 tons
4x Yinchuan: 26,740 tons
19x Ming: 26,580 tons, military engines
27x Xia: 19,782 tons
2x Nanchang: 18,063 tons, commercial engines
2x Han: 16,565 tons, military engines
18x Kaifeng: 13,262 tons, military engines
1x Zhuhai, 12,098 tons, military engines
12x Jiangwei: 956 tons
48x Taiyuan: 915 tons

Now that the location of the Xiamen home world is known, Daigensui-Kaigun-Taishō Takagi Razan can consider how to employ his choke-point strategy. Unfortunately, there are still no good candidate systems for a population sufficient to claim sovereignty. Eniwetok has a single Venusian world, and is adjacent to Guadalcanal, which would probably increase tension. Kaizu and Hadano are both planetless and beyond Hadano there are so many potential routes to Sol that as many as six systems would need substantial populations. Therefore, Daigensui-Kaigun-Taishō Takagi declares that the Empire of Japan must find a way to establish a population at one of the five small comets in Hadano. There is insufficient space on the surface of the comets, so the Empire will prioritise the development of orbital habitats.

29th September 1970
Gekko reconnaissance drones arrive at Guadalcanal II and IV. The former appears to be deserted. The latter has a fleet in orbit comprising six Qingdao class of 109,000 tons, eighteen Jinzhou at 82,000 tons and three Ming class with military engines at 26,580 tons. There is no population signature. Murakumo sets a course close to the star, with the intention of moving through the inner system undetected to get close enough to launch a drone at the sixth planet, which is seven billion kilometres away.



20th October 1970
Sagiri finds a fourth jump point in Makin. The other three lead to Kaizu and the Zuijin systems of Tarawa and Kwajalein. Sagiri puts her survey of Makin on hold and transits the new jump point. She emerges in the known system of Palau, adjacent to Truk and three transits from Proxima, where her sister ship Yugiri is at work. This new connection links the two areas of space in which the Covenant of Velsharoon has been encountered. Sagiri returns to Makin to complete her survey.



23rd October 1970
Asagiri transits a newly discovered jump point in Samoa, adjacent to Truk. She emerges in a system with an orange K0-V primary, eight planets, sixty-four moons and over three hundred asteroids. The third planet has a thin nitrogen – oxygen atmosphere, liquid oceans and surface temperature of 14C. On the entry jump point, which is not stabilised, are two Velsharoon ships – a 68,489-ton commercial-engined Dhamar and a 16,270-ton Sidon with military engines. Given the Samoa side is stabilised and this is the second time the Dhamar/Sidon combination has been detected in a similar situation, Imperial Naval Intelligence designates them as a stabilisation ship and an escort cruiser. The new system, designated as Fiji, is unlikely to be in the direction of the Covenant home world as the stabilisation ship will very likely be moving away from it. Asagiri returns to Samoa to continue her survey in conjunction with her sister ship Fubuki.

26th October 1970
An Aichi E1A scout transits from Tsushima into Kagoshima to check if the Zuijin are still close to the jump point. The scout detects three 19,164-ton Conqueror class and one Avenger class escort on the jump point, plus an Impaler, a Razor and a Hunter at twenty million kilometres. The three Conquerors open fire with nine particle lances each, completely obliterating the small scout. This is the first time the Conquerors have been observed in action, so INI classifies them as light cruisers and issues a warning to all Imperial Navy ships to treat them as a deadly threat.

11th November 1970
New Osaka, adjacent to Sol and home world of the Rasheed, has a human population of fifty-four million. With two hundred and eighty mines and four hundred and fifty-nine forced labour mining camps, it has surpassed the mineral production of Earth. The home world of humanity faces rapidly dwindling mineral deposits and shortages of both Duranium and Gallicite. The Osaka system has three jump points, connecting to Earth, Tosa and Shōbara. Tosa is part of several different loops involving Earth, via Osaka, Hakodate or Sakai. Shōbara is the first in a chain of three systems, that includes Miyoshi and Sigma Draconis, and also has an unexplored jump point.

The survey cruiser Oboro is in Sigma Draconis, working its way around the system’s asteroid belt, when it detects thermal emissions from an alien ship of a new race. Oboro engages her active sensors and detects seven ships in total. A 20,903-ton Orca and an 11,130-ton Barracuda are five million kilometres away, in orbit of an asteroid. A further four million kilometres away are two more Barracudas and three 19,237-ton Hammerheads, opening the range to Oboro at 2112 km/s. The Barracuda and Hammerhead class ships have military engines. The Orca is not moving. This is the seventh alien race to be encountered in less than eleven years.



Oboro hails the alien ships but there is no answer, so she changes course to head back toward the jump point and requests backup from warships. This new encounter is of particular concern because it is only three jumps from Osaka, with nothing in-between. Earth and Osaka are the only systems that the Empire of Japan cannot afford to lose; the former because of the factories, shipyard and massive population and the latter because of its mines and labour camps. A pair of Nagara II-Ro class light cruisers are already in orbit of New Osaka, but they will remain as a guard force. Instead, the Kido Butai is reformed as a force of two battlecruisers, two carriers and four light cruisers and dispatched to Sigma Draconis

21st November 1970
A ship of the People’s Republic of Xiama transits into Yao from Hadano. The Xiamen are now three transits from Sol via Lalande and Okami. An appropriate solution to what has become known as the Hadano Problem is becoming more urgent.

22nd November 1970
Oboro arrives at the Sigma Draconis – Miyoshi jump point. She will remain there as a jump point picket until a more substantial force is available.

28th November 1970
Murakumo launches a drone at Guadalcanal V, the fourth and final planet in the Xiamen home system with an oxygen atmosphere. There is no sign of life. Murakumo starts working her way back to the Eniwetok jump point, surveying where she can.

29th November 1970
The carrier Taihō (Great Phoenix), the largest warship ever constructed by the Empire of Japan, is launched from the Yokosuka Dockyards in Earth orbit. Her strikegroup comprises thirty-six Mitsubishi A2M2 'Shinden' Fighters, thirty-six Nakajima B1N 'Ryūsei' (Shooting Star) Carrier Strike craft, a new design armed with a pair of fixed missile launchers, and a pair of Aichi E1A3 scouts. As well as being larger than the preceding Akagi class, Taihō is the first Japanese design with an internal magazine, which allows her to reload her Nakajima B1Ns. The Taiho class gives the Imperial Navy a long-range strike capability, beyond that provided by the planet-based Mitsubishi G1M 'Donryu'.

Taihō class Carrier      54,000 tons       927 Crew       6,473.4 BP       TCS 1,080    TH 5,400    EM 0
5000 km/s      Armour 1-127       Shields 0-0       HTK 237      Sensors 5/8/0/0      DCR 30-5      PPV 0
Maint Life 2.46 Years     MSP 7,247    AFR 778%    IFR 10.8%    1YR 1,649    5YR 24,739    Max Repair 450 MSP
Hangar Deck Capacity 24,000 tons     Magazine 867 / 0   
Kaigun-Taisa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 3 months    Flight Crew Berths 480    Morale Check Required   

Koga-Murakama KM-900-B Ion Drive  (6)    Power 5400    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 2,933,000 Litres    Range 21.7 billion km (50 days at full power)

Rakurai Anti-ship Missile (72)    Speed: 31,250 km/s    Range: 8m km    WH: 12    Size: 12    TH: 125/75/37

Type 28 Go-71B Fighter Detection (1)     GPS 160     Range 13.8m km    Resolution 10
Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 27 Go-11C Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 8 Go-53A Passive Sensor (1)     Sensitivity 5     Detect Sig Strength 1000:  17.7m km
Type 26 Go-63B Passive Sensor (1)     Sensitivity 8     Detect Sig Strength 1000:  22.4m km
Electronic Warfare Jammers:   Missile 2   

Strike Group
36x Nakajima B1N 'Ryūsei' Carrier Strike   Speed: 10001 km/s    Size: 7.5
36x Mitsubishi A2M2 'Shinden' Fighter   Speed: 12002 km/s    Size: 5.5
2x Aichi E1A3 Scout   Speed: 7502 km/s    Size: 5

Nakajima B1N 'Ryūsei' class Carrier Strike      375 tons       1 Crew       61.3 BP       TCS 7    TH 75    EM 0
10001 km/s      Armour 1-4       Shields 0-0       HTK 3      Sensors 0/0/0/0      DCR 0-0      PPV 3.6
Maint Life 2.07 Years     MSP 25    AFR 75%    IFR 1.0%    1YR 8    5YR 117    Max Repair 37.5 MSP
Magazine 24 / 0   
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 0.6 days    Morale Check Required   

Koga-Murakama KM-75-DB Ion Engine (1)    Power 75    Fuel Use 722.96%    Signature 75    Explosion 20%
Fuel Capacity 7,300 Litres    Range 0.48 billion km (13 hours at full power)

Type 23 Fixed Missile Launcher (2)     Missile Size: 12    Hangar Reload 173 minutes    MF Reload 28 hours
Type 26 Go-44B Missile Fire Control (1)     Range 19.9m km    Resolution 120   ECCM-1
Rakurai Anti-ship Missile (2)    Speed: 31,250 km/s    End: 4.3m     Range: 8m km    WH: 12    Size: 12    TH: 125/75/37

Type 28 Go-14B Small Strike Sensor (1)     GPS 192     Range 10m km    Resolution 120

12th December 1970
The Kido Butai arrives in Sigma Draconis and holds position at the Miyoshi jump point. An Aichi E1A scout is sent in-system to the last known location of the alien ships.

Kido Butai
Kongo II class Battlecruiser: Fuso, Yamashiro
Akagi II class Carrier: Hiryu, Soryu
Nagara II-Ro class Light Cruiser: Kashima, Kashiwara, Katori, Niyodo
120x Mitsubishi A1M 'Raiden' class Fighter:
4x Aichi E1A class Scout:

Meanwhile in Kagoshima, the recently emplaced sensor buoy on the Kagoshima – Sapporo jump point detects the approach of six Zuijin vessels, including three 28,907-ton Vengeance class ships. A small number of ships from the unknown alien race first detected in Sapporo have passed into Kagoshima, so it may have attracted the attention of the Zuijin, although the Sapporo jump point is almost seven billion kilometres from the star so detection at that range is highly unlikely. Perhaps, the recent activity of the Sapporo aliens and the Imperial Navy in Kagoshima have caused the Zuijin to deploy defence forces at both jump points. Once the Zuijin are within a million kilometres of the jump point, a pair of light missiles from a Ravager escort cruiser destroy the sensor buoy. The Empire of Japan is now blind to events in Kagoshima.

17th December 1970
The Aichi E1A scout from the Kido Butai arrives at the asteroid where the aliens were encountered several weeks earlier, finding the Orca and a single Barracuda still in orbit. As the scout moves closer to the aliens, the Barracuda opens fire with some form of laser weapon and destroys it.

The Kido Butai is under the command of Kaigun-Taisa Nakamura Hikaru, captain of the battlecruiser Fuso. He immediately orders his eight ships to head in-system to the location of the wrecked scout. Two days later, with the Kido Butai still one point five billion kilometres away, the wreck vanishes from sensors. Apparently, the aliens salvaged it almost immediately.

22nd December 1970
The Kido Butai moves within sensor range of the asteroid and finds the Orca and Barracuda moving away at 1944 km/s. Kaigun-Taisa Nakamura orders the fleet to close within weapon range and open fire on the Barracuda.



The fleet closes to 180,000 km and opens fire; the battlecruisers with their 25cm main armament and secondary 12cm laser turrets and the four light cruisers with their 20cm lasers. The Barracuda has third generation jamming technology, which reduces the effectiveness of the Japanese fire control, but still receives twenty hits, none of which penetrate the armour. There is no return fire. Kaigun-Taisa Nakamura orders his ships to close to 150,000 km. Unexpectedly, the Barracuda breaks formation and charges at the Kido Butai at 7317 km/s. Nakamura orders as immediate course reversal, as the battlecruisers’ 12cm laser turrets continue to blast away chunks of the alien ship’s armour.

As the range falls to 95,000 km/s, the four light cruisers fire again. In conjunction with the battlecruisers, they inflict sixteen strength-4 and fifteen strength-2 hits, seven of which penetrate the Barracuda’s armour. They obviously hit something vital as the ship is left dead in space. Moments later, the battlecruisers fire their 25cm lasers and the Barracuda disappears without leaving a wreck. Putting that mystery aside for now, the Kido Butai reverses course again and closes on the Orca. The Orca tries to close, but it is too slow. The fleet stands off and blows it to pieces. Once again there is no wreckage.

A deep analysis of the sensor records from the battle reveals that the alien ships were biological in origin. Either grown as ships, or perhaps some Aether-dwelling species. One they are destroyed, or die, they fall back deep into the Aether, rather than dropping into normal space. Imperial Naval Intelligence believes that communication is likely to be impossible. The new species is assigned the designation of Mizuchi, after a water dragon from Japanese mythology.

Oboro originally detected two more Barracudas and three 19,237-ton Hammerheads, so Kaigun-Taisa Nakamura orders a search of the asteroid belt. To increase sensor coverage, two of the light cruisers are deployed a hundred and fifty million kilometres either side of the main body. An Aichi scout is sent into the inner system. However, with only about a fifth of the asteroid belt searched, fuel is already becoming an issue. A replenishment ship is dispatched from Earth.

27th December 1970
An Aichi E1A scout from the Kido Butai detects a previously unknown Mizuchi ship in orbit of Sigma Draconis II. Designated as Moray class, the ship is 3,931 tons and capable of 4274 km/s. The E1A is faster, so Kaigun-Taisa Nakamura orders it to shadow the Moray while the Kido Butai moves to the inner system. Unexpectedly, the scout detects sensor emissions from two new ships, designated as Piranha and Stingray, at a range of only two point five million kilometres. The new ships must be very small for the scout not to detect them at ten percent of its maximum sensor range. They are closing at 8116 km/s and the E1A has a maximum speed of 6000 km/s.



Once within two million kilometres, the E1A can detect the thermal emissions from their drives. There are eight ships in total: one Stingray, three Piranhas and four of a new type designated as Manta class. The scout continues to run, but they close in. Just before they open fire, the scout picks them up on active sensors. The Stingray is 629 tons. The other two types are both 739 tons. The Manta has a single laser weapon, similar to that on the Barracuda, with a range of at least 120,000 km and a five second recharge time. Three volleys are enough to destroy the fragile scout. Within a day, the wreck has vanished. The Kido Butai sets course for Sigma Draconis II.

30th December 1970
The Kido Butai, with the two detached light cruisers now back in the main body, detects the Moray still in orbit of Sigma Draconis II. The Mizuchi ship makes no attempt to run and is destroyed in a single volley. There is no sign of the small attack craft and the Kido Butai is below half fuel, so Kaigun-Taisa Nakamura decides to hold position and request additional scout craft, while he sends out his two remaining E1As to search the system. Wary of the advanced technology of the Mizuchi, Kaigun-Taisho Nagata dispatches two additional carriers and two more light cruisers from Sol.

31st December 1970
An E1A scout detects a Mizuchi Barracuda close to Sigma Draconis V, six hundred million kilometres from the Kido Butai. The Barracuda begins to close and the scout detects emissions from two new types, a Mako and a Tiger Shark. Kaigun-Taisa Nakamura orders the scout to run and orders the Kido Butai to proceed to Sigma Draconis V. The three Mizuchi ships follow the scout at 7217 km/s, then suddenly abandon the chase and reverse course. Emissions from the Stingray appear on sensors ahead of the scout, moving out of the moons of Sigma Draconis V. It is extremely disconcerting how easily the Mizuchi avoid Imperial Navy sensors. The same eight ships that destroyed the previous scout now claim another victim.

2nd January 1971
The Kido Butai arrives in orbit of Sigma Draconis V. There is no sign of the Mizuchi. Four of the ships are below 40% fuel, so Kaigun-Taisa Nakamura declares an end to chasing around the system. He decides to pull back to the jump point and wait for the replenishment ship. He also requests a freighter with a deep space tracking station, so that better sensor coverage can be established.
 

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Re: Empire of the Stars - Updates Thread
« Reply #7 on: June 25, 2024, 10:38:47 AM »
20th January 1971
Junyō (Wandering Falcon), the second Taiho class carrier, joins the Imperial Japanese Navy. Her strikegroup is still under construction.

15th February 1971
A ship of the Covenant of Velsharoon enters Sakura, adjacent to Hadano, for the first time. A week later, a Covenant ship enters Yao, also adjacent to Hadano. The technology for orbital habitats is being researched but will not be available until the end of the year. Once such habitats can be built, a population will be established in Hadano and a claim made on the system with both the Covenant and the People’s Republic of Xiama.

8th March 1971
The Kido Butai returns to Sigma Draconis after a brief visit to New Osaka for shore leave. The reinforcements sent by Kaigun-Taisho Nagata have been added to the fleet. Freighters are on en route to the system with a pair of deep space tracking systems that will be used to find the elusive Mizuchi. Once the freighters arrive, the Kido Butai will escort them in-system, leaving a single light cruiser on the jump point.

Kido Butai
Akagi II class Carrier: Hiryu, Shokaku, Soryu, Zuikaku
Kongo II class Battlecruiser: Fuso, Yamashiro
Nagara II-Ro class Light Cruiser: Abukuma, Kashima, Kashiwara, Katori, Niyodo, Sendai
240x Mitsubishi A1M 'Raiden' class Fighter:
5x Aichi E1A class Scout:

30th March 1971
As the Empire of Japan is in contact with six different alien races, the twelve survey cruisers of the Asagiri class no longer provide sufficient survey capability to determine the location of the alien population centres, while still expanding the Empire’s own boundaries and identifying potential mining colonies. This lack of capacity is solved in two ways. A new type of small craft, the Kyushu M1W 'Shiragiku' (White Chrysanthemum) class Geological Survey Craft, is intended to operate in systems with substantial numbers of moons or asteroids, freeing up the larger ships for gravitational surveys. Six are launched, with a further six planned.

Kyushu M1W 'Shiragiku' class Geological Survey Craft     1,000 tons    22 Crew    168.6 BP    TCS 20    TH 30   EM 0
1500 km/s    JR 3-50      Armour 1-8       Shields 0-0       HTK 9      Sensors 0/0/0/1      DCR 1-10      PPV 0
Maint Life 9.69 Years     MSP 105    AFR 8%    IFR 0.1%    1YR 2    5YR 30    Max Repair 100 MSP
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 80 months    Morale Check Required   

Komatsu KSJ-100 Jump Drive     Max Ship Size 1000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-30-E Ion Drive (1)    Power 30    Fuel Use 17.86%    Signature 30    Explosion 5%
Fuel Capacity 180,000 Litres    Range 181.4 billion km (1399 days at full power)

Type 25 Go-24B Fighter Sensor (1)     GPS 2     Range 2m km    MCR 181.7k km    Resolution 1
Type 30 Go-55B Passive Sensor (1)     Sensitivity 0.6     Detect Sig Strength 1000:  6.1m km
Type 10 Go-65B Passive Sensor (1)     Sensitivity 0.8     Detect Sig Strength 1000:  7.1m km
Geological Survey Sensors (1)   1 Survey Points Per Hour.

The Asagiri design is superseded by the new Shimakaze Survey Cruiser. Despite being twice as large, the Shimakaze retains the same survey capability as the Asagiri, devoting the extra hull space to additional capabilities. A reloadable missile launcher and a small magazine allows the Shimakaze to deploy up to seventeen missiles, drones or buoys. A small hangar deck contains the latest Aichi E1A3 scout, a pair of Mitsubishi A2M2 'Shinden' fighters and a single 1x Nakajima B1N 'Ryūsei' strike craft. The small but capable strikegroup provides a commerce-raiding capability, a minimal self-defence capability and the ability to conduct missile strikes or lay buoys without risking the ship itself. The sensor suite is similar to that of a Nagara class light cruiser. The first three ships of the class, Shimakaze (Island Wind), Matsukaze (Wind in the Pines) and Harukaze (Spring Wind), will be used to improve astrographic knowledge in Xiamen and Velsharoon space.

Shimakaze class Survey Cruiser      18,000 tons       407 Crew       2,629.7 BP       TCS 360    TH 1,050    EM 0
2916 km/s    JR 3-50      Armour 1-61       Shields 0-0       HTK 105      Sensors 12/16/5/5      DCR 24-13      PPV 3.6
Maint Life 5.83 Years     MSP 2,191    AFR 108%    IFR 1.5%    1YR 110    5YR 1,647    Max Repair 225 MSP
Hangar Deck Capacity 1,200 tons     Magazine 216 / 0   
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 60 months    Flight Crew Berths 24    Morale Check Required   

Komatsu KMJ-180 Jump Drive     Max Ship Size 18000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-525-E Ion Drive  (2)    Power 1050    Fuel Use 11.72%    Signature 525    Explosion 7%
Fuel Capacity 2,491,000 Litres    Range 212.6 billion km (843 days at full power)

Type 29 Reloadable Missile Launcher (1)     Missile Size: 12    Rate of Fire 1390
Type 27 Go-44C Missile Fire Control (1)     Range 19.9m km    Resolution 120   ECCM-2
Shusui Reconnaissance Drone (3)    Speed: 5,200 km/s    End: 10d     Range: 4500m km    WH: 0    Size: 12
Rakurai Anti-ship Missile (8)    Speed: 31,250 km/s    End: 4.3m     Range: 8m km    WH: 12    Size: 12    TH: 125/75/37
Zuiun-Ro Sensor Buoy (6)    Speed: 0 km/s    End: 0m     Range: 0m km    WH: 0    Size: 12   

Type 27 Go-11C Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 30 Go-51B Passive Sensor (1)     Sensitivity 12     Detect Sig Strength 1000:  27.4m km
Gravitational Survey Sensors (5)   5 Survey Points Per Hour
Geological Survey Sensors (5)   5 Survey Points Per Hour
Electronic Warfare Jammers:   Sensor 1   

Strike Group
1x Aichi E1A3 Scout   Speed: 7502 km/s    Size: 5
2x Mitsubishi A2M2 'Shinden' Fighter   Speed: 12002 km/s    Size: 5.5
1x Nakajima B1N 'Ryūsei' Carrier Strike   Speed: 10001 km/s    Size: 7.5

14th April 1971
Ten freighters unload two deep space tracking stations, plus infrastructure, on the single moon of Sigma Draconis III. As the system has not undergone a geological survey, apart from a few asteroids, the moon was selected because it is only eleven hundred and fifty kilometres in diameter, making it easy to terraform in the future, unusually dense, resulting in gravity within human tolerance at 0.12G, and is also the body closest to the human temperature range at -37C. Unfortunately, that forethought and the effort involved in delivering the tracking stations does not pay off. There is still no sign of the Mizuchi ships.

As the last contact with the Mizuchi was near Sigma Draconis V, Kaigun-Taisa Nakamura, senior officer of the Kido Butai, decides to send nine of the freighters to the jump point, escorted by the light cruiser Abukuma, while the rest of the Kido Butai escorts a lone freighter transferring one of the deep space tracking stations to a moon of Sigma Draconis V. That plan has only been in motion for a few hours, with the freighter still preparing to take on its cargo, when the tracking stations detect thermal emissions from the Mizuchi Tiger Shark class moving toward the inner system. Kaigun-Taisa Nakamura immediately abandons his plan and recalls the departing freighters. He also orders all ships to deactivate their active sensors, except for one light cruiser. If the Mizuchi are approaching the inner system, he does not want anything to dissuade them.



15th April 1971
As the Tiger Shark draws closer, the tracking stations also detect thermal emissions from a Mako and a Barracuda escorting the Tiger Shark. All three ships have a speed of 7217 km/s, so the Kido Butai can only engage them in energy combat if the Mizuchi cooperate. Even the A1M ‘Raiden fighters only have a speed of 8000 km/s, so they would have to close through that hostile fire for some time before being able to attack. Therefore, at one hundred and sixty million kilometres, Kaigun-Taisa Nakamura launches the entire 1st Air Fleet with orders to circle around the Mizuchi and get behind them.

At one hundred and twenty million kilometres, the Mizuchi suddenly reverse course, before the fighters can move past them. It is proving extremely difficult to force a decisive engagement. Kaigun-Taisa Nakamura decides to revert to his earlier plan. If a similar situation can be engineered near Sigma Draconis V, he will launch fighters much earlier. The nine freighters leave once again and the tenth begins loading a tracking station. The fighters are recalled.

As soon as the fighters reverse course, so do the Mizuchi, heading for the planet once again. Kaigun-Taisa Nakamura orders the fighters to attempt another loop around the Mizuchi and it quickly becomes apparent that the Mizuchi can detect the fighters, even at fifty million kilometres. They move away again, although this time their course bends away from a reciprocal heading, apparently due to the presence of the fighters.



Kaigun-Taisa Nakamura is concerned about the fuel state of the fighters, but decides to use them like a sheepdog, in an attempt to force the Mizuchi toward the Kido Butai. The tactic works for a short time, then the Mizuchi suddenly head directly for the fighters. Nakamura orders them to close head on and attack, targeting the fast-firing Barracuda first. Once within two million kilometres, the fighters can detect the Mizuchi ships on active sensors. The Mako is 22,528 tons, while the Tiger Shark is 33,661 tons. The first shots are fired by the Mako at 268,000 km, destroying two of the fighters. That weapon range is extremely worrying for Kaigun-Taisa Nakamura, as it means the Mizuchi have faster ships and longer ranged weapons than the Kido Butai. If the fighter attack is not successful, the Mako could theoretically destroy the entire Kido Butai by holding the range open and firing from beyond Japanese weapon range.



Four fighters are destroyed at 40,000 km by the Mako firing again, accompanied by the Barracuda. Based on the weapons fired so far, the Mako has eighteen 25cm lasers with a twenty second recharge time, plus one larger weapon, while the Barracuda has ten twin laser turrets firing every five secondx. At point blank range, the Tiger Shark adds to the defensive fire with fifteen twin laser turrets. Six more fighters are lost. Finally the A1Ms can return fire and the Barracuda suffers one hundred and seventy-five strength-1 impacts from the fighters’ cannon. Six penetrate the hull.

Fortunately for the 1st Air Fleet, the massed fire of the Mizuchi is constrained by their number of fire controls, which restricts how many targets they can engage simultaneously. Another four Japanese fighters explode, then the Barracuda disappears from sensors. Kaigun-Taisa Nakamura designates the Tiger Shark as the next target. The number of active fighters continues to fall as the pilots bravely press their attacks to visual range. Two rounds of fire fail to penetrate the armour of the Tiger Shark, then suddenly during the third volley, it is ripped apart by a huge series of secondary explosions. The Mako runs for the outer system, with the fighters staying close and pouring fire into its hull. Two more fighters are hit and destroyed. After twenty-five seconds of constant fire, the Mako can take no more and vanishes from sensors.

Twenty-seven fighters have been lost, but they destroyed over sixty thousand tons of Mizuchi warships. Once again, the 1st Air Fleet has demonstrated its quality and its capabilities. The survivors head back to their carriers. Even so, despite this great victory, there are still a significant number of known Mizuchi ships that have not been found. Kaigun-Taisa Nakamura resumes his plan to place a tracking station on one of the moons of Sigma Draconis V.

23rd April 1971
The tracking station is emplaced on the fourth moon of Sigma Draconis V. There is no sign of Mizuchi ships. Two more freighters carrying tracking stations enter the system and are directed to unload one each at the two existing tracking station sites.

30th April 1971
The 1st Hiko Sentai, with its twenty-four Mitsubishi G1M 'Donryu' long-range strike craft arrives at Sigma Draconis V. Kaigun-Taisa Nakamura requested their presence after the recent battle with the Mizuchi, so that his forces could benefit from a temporary missile capability. They refuelled at New Osaka and again from a replenishment ship at the Sigma Draconis – Miyoshi jump point and cannot remain for long, so the Kido Butai sends out three Aichi scouts to sweep the nearby asteroids. A single Mitsubishi E2M 'Shiun' (Purple Cloud) class Reconnaissance Craft has been added to the 1st Hiko Sentai, providing jump capability for the strike craft and carrying a single reconnaissance drone. The new Taiho class carriers do not have jump drives, so they are unable to reach Sigma Draconis.

Mitsubishi E2M 'Shiun' class Reconnaissance Craft      500 tons       4 Crew       64.9 BP       TCS 10    TH 63    EM 0
6257 km/s    JR 3-50      Armour 1-5       Shields 0-0       HTK 5      Sensors 0/0/0/0      DCR 0-0      PPV 1.8
Maint Life 1.72 Years     MSP 25    AFR 100%    IFR 1.4%    1YR 10    5YR 154    Max Repair 31.3 MSP
Magazine 12 / 0   
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 18 days    Morale Check Required   

Komatsu KSJ-50 Jump Drive     Max Ship Size 500 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-62-B Gas Core Drive (1)    Power 62.5    Fuel Use 193.35%    Signature 62.5    Explosion 12%
Fuel Capacity 81,400 Litres    Range 15.2 billion km (28 days at full power)

Type 23 Fixed Missile Launcher (1)     Missile Size: 12    Hangar Reload 173 minutes    MF Reload 28 hours
Type 26 Go-44B Missile Fire Control (1)     Range 19.9m km    Resolution 120   ECCM-1
Gekkō Reconnaissance Drone (1)    Speed: 6,250 km/s    End: 5.5d     Range: 2,992.4m km    WH: 0    Size: 8

Type 26 Go-14B Strike Sensor (1)     GPS 768     Range 19.9m km    Resolution 120

3rd May 1971
After several days of searching asteroids without success, one of the E1A scouts detects a brief sensor emission from a Piranha and a Stingray near Sigma Draconis VI, over a billion kilometres from the Kido Butai, which is still close to Sigma Draconis V. Kaigun-Taisa Nakamura orders the scout to return home and takes the Kido Butai, now comprising two battlecruisers, four carriers and four light cruisers, toward Sigma Draconis VI. Although the 1st Hiko Sentai remains at Sigma Draconis V, the Mitsubishi E2M 'Shiun' launches its recon drone ahead of the Kido Butai.



The drone moves within sensor range of Sigma Draconis VI while the Kido Butai is still almost three hundred million kilometres away and detects four of the Mako class, now designated as heavy cruisers and armed with longer-ranged lasers than the Kido Butai. Once the drone is within the orbit of the planet’s single moon, at 90,000 km, it detects a large number of the small attack craft. Five Stingrays, nine Mantas, eighteen Piranhas and fifteen of a new type designated as Starfish class.



Unlike the Zuijin, the Mizuchi completely ignore the drone, which confirms their position while the Kido Butai closes in, reaching a hundred and thirteen million kilometres from Sigma Draconis VI before one of the Makos engages its active sensors. Suddenly the Mizuchi ships begin moving. The four Makos and eight of the attack craft charge toward the Kido Butai. The remaining attack craft head out-system at 8116 km/s. When the range falls to ninety-five million kilometres, the Makos reverse course. Until that point, only one Japanese ship, a light cruiser, had active sensors engaged, so the Makos may have believed the Kido Butai was a smaller force. The Gekko drone is still active and tracks the ships as they move past Sigma Draconis VI and into the outer system. By the time the Kido Butai reaches the planet, the Mizuchi are well out of sensor range.

7th May 1971
The Kido Butai remains on station at Sigma Draconis VI, using only the active sensors of a single light cruiser. The Mako class heavy cruisers are lurking beyond sensor range, detected only by their sensor emissions as they move around. Kaigun-Taisa Nakamura launches the 1st Air Fleet with orders to move around the general location of the Makos and try to get behind them. They manage to conduct the manoeuvre without any sign they have been detected. Once the fighters are in position and the Mako sensor emissions are detected at ninety million kilometres, Nakamura orders the battlecruiser Kirishima to activate her sensors. The Kido Butai leaves orbit and gives chase once more, but this time the fighters are waiting astride the likely retreat course of the Makos.



The Makos apparently detect the fighters as they reverse course again and begin heading toward the Kido Butai. They prevaricate, moving back and forth a few times, before deciding the fighters are the most immediate threat and heading in-system. The 1st Air Group gradually closes the range. With the Kido Butai thirty million kilometres from the four approaching Makos and the fighters two million kilometres behind them, it occurs to Kaigun-Taisa Nakamura that he does not want a stand up fight between the Makos and the Kido Butai while the fighters are out of range. Even though the Kido Butai has a sixty percent tonnage advantage, excluding the carriers, the Makos are much faster with considerably better fire control and electronic warfare capabilities.

On the other hand, if the fighters try to close in without support from the two Kongos and four Nagara class light cruisers, they will only close 15,000 km/s during the Makos’ weapons recharge cycle, which would allow the Mizuchi cruisers to fire about twenty times, potentially destroying the majority of the fighters before they can reach firing range. Therefore, Nakamura orders the fighters to close to 320,000 km and hold that range. His plan is to slowly close the range and as soon as the Makos target his ships, the Kido Butai will charge to point blank range and move through the Makos, hopefully dragging them into the fighters, which will also be closing. Even if that fails, the close pass should do enough damage to slow the targets for the fighters. Casualties are expected to be heavy. The main problem is the carriers, which are not designed for that type of close combat, so they are detached and ordered back to Sigma Draconis V. They are still in significant danger if the battle does not go well.

Nakamura assigns all the fighters to a single target. The Kido Butai takes two targets, with one battlecruiser and two light cruisers assigned to each. As soon as a target is destroyed, targeting will switch to the fourth Mizuchi cruiser. As the ships enter estimated weapon range of the Mizuchi, the fighters are ordered to close. The Mizuchi open fire on Yamashiro from 310,000 km, inflicting a strength-5 hit from one of their spinal weapons and a strength-2 hit from a 25cm laser. Nakamura orders his ships to close at maximum speed and open fire.



The Mizuchi pick that exact moment to reverse course once more and charge back toward the fighters, staying outside the weapon range of the Kido Butai, but allowing the fighters to close much more quickly. After five seconds, they change course again, perhaps torn between different courses of action, and continue toward the Kido Butai. As soon as they enter weapon range, the six Japanese ships open fire, scoring a total of fourteen hits, a mix of 25cm, 20cm and 12cm, on two of the Makos. The four Makos turn again, opening the distance to the Kido Butai to 208,000 km/s, outside 12cm range, and open fire, scoring thirty strength-3 hits on Yamashiro and penetrating through seventy-five percent of her armour in three places.



Kaigun-Taisa Nakamura realises the intent behind the seemingly indecisive manoeuvres. The Mizuchi are holding the range open to the Kido Butai, allowing to them to fight at ranges where they have superior firepower, while trying to avoid the approaching fighters. A straight approach to point blank range would be far better for the fast firing 12cm turrets on the Kongos and would also lessen the effects of the Mizuchi ECM. The Makos continue their rapid turns, taking fire from the Kido Butai as it closes, including seventeen strength-8 hits from the Kongos at 97,000 km. Nakamura takes a page from the Mizuchi playbook and orders a course reversal just before their lasers recharge. The Mizuchi fire again at 86,000 km.

The battlecruiser Yamashiro is struck by fifty-one strength-10 hits and four strength-21 hits. She disintegrates as an engine and a reactor suffer massive secondary explosions. Shocked by the loss of Yamashiro, Nakamura orders his ships to charge the enemy. The four Nagaras fire their 20cm lasers at 25,000 km and one of the Makos suffers its own secondary explosion and disappears from sensors. Another suffers minor internal damage. Moments later, the fighters arrive and begin strafing a third Mako at point-blank range.

The Mizuchi suddenly decide to run, moving perpendicular to their previous course, but only at 4511 km/s, and away from both the fighters and the Kido Butai. The fighters are faster and stay at point-blank range, while the Kido Butai moves to intercept, closing to just 6500 km, within the range of the light cruisers’ TK-10A point defence railguns. All three Makos take numerous hits from the railguns and the cannon of the fighters. The battlecruiser Fuso attacks the only undamaged Mako with her 25cm lasers, scoring fourteen strength-16 hits and penetrating its armour. All three surviving Mizuchi ships now have some degree of internal damage.



The next exchange of fire is at visual range. The Makos are still extremely dangerous and target Fuso, inflicting twenty-eight strength-16 hits from their 25cm lasers. The battlecruiser suffers the same fate as her sister, vanishing amid colossal secondary explosions. Kaigun-Taisa Nakamura Hikaru is killed on Fuso’s bridge. Two Makos are destroyed by 20cm laser fire from the light cruisers Sendai and Kashima. Only the Mako under fire from the fighters survives, but it takes at least fifty internal hits and is no longer moving. One more volley from the railguns of the light cruisers and the battle is over.

Once again the Imperial Japanese Navy has been victorious, but once again the cost was very high. Two Kongo class battlecruisers have been destroyed, with the loss of fifteen hundred officers and crew, including Kaigun-Taisa Nakamura. Eight hundred survivors are rescued from life pods. Four of the original six Kongos have now been lost and the Imperial Navy is reduced to two battlecruisers. For now, the carriers and their fighters will have to be the shield of the Empire.

Given the Mizuchi proclivity for salvaging wrecks, the Kido Butai remains near the wrecks of Yamashiro and Fuso and the carriers rejoin the light cruisers. The replenishment ship Kenyo Maru is summoned from the Miyoshi jump point. Somewhere in Sigma Draconis there is still a large formation of Mizuchi attack craft, a smaller attack craft group and a squadron of two Barracudas and three Hammerheads that was detected by Oboro in the first contact, but has not been seen since. The light cruiser Abukuma completes its mission of escorting nine freighters to the Miyoshi jump point and also moves to rejoin the Kido Butai.

Five hours after the battle the group of attack craft, comprising a Stingray, three Piranhas and four Mantas, that destroyed a E1A scout in December 1970, and have been detected a couple of times since, appear on thermal sensors passing just six million kilometres from the Kido Butai on a course toward the inner system. With their speed of 8116 km/s, they are too fast for the A1M ‘Raiden’ fighters to intercept. The new commander of the Kido Butai is Kaigun-Taisa Mazaki Yukimori, captain of the carrier Soryu. Concerned about the damage the Mizuchi attack craft could cause in the unprotected inner system, he orders the strikegroup of his own carrier, now down to forty-four A1Ms, to give chase and try to achieve and maintain contact. The Mizuchi turn and run as soon as they detect the fighters and are quickly out of sensor range. A few hours later they reappear at Sigma Draconis VI, fifty million kilometres from the Kido Butai and the battlecruiser wrecks, where the Gekko drone is still functioning. They remain for a few hours than vanish again.

Kaigun-Taisa Mazaki cannot allow the small Mizuchi force to roam around the inner system, but he is equally loathe to leave the wrecks of the battlecruisers. If the theories of Imperial Naval Intelligence are correct, the Mizuchi are living creatures that might consume Trans-Newtonian minerals as food, enabling them to reproduce. That cannot be allowed. Therefore, he takes the risky decision to leave half his force at the wrecks and take two carriers and two light cruisers back to the inner system, including his own ship, Soryu. He requests reinforcements from an increasingly stretched Combined Fleet in Earth orbit. As the in-system force passes Sigma Draconis VI, it detects the small Mizuchi fast attack group once again, which immediately moves away.

Kaigun-Taisho Nagata decides the Imperial Navy has to crush the Mizuchi quickly and return to its normal deployment, so he dispatches the two remaining Kongo class battlecruisers and the Akagi class carriers Akagi and Zuiho, which have strikegroups comprised of the Mitsubishi A2M ‘Shinden’, with a speed of 12,000 km/s, and two more light cruisers. That leaves Earth protected by four carriers, one without a full strikegroup, and eleven light cruisers, four of which are in overhaul.

8th May 1971
The half of the Kido Butai heading sunward, designated as the in-system force, is a hundred million kilometres past Sigma Draconis VI, when the eight Mizuchi attack craft are detected by the Gekko drone once again, still with eighteen hours of endurance remaining. Kaigun-Taisa Mazaki sees an opportunity and orders his force to move to a location opposite to that of the second half of the Kido Butai, designated as the guard force, with the Mizuchi in the centre. Then both forces will advance and trap the Mizuchi. That plan is barely underway, when the guard force detects sensor emissions eighty million kilometres further out-system from a pair of Stingrays. It appears the much larger force of forty-seven Mizuchi attack craft is making an appearance at a most inconvenient time.



Kaigun-Taisa Mazaki orders the guard force to run toward his own ships at their best speed. The Kido Butai must be reassembled before the larger Mizuchi force can overrun the two halves of the Kido Butai separately. Almost by accident, the original plan works, with the small Mizuchi force exhibiting the same behaviour as the Makos once it detects both approaching forces. The two halves of the Kido Butai close in from either side. For the moment, the larger force has vanished as the sensor emissions have ceased.



As the guard force enters weapon range, Kaigun-Taisa Mazaki orders all fighters launched from both halves of the Kido Butai. The first shots are fired by Kashima and Katori at 220,000 km, scoring one hit each. The Mizuchi attack craft end their dance back and forth and immediately charge toward the two light cruisers and the accompanying carriers. Kaigun-Taisa Mazaki considers ordering the guard force to reverse course to keep the range open, but that would take the in-system force out of the battle. The Mantas fire at the newly launched strike groups from Shokaku and Zuikaku at 126,000 km, outside their previously demonstrated maximum range, and destroy one of the A1M ‘Raiden’ fighters.

Five seconds later, the Mizuchi fire again. This time the Mantas target Kashima, inflicting two strength-1 hits while the three Piranhas fire a new weapon at the fighters. An A1M is hit twice and loses both its fire control and primary sensor, without taking any armour damage. The Mizuchi weapon is microwave-based and apparently disables electronic systems without the need to breach armour, making it deadly against even Japanese capital ships.

At 43,000 km, Kashima and Katori fire again, each destroying a Manta with their 20cm lasers. Kashima is hit simultaneously, suffering two strength-3 armour hits from the Mantas and pair of strength-2 hits from the Mizuchi microwave weapon that disable several of her electronic systems, including one of her two fire controls. The one hundred and thirteen Mitsubishi A1M ‘Raiden’ fighters from Shokaku and Zuikaku reach point blank range and obliterate all three Piranhas and a third Manta in a hail of cannon fire. Kashima is hit again by the last Manta before the fighters destroy both it and the Stingray, which appears to be unarmed.

Kashima has three hits that penetrated halfway through her armour and has lost several electronic systems. One fighter has been lost and second has internal damage. All eight Mizuchi fast attack craft were destroyed. About thirty seconds after the last hit was taken, Kashima’s tactical officer reports the armour damage is increasing. Within a couple of minutes, the initial damage has doubled, leaving the light cruiser with three holes through her entire armour belt. The impact of the Mizuchi laser weapon apparently leaves behind some form of acidic residue that continues to cause damage after the initial hit – possibly connected to their biological origin.

The combination of the laser-acid weapon and the microwave weapon makes the small Mizuchi attack craft very dangerous. Therefore, Kaigun-Taisa Mazaki decides he has to keep the Kido Butai as a single force. The small force that was headed in-system has been destroyed, so he decides to hold his fleet at the battlecruiser wrecks and await the promised reinforcements. For the moment, there is no further sign of the larger attack craft group.

9th May 1971
The large Mizuchi attack craft group returns, appearing less than ten million kilometres from the diminished Kido Butai, but appears to be on a course in-system rather than attacking the Japanese fleet. With fifteen Piranhas, five Mantas and fifteen Starfish, a type that has not been observed in combat, Kaigun-Taisa Mazaki is concerned the previous strategy of dividing the fleet will not work. For the moment, he is more interested in avoiding combat until reinforced. The 1st Air Fleet would not be able to close the range alone and even if the Mizuchi cooperated, they are massively outranged by the fast-firing, deadly Mizuchi weapons. Instead, the Kido Butai holds position and prepares to defend itself if required. At five million kilometres, the Mizuchi force changes course to move directly away from the Kido Butai, not quite on a reciprocal heading. It seems that neither side is keen to engage.

12th May 1971
Abukuma joins the Kido Butai after completing its freighter escort mission.

14th May 1971
Emissions from two Stingray fast scouts are detected close to Sigma Draconis VI, about fifty million kilometres from the battlecruiser wrecks and the Kido Butai, which continues to hold its position.

22nd May 1971
A Kansai-Ro class freighter is moving toward the Kido Butai after deploying a second tracking station on the fourth moon of Sigma Draconis V. The freighter is intending to rendezvous with a salvage ship en route from Sol, which will salvage the battlecruisers and remove the need to guard the wrecks. The staff officer handling the orders forgot about the recent detection of the Mizuchi at Sigma Draconis VI and the freighter passes too close. The sensor emissions of the Stingrays are detected moving toward the freighter from the planet.



The freighter has a top speed of 1951 km/s and has no way to avoid the fast approaching Mizuchi. The Kido Butai is too far away. The armada of Mizuchi attack ships closes to point-bank range, but doesn’t fire. Instead, they shadow the freighter from a few thousand kilometres away. The surprising behaviour is explained when the crew of the freighter report they have been boarded. The alien boarders are hideous apparitions, multi-limbed, covered in a spiked exoskeleton and obviously bred for combat. They scuttle forward on a pair of hooved, backward-jointed legs; an upper pair of limbs serve as curved, bladed weapons, while smaller, secondary limbs disgorge bolts of acid. The freighter has a crew of less than two hundred, with only light personal weapons.

Even with limited resources, the crew are still part of the Imperial Japanese Navy and will not die easily. They swarm one of the attackers and manage to kill it with blades, despite losing thirty of their own number. Another three of the Mizuchi warriors are trapped in a cross-fire and killed with light firearms. Fourteen crew die in the exchange. An improved explosive device, delivered by a group of crewman in a suicidal charge kills four more. By  the time the gallant crew is finally overcome, eleven alien bodies litter the corridors of the freighter. Six of the alien craft, all Starfish class, break away from the rest and head toward the inner system at 8847 km/s. They have never been observed firing a weapon, so it is possible they were the source of the alien boarding troops.

Seeing a potential opportunity, Kaigun-Taisa Mazaki orders the Kido Butai to approach the scene of the battle. As the Kansai-Ro class is much slower than the Japanese warships, they can either destroy it, to prevent it being consumed by the Mizuchi, or perhaps allow the 1st Air Fleet to close quickly on the Mizuchi attack craft if they are protecting the freighter. The freighter is quickly located and the Kido Butai closes in. Emissions from two Stingrays are in close proximity, but quickly move away as the Kido Butai approaches. Sendai destroys the freighter with her 20cm lasers and the Kido Butai returns to the battlecruiser wrecks. In their wake, the emissions from the Stingrays move back toward Sigma Draconis VI.

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Re: Empire of the Stars - Updates Thread
« Reply #8 on: June 26, 2024, 08:18:59 AM »
28th May 1971
The fourth and final Kasagi class light cruiser, Itsukushima (a sacred island in Hiroshima Prefecture), is completed in Earth orbit and joins the Combined Fleet.

7th June 1971
The six Mizuchi Starfish class attack craft that split from the main force near Sigma Draconis VI are detected by the tracking stations on the fourth moon of Sigma Draconis V as they pass within twenty million kilometres of the planet. Analysts at Imperial Naval Intelligence plotted the point at which the Starfish broke away and now use that as the origin point of a course. Combining that with the current contact puts them on a direct course for an asteroid on the far side of the system, designated as Asteroid #27. Once the battlecruiser wrecks are salvaged, that asteroid will be the destination of the Kido Butai.

13th June 1971
The Covenant of Velsharoon accepts Japanese sovereignty over the Sakura system, adjacent to the contact system of Hadano and home to a small colony of 600,000 on the site of an old Zuijin ruin.

2nd July 1971
Reinforcements from Earth arrive to join the Kido Butai, increasing its strength to six Akagi class carriers, two Kongo class battlecruisers and seven light cruisers. Command shifts to Kaigun-Taisa Kobayashi Saburo, captain of the carrier Zuiho, who orders Kashima to return home for armour repairs. The salvage vessel Kasuga Maru is a few days behind the reinforcements.

Kido Butai
Kongo II class Battlecruiser: Hiei, Kirishima
Akagi II class Carrier: Akagi, Hiryu, Shokaku, Soryu, Zuiho, Zuikaku
Nagara II-Ro class Light Cruiser: Abukuma, Kashii, Katori, Niitaka, Niyodo, Sendai
212 Mitsubishi A1M 'Raiden' class Fighter
120x Mitsubishi A2M 'Shinden' class Fighter
6x Aichi E1A class Scout
2x Aichi E1A2 class Scout

10th July 1971
With the salvage of the first battlecruiser wreck underway, Kaigun-Taisa Kobayashi dispatches one of his E1A2 scouts to check for the presence of the Mizuchi attack craft at Sigma Draconis VI. As it reaches five million kilometres, two Stingray sensors are activated. The situation for the Kido Butai is now a little different, with a hundred and twenty faster fighters and the presence of the battlecruisers. Kaigun-Taisa Kobayashi decides to take Akagi, his own Zuiho, both battlecruisers and two light cruisers and swing around the planet, trying once again to trap the Mizuchi between two forces. The remaining four carriers and four light cruisers will comprise the second force. Once in place, both fleets begin their approach to Sigma Draconis VI.



Kaigun-Taisa Kobayashi wants to fight the battle away from his ships, especially with fifteen Piranhas in the Mizuchi fleet, so he orders all fighters launched. The two halves of the Kido Butai follow at in their wake. The closest ships are still two million kilometres away when the first shots are fired.



One fighter is disabled and another damaged at long range, then the slower A1M ‘Raiden’ formation moves within weapon range, with the faster A2Ms still 40,000 km away. Three Japanese fighters are destroyed in the exchange of fire, and several more lose their fire controls, but they account for seven of the Piranhas. Five seconds later, the A2M ‘Shinden’ arrive and the carnage increases. Six more Piranhas, four Starfish, two Stingrays and a Manta are obliterated by massed cannon fire from over three hundred Japanese fighters. Another three A1Ms are lost.

Less than thirty seconds after the first shots are fired, there are no Mizuchi attack craft remaining. Although nine A1Ms have been destroyed, with numerous others suffering electronic damage, another Mizuchi threat has been eliminated. The fighters return to their carriers and the Kido Butai reforms. As several ships are below half fuel, Kaigun-Taisa Kobayashi decides to remain near the battlecruiser wrecks while salvage operations continue and await the arrival of another replenishment ship from Earth.

16th July 1971
The shortest route from Sol to Sigma Draconis passes through the key system of Osaka, then Shōbara and Miyoshi. Shōbara still has an unexplored jump point and there are no nearby survey ships, so one of the Kawanishi H1K 'Saiun' Long Range Patrol craft is dispatched to probe it. The H1K emerges two billion kilometres from a red dwarf star, orbited by five planets and twenty-nine moons, which is named Matsuyama. The second planet is slightly larger than Earth and has a breathable atmosphere of 1.38 atm, including 0.18 atm of oxygen. A small ice sheet covers about twelve percent of the surface, with the remainder dominated by Tundra. The surface temperature is -61C.

After reporting the discovery, the commander of the 1000-ton vessel, Kaigun-Shōsa Hayashi Mitsukane, is ordered to deploy a sensor buoy on the Shōbara jump point, then head in-system and check for any signs of life. As the Kawanishi H1K moves within forty-four million kilometres of the planet, it detects emissions from a Zuijin Vanquisher class missile base. Kaigun-Shōsa Hayashi orders his helmsman to continue on course, counting on his vessel’s small size to avoid detection until it can reach sensor range.

At seventeen point five million kilometres, inside ninety percent of maximum range, the H1K activates its sensors and detects all three Zuijin base types – Vanquisher, Devastator and Terror - plus four Raptor class destroyers and two Avenger class escorts. Sensor emissions are detected from a pair of Ghost class FAC, which probably means there are more that remain undetected. Kaigun-Shōsa Hayashi orders the sensors deactivated and his ship runs for the jump point, escaping unharmed. For his bravery, Kaigun-Shōsa Hayashi is awarded the Order of the Sacred Treasure, a decoration for meritorious service for the Empire in the field of exploration. Only six have been awarded so far in the Interstellar Era.

The discovery of the Zuijin presence in Matsuyama takes the total of known Zuijin systems to six. Tarawa and Kwajalein are in Xiamen territory, while Kagoshima forms a boundary between the Empire of Japan and the mysterious Sapporo aliens. All three would be difficult to attack, due to the location of the first two and the powerful Zuijin defences in Kagoshima. Sendai and Takahama are three and four transits from Sol respectively, accessed via Proxima and Aomori (and also Kushiro for the latter). Given that the Empire is suffering from several resource issues and the Zuijin guard ruins that may contain such resources, Daigensui-Kaigun-Taisho Takagi, decides that once the Mizuchi threat is resolved, the Imperial Japanese Navy will plan for the conquest of Sendai, Takahama and Matsuyama.

2nd August 1971
An Asama-Ro class colony ship unloads 100,000 colonists on the sole moon of Sigma Draconis III. Infrastructure is already in place, along with two deep space tracking stations and a shore battery of eight 25cm lasers and ten TK-10A railguns. The colony will provide a shore leave location for ships of the Imperial Navy. Two light cruisers have been detached from the Kido Butai and are in orbit.

17th August 1971
The gravitational survey of Kapteyn’s Star is completed, without finding any other jump point except the entry from Sirius. An unknown alien ship was destroyed by the Zuijin in Kapteyn’s Star in February 1969 during a raid by the 1st Hiko Sentai. Imperial Naval Intelligence had assumed that alien ship had come from beyond Kapteyn’s Star but it appears it must have originated somewhere beyond one of the jumps in Sirius. Those systems now become a higher priority for survey.

14th September 1971
The Kido Butai is at the small colony on the moon of Sigma Draconis III. Shore leave is complete and the force is fully refuelled and resupplied. An Aichi E1A2 scout is dispatched to the suspected location of the missing Mizuchi ships at asteroid #27 but finds nothing. More scouts are sent into the asteroid belt to track them down. Of all the Mizuchi ships detected thus far, only two Barracudas, three Hammerheads and six Starfish remain unaccounted for.

25th September 1971
After a laborious search of the Sigma Draconis asteroid belt, there is still no sign of the missing Mizuchi ships. The Kido Butai cannot remain on station indefinitely so, after discussion with Kaigun Taisho Nagata, Kaigun-Taisa Kobyashi takes the bulk of the fleet back to Earth, leaving two carriers and four light cruisers in orbit of the small colony. Additional deep space tracking systems will be constructed and deployed in the system to aid a longer-term search.

3rd October 1971
The Maizuru Naval Dockyards in Earth orbit launch Nagato and Mutsu, the first battleships to be built for the Imperial Japanese Navy. They are armed with the same 25cm lasers and twin 12cm turrets as the smaller Kongos, albeit with more weapons in total, but their main advantage comes from two new technologies. Their Shīrudo-71A Shield Generators allow the ship to take considerable punishment without suffering armour damage and will recharge completely in less than nine minutes. The Kongos, which have demonstrated an unfortunate tendency to explode in combat, have less than eleven percent of their volume dedicated to armour. The Nagato class has over fifteen percent of its volume dedicated to a combination of shields and armour, making it more resilient to catastrophic damage. The Nagato is also the first ship to be equipped with the Type 30 Go-31D Laser Fire Control, extending weapon range from 256,000 km to 320,000 km.

Nagato class Battleship      54,000 tons       1,705 Crew       9,743.5 BP       TCS 1,080    TH 5,400    EM 10,650
5000 km/s    JR 3-50      Armour 5-127      Shields 355-532      HTK 344     Sensors 12/16/0/0      DCR 32-5      PPV 301
Maint Life 1.85 Years     MSP 4,608    AFR 729%    IFR 10.1%    1YR 1,709    5YR 25,632    Max Repair 675 MSP
Kaigun-Taisa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Komatsu KMJ-540 Jump Drive     Max Ship Size 54000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-900-B Ion Drive  (6)    Power 5400    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 2,220,000 Litres    Range 16.4 billion km (37 days at full power)
Shīrudo-71A Shield Generator (5)     Recharge Time 532 seconds (0.7 per second)

Kentaro-Sakura KS-25A Far Ultraviolet Laser (24)    Range 320,000km     TS: 5,000 km/s     Power 16-4     ROF 20       
Twin Kentaro-Sakura KS-12A Laser Turret (10x2)    Range 200,000km     TS: 16000 km/s     Power 8-8    ROF 5       
Type 27 Go-31C Turret Fire Control (2)     Max Range: 64,000 km   TS: 16,000 km/s    ECCM-2   
Type 30 Go-31D Laser Fire Control (2)     Max Range: 320,000 km   TS: 5,000 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (5)     Total Power Output 178.9    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-12B Capital Ship Sensor (1)     GPS 23040     Range 109.1m km    Resolution 120
Type 28 Go-71B Fighter Detection (1)     GPS 160     Range 13.8m km    Resolution 10
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 30 Go-51B Passive Sensor (1)     Sensitivity 12     Detect Sig Strength 1000:  27.4m km

Electronic Warfare Jammers:   Fire Control 2    Missile 2   

17th November 1971
Survey and exploration operations around the territory of the Velsharoon and Xiamen continue apace. Beyond the contact points at Minato and Hadano, a total of sixteen systems have been discovered. Four are known Xiamen systems including their home world in Guadalcanal. Six are systems where a Velsharoon presence has been detected, but are outside both Japanese and Xiamen space, and two systems are home to Zuijin forces. The rest might be claimed by the two alien races, but so far there has been no sign of their ships.

The two contact systems are connected along the line Minato – Truk – Palau – Makin – Kaizu – Hadano. Truk is now home to a Japanese colony of four million, hosting a naval base with three light cruisers present and a survey cruiser undergoing overhaul. No claim has been made on the system so far, but that is likely to happen soon. Truk has a second outward jump point, besides the link to Palau, which leads to a group of five systems, only two of which are connected to the stable jump network. This seems to be an area in which the Covenant of Velsharoon is exploring, rather than consolidating. Covenant ships have been detected in the closest two systems, but no colonies. Once Truk is secured, this area should fall under control of the Empire of Japan.

Palau is a planetless system that links Truk to Makin and also has a jump point to Bikini. The latter is a red dwarf with two unremarkable planets, but it is also the first system in which the Covenant of Velsharoon has issued a territorial claim and a request for a Japanese ship, in this case the new survey cruiser Matsukaze, to depart. This request strongly suggests that the Velsharoon home world is beyond Bikini, possibly an adjacent system. The next system in the chain, Makin, connects to two Zuijin-held systems, Tarawa and Kwajalein and on to Kaizu.

Kaizu has activity from both Covenant and Xiamen ships exploring Hadano and the Japanese systems beyond that, such as Sakura and Yao, and also links to Eniwetok, which is a hub of activity for the People’s Republic of Xiama. That is not surprising as Eniwetok connects to the Xiamen home system, Guadalcanal, as well as Bougainville and Tulagi, both of which have numerous planets, moons and asteroids to explore. A total of eight survey cruisers of the Imperial Navy are deployed in the systems beyond Minato and Hadano, trying to determine the extent of Velsharoon and Xiamen space, locate any resources of interest and find the Covenant home world.



1st January 1972
Given the recent discovery that Kapteyn’s Star is a dead-end system, the survey cruiser Shirayuki has been assigned to survey the systems around Sirius. The ship’s initial task is to complete the survey of Sirius itself as two survey locations were overlooked in the original survey, the first of which reveals a previously unknown jump point connecting to a brown dwarf system, which is named Ōbu.

15th January 1972
The probe of a newly discovered jump point in Sigma Draconis finds a connection to Atsugi, a known system two jumps beyond Sirius on the edge of known space. The route to Sigma Draconis from Earth via this new connection is a similar distance to that via Osaka, Shōbara and Miyoshi.



6th February 1972
Gallicite deposits on Earth have been exhausted. Only seven mineral types are still present on Earth and most of them are running out. The Empire of Japan faces shortages of Duranium and Boronide and a severe shortage of Gallicite that has significantly reduced shipbuilding output and temporarily ended production of maintenance supplies.

Earth Survey Report
Duranium:   61,599   0.41
Neutronium:   12,258   0.19
Corbomite:   13,928   0.20
Tritanium:   5,845   0.13
Vendarite:   73,665   0.40
Sorium:   82,613   0.44
Corundium:   183,707   0.50

Work is underway to transfer mines from Earth, but it is a slow process due to the distance of colonies with the necessary minerals. New Osaka has the bulk of the Empire’s mining output, but its Gallicite deposit is small and has limited accessibility. A comet in the Aomori system is the closest of the Gallicite mining colonies to Earth, with a ten billion kilometre round trip, but once again only has a small deposit, albeit at 0.7 accessibility. The long-term Gallicite supply for the Empire is currently Takamatsu II, which has 900,000 tons at 0.9 accessibility, but it is a twenty-two billion kilometre round trip from Earth, making colonization and deployment of mines a slow process. A hundred mines have also been deployed to Tsushima II, primarily because it is very close to Earth, but it only has Duranium above minimal accessibility and no Gallicite.

New Osaka Survey Report
Population 61m. 459 Mining Labour Camps, 298 Mines, 20 Automated Mines.
Duranium:   783,904   0.90
Neutronium:   213,603   0.60
Corbomite:   173,802   0.50
Tritanium:   116,303   0.70
Boronide:   414,303   0.60
Mercassium:   157,904   0.80
Vendarite:   539,903   0.70
Sorium:   462,803   0.70
Uridium:   361,302   0.50
Corundium:   116,104   0.90
Gallicite:   134,602   0.40

Aomori - Comet #3 Survey Report
277 Automated Mines.
Duranium:   172,425   1.00
Tritanium:   40,518   0.60
Boronide:   22,718   1.00
Corundium:   38,009   0.70
Gallicite:   146,812   0.70

Takamatsu II Survey Report
Population 14m. 157 Mines, 31 Automated Mines.
Duranium:   1,546,253   0.80
Neutronium:   299,634   0.90
Tritanium:   311,053   0.80
Mercassium:   247,771   0.70
Vendarite:   474,189   0.60
Uridium:   218,989   0.60
Gallicite:   899,634   0.90

Tsushima II Survey Report
Population 11m. 103 Mines.
Duranium:   13,105,355   0.70
Neutronium:   12,959,736   0.10
Corbomite:   54,169,336   0.10
Tritanium:   3,097,336   0.10
Boronide:   28,729,336   0.10
Uridium:   44,089,336   0.10
Corundium:   22,278,136   0.10

23rd March 1972
An Aichi E1A3 class scout from the survey cruiser Matsukaze probes a newly discovered stable jump point in Bikini. She emerges one point seven billion kilometres from a K4-III orange giant star with five planets, the fourth of which is close to an ideal habitable world. Given that the Covenant of Velsharoon issued requests for Imperial Navy ships to leave Bikini, this has a high probability of being the Velsharoon home world. The planet is comparable in size to Earth, with a similar atmospheric composition and a stable orbit. Oceans cover fifty-seven percent of the surface. Due to the temperature of -17C, the land area is dominated by Taiga, which would explain the physiology of the Velsharoon. To avoid a potential diplomatic incident, the scout returns to Bikini and sets a course for Matsukaze. The 18,000-ton survey cruiser heads for the new jump point.

26th March 1972
Several months ago, an ancient construct was discovered on Tonga III, two jumps beyond Truk and linked to the Covenant stable jump network. A Japanese xenoarchaeological regiment was deployed to the planet and has now completed its studies, revealing that the structure is dedicated to research into sensors and control systems and would likely boost such research on the planet by up to seventy percent. Tonga III is an Earth-sized world with a methane-ammonia atmosphere of 0.3 atm, so setting up a substantial research colony, especially in Covenant space, would be a challenge. However, a smaller colony might be enough to provide a small benefit to sensor research throughout the Empire.

27th March 1972
Matsukaze transits into the suspected Velsharoon home system and launches a Shusui reconnaissance drone at the fourth planet. Three hundred million kilometres from the target, the drone detects a new unit of the 8147-ton Salt class, plus four of a new type, the 68,184-ton Ashdod. There is no thermal detection, but the fleet is travelling at 439 km/s so the Ashdod almost certainly have commercial engines. As the drone approaches the planet, many more ships are detected, along with a huge population signature, fifty percent greater than Earth.

By the time the drone is in orbit, a vast fleet has been revealed in orbit of the fourth planet; two hundred and fifty-eight ships of twenty-three different classes, totalling almost six million tons. A large shipyard complex is in orbit and on the surface is a ground forces signature of half a million tons. There is no doubt this is the Covenant home world, so the system is named Velsharoon.



Velsharoon is three transits from the Japanese naval base at Truk, theoretically in Covenant space, and six from Sol. In the other direction, it is five transits from the contact system of Hadano, which is also three transits from the Xiamen home system of Guadalcanal. In the short-term, claiming the Truk system is the primary objective for the Empire of Japan, establishing a base close to key Velsharoon systems and cutting off six systems beyond the Truk – Samoa jump point from Covenant space.

5th April 1972
A colony of the People’s Republic of Xiama is detected on an asteroid in the Tulagi system

6th April 1972
There is still no sign of the Mizuchi in Sigma Draconis, despite searches of the asteroid belt and a full geological survey. Imperial Naval Intelligence believes it is possible the surviving Mizuchi have entered a different system and may take some time to locate. For now, two Akagi class carriers and four light cruisers remain in Sigma Draconis but they will soon have to return home due to maintenance concerns.

With the end of the immediate threat from the Mizuchi, the focus of Daigensui-Kaigun-Taisho Takagi turns to his plans for the remaining Zuijin systems, starting with Sendai. The Kido Butai has been reformed and comprises the new Nagato class battleships, the two surviving Kongos, both new Taihō class carriers, two older Akagi class carriers and the first pair of refitted Nagara II-Ha class light cruisers. The II-Ha is a direct refit of the II-Ro, replacing the fire control, sensors and fire control jammer, but most importantly replacing the main armament with the new Kentaro-Sakura KS-20B Far Ultraviolet Laser, which has a ten second recharge instead of fifteen seconds for the older KS-20A. With an increased rate of fire and longer range, the Nagara II-Ha will be significantly more effective than the Nagara II-Ro.

Kido Butai
Taihō class Carrier: Junyō, Taihō
Nagato class Battleship: Mutsu, Nagato
Kongo II class Battlecruiser: Hiei, Kirishima
Akagi II class Carrier: Shokaku, Zuikaku
Nagara II-Ha class Light Cruiser: Kitakami, Tama
72x Nakajima B1N 'Ryūsei' class Carrier Strike:
120x Mitsubishi A1M 'Raiden' class Fighter:
36x Mitsubishi A2M2 'Shinden' class Fighter:
36x Mitsubishi A2M3 'Shinden' class Fighter:
4x Aichi E1A class Scout:
4x Aichi E1A3 class Scout:

Nagara II-Ha class Light Cruiser      18,000 tons       596 Crew       3,359.8 BP       TCS 360    TH 1,800    EM 0
5000 km/s      Armour 6-61       Shields 0-0       HTK 117      Sensors 6/16/0/0      DCR 10-5      PPV 108
Maint Life 2.13 Years     MSP 1,666    AFR 259%    IFR 3.6%    1YR 490    5YR 7,357    Max Repair 450 MSP
Troop Capacity 500 tons     Boarding Capable   
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Koga-Murakama KM-900-B Ion Drive  (2)    Power 1800    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 826,500 Litres    Range 18.3 billion km (42 days at full power)

Kentaro-Sakura KS-20B Far Ultraviolet Laser (12)    Range 320,000km     TS: 5,000 km/s     Power 10-5     ROF 10       
Takashi Kinetics TK-10A Railgun (12x4)    Range 10,000km     TS: 5,000 km/s     Power 3-3     ROF 5       
Type 30 Go-31D Laser Fire Control (2)     Max Range: 320,000 km   TS: 5,000 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (3)     Total Power Output 107.3    Exp 5%

Type 27 Go-11C Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 30 Go-53B Passive Sensor (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km
Electronic Warfare Jammers:   Fire Control 2    Missile 2   

Ground Forces
1x Naval Landing Force

After confirming the jump point is undefended, the Kido Butai moves in-system. The reported Zuijin forces in Sendai comprise three bases: a missile-armed Vanquisher, a light missile-armed Devastator and the Terror point defence base. For this operation, the Kido Butai is commanded by Kaigun-Taisa Akita Toshiro, captain of the battlecruiser Kirishima and veteran of the Battle of Kochi. Wary of the power of the Zuijin particle lances that are probably based on the surface of Sendai II, he plans to make full use of his battleships’ shields and increased weapon range from previous engagements. The Kido Butai will remain together when facing the missiles of the Vanquisher, but then the battleships will proceed alone with a fighter escort. If necessary, the Nakajima B1N 'Ryūsei' of the Taihō class carriers will deliver a missile strike.

A hundred million kilometres from Sendai II, the three bases are detected by the active sensors of the Imperial Navy capital ships. There is no sign of any other Zuijin ships. At fifty million kilometres, an incoming salvo of forty missiles is detected. All the fighters launch and take up defensive positions. Unfortunately, the inbound missiles are laser torpedoes that detonate over a hundred thousand kilometres from the fleet, which means that the only weapons that can engage them are the 25cm lasers of the Nagatos and Kongos and the 20cm lasers of the Nagaras. The 12cm laser turrets have the theoretical range, but are linked to fire controls dedicated to tracking speed rather than range. Only three missiles and eight decoys are hit by point defence. Twenty-seven strength-3 laser warheads hit the carrier Shokaku, causing considerable internal damage and disabling two of her four engines. Eighty-five of her crew are killed.

The warships of the Imperial Japanese Navy have faced laser torpedoes only once before, a single salvo during the initial stages of the Battle of Kochi, but their detonation range was less than sixty thousand kilometres. However, a hasty review of past actions by the tactical officers of the Kido Butai notes that attack was from Ghost class fast attack craft. There is also a single instance of a Vanquisher launching laser torpedoes, during a fighter raid on Sakura. Two fighters were destroyed at over a hundred thousand kilometres. That vital information was not included in the operational briefings for the attack on Sendai. Fortunately for the responsible staff officer in Imperial Naval Intelligence, ritual seppuku has never been a tradition in the Imperial Navy.

Kaigun-Taisa Akita orders all 12cm turrets linked to the fire controls for the larger weapons, then orders the four carriers to withdraw toward the jump point. Before departing, Taihō and Junyō launch their Nakajima B1N carrier strike craft, which will remain with the Kido Butai. The fighters are deployed ahead of the main body in a position where they might be able to intercept the laser torpedoes.



Ten minutes after the crippling damage to Shokaku, a new salvo of forty missiles size-11 is detected. Fortunately, it seems to be directed at the capital ships, rather than the fleeing carriers. The fighters are 110,000 km from the main body as the torpedoes detonate and are in position to kill fifteen of them. The ship-based lasers destroy only three more. The difficulty in destroying the missiles is due to the large number of decoys. Over eighty decoys were hit but only eighteen missiles. The battlecruiser Hiei suffers sixteen armour hits. Kaigun-Taisa Akita considers going on alone with the battleships and the fighter escort, but he needs the new fire controls of the light cruisers to help engage any surface-based weapons and the battlecruisers are helping to shield them. Besides, the Zuijin are likely to only have a limited number of salvos of their laser torpedoes, so the Kido Butai presses onward.

Akita orders the seventy-two Nakajima B1N 'Ryūsei' to move ahead of the formation and launch missiles at the Devastator in preparation for the next phase of the battle, knowing that they might also attract fire from the Vanquisher and therefore reduce the potential damage to his warships.

The third wave of laser torpedoes inflicts fourteen strength-3 hits on Kirishima, including two deep armour penetrations. The fourth wave bypasses the main body and pursues the wounded Shokaku, almost twenty million kilometres astern. All forty detonate on target and the carrier disintegrates. Kaigun-Taisa Akita is well aware that this is a loss that could have been avoided with better planning and intelligence.

Fourteen torpedoes from the fifth wave are absorbed by the shields of the battleship Mutsu. The sixth wave targets Hiei once again. Fourteen hits are absorbed by her armour. The fifteenth hit penetrates and disables one of her engines. Kaigun-Taisa Akita cannot leave her behind so the Kido Butai drops to a speed of 3750 km/s. What was supposed to be a simple operation with overwhelming force is turning into a debacle. The next salvo also focuses on Hiei, presumably because the loss of speed makes her an easier target. She is hit sixteen times, but suffers no internal damage.

The Nakajima B1N 'Ryūsei' strike craft move within range of the Rakurai anti-ship missiles and launch against the Devastator. One hundred and forty-four missiles streak toward the Zuijin base at 31,250 km/s. Detonations litter their wake as the Devastator launches light missiles but, like the Zuijin torpedoes, the Rakurai are well-equipped with decoys. As they reach point blank range, the Terror adds its short-range point defence. In total, thirty-one are destroyed by the Zuijin defences. Half of the remainder strike decoys launched by the Devastator. The rest obliterate the Zuijin base, avenging the loss of Shokaku.

The strike was far more effective than Kaigun-Taisa Akita expected, although the mass launch was three times larger that of the previous individual attacks by the 1st Hiko Sentai. The cost of the expended missiles was more than half the build cost of the lost Akagi II class carrier.

The Vanquisher has ceased fire, so the wounded Kido Butai can approach the planet without further attack. They pause at 275,000 km, out of range of any particle lances,  but there is no sign of any ground force signature. Kaigun-Taisa Akita orders the fighters back to their carriers, then the six warships close to 60,000 km. As the Vanquisher cannot harm the Kido Butai without missiles, he considers ordering Kitakami and Tama to use their naval landing forces to board it. The Terror and its short-range armament stand in their way, so Akita orders the battlecruiser Hiei, which lost thirty-six of its crew to the laser torpedoes, to take revenge and obliterate the Zuijin base.

The first salvo does considerable damage to the Terror, then the Vanquisher launches thirty-one missiles, presumably all that were available midway through its reload cycle, that immediately detonate given the short-range. There are no longer any fighters to lessen the blow,  but even if they were present it is unlikely they would have been in the right location. Twenty-seven bomb-pumped lasers strike Hiei, causing significant internal damage and killing another twenty-nine of her crew. She returns fire and destroyz the Terror. Kitakami and Tama move in and land their marines on the hull of the Vanquisher. They blast their way through the armour and confront the ‘crew’, which are a variant of the Zuijin ground forces. Despite forty percent casualties the naval landing forces overcome their robotics foes and secure the ship.

Vanquisher class Orbital Defence Base      19,405 tons       369 Crew       2,910.6 BP       TCS 388    TH 0    EM 0
1 km/s      Armour 6-64       Shields 0-0       HTK 88      Sensors 16/16/0/0      DCR 6-3      PPV 132
Maint Life 0.27 Years     MSP 562    AFR 502%    IFR 7.0%    1YR 2,044    5YR 30,657    Max Repair 857 MSP
Magazine 3,279 / 100   
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 6 months    Morale Check Required   

Size 25 Decoy Launcher (4)     Decoy Size: 25    Hangar Reload 250 minutes    MF Reload 41 hours
Size 11 Missile Launcher (30.0% Reduction) (40)     Missile Size: 11    Rate of Fire 800
Missile Fire Control FC90-R126 (2)     Range 90.5m km    Resolution 126   ECCM-2

Active Search Sensor AS96-R126 (1)     GPS 18144     Range 96m km    Resolution 126
Thermal Sensor TH2-16 (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
EM Sensor EM2-16 (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Electronic Warfare Jammers:   Sensor 2    Fire Control 2    Missile 2   

The Zuijin have been defeated and the system conquered, but the cost has been high. Shokaku is the first Japanese carrier lost in action and Hiei is badly damaged. Four hundred and thirty-six officers and crew have been killed. In future, no Imperial Navy carriers will be allowed within a hundred million kilometres of Zuijin warships or bases. Blaming himself for the loss of Shokaku and the damage to Hiei, Kaigun-Taisa Akita resigns his commission and retires to his estates.

Once Kitakami and Tama have recovered the surviving marines from the planet, they land them on the planet to secure a Zuijin deep space tracking station and an ordnance transfer station. Both ships remain in orbit to guard the planet and the captured Vanquisher against any hitherto undetected Zuijin ships. The rest of the Kido Butai sets course for home, with Hiei rescuing the survivors from Shokaku en route. The carrier Hiryu, escorted by a light cruiser, leaves its strikegroup in Earth orbit and departs for Sendai to recover Shokaku’s fighters.

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Re: Empire of the Stars - Updates Thread
« Reply #9 on: June 28, 2024, 11:43:56 AM »
14th June 1972
The survey cruiser Amagiri completes a survey of Delta Pavonis, three transits from Earth via Proxima and Koga, then moves to probe the single outward jump point. She discovers Beta Hydri, a yellow G2-IV sub-giant star with five times the brightness of Sol, orbited by seven planets, fifty-one moons and a small asteroid belt. Beta Hydri III is an Earth-sized world with a stable orbit, gravity of 1G, a nitrogen-oxygen atmosphere of 1 atm and ice sheets covering almost half the surface. The atmosphere is just outside the breathable range, with 31% oxygen, and a small temperature rise from the current -28C would melt the ice sheets and improve the albedo, making this an ideal candidate for terraforming. A moon of the second planet, a superjovian, is a desert world with small seas and a nitrogen atmosphere of 0.45 atm, with minimal oxygen. The surface temperature is 89C.

Amagiri is almost six billion kilometres from the star, so she moves in-system until she is within range of her Gekko reconnaissance drones, then fires one at each of the two bodies. The moon is deserted. Beta Hydri III is home to a very large Zuijin fleet, including eight orbital bases and two new ship types. The orbital bases comprise three Devastators armed with light missiles, three Terror class point defence bases and two Vanquishers, armed with the deadly long-range laser torpedoes. Also in orbit are four 28,923-ton Obliterators, a type never seen before, a Ravager class escort cruiser, two 19,260-ton Decapitators, another new type, and five smaller ships of around 9600 tons. The number of bases and the large new types suggests this is probably a very important system for the Zuijin. Their total tonnage is 375,000





12th July 1972
A geological survey of Sendai II finds a ruined outpost on the surface. This is a disappointing return considering the loss of Shokaku. Daigensui-Kaigun-Taishō Takagi Razan decides that the next attack on the Zuijin must be in a system where they have a greater force, which indicates a larger ruin, but approached with far greater caution than in Sendai.

16th July 1972
Three more Shimakaze class survey cruisers, Asakaze (wind from the sea after sunrise), Minekaze (summit wind) and Yamakaze (wind from the hills), are completed in Earth orbit.

18th July 1972
Five Fukurokuju class Orbital Habitats, with a total of one million colonists, have been placed in orbit around a comet in the Hadano system. This is the first step in laying a claim to the system, in order to deny the Xiamen and Velsharoon access to the Empire of Japan.

Fukurokuju class Orbital Habitat      501,566 tons       40 Crew       270.1 BP       TCS 10,031    TH 0    EM 0
1 km/s      No Armour       Shields 0-0     HTK 28      Sensors 0/0/0/0      DCR 1-0      PPV 0
MSP 0    Max Repair 200 MSP
Colonist Berths 200,000   
Kaigun-Shōsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   

23rd August 1972
The first four Takao class heavy cruisers join the Imperial Japanese Navy. Atago, Chōkai, Maya and Takao, all of which are named after mountains, are fifty percent larger than the Nagara class light cruisers and based on the same weapons and technology as the Nagato class battleships, including shield generators. They are intended as offensive combatants, rather than the general role of the Nagaras, and will be mainly employed in supporting the Nagatos in attacks against the Zuijin.

Takao class Heavy Cruiser      27,000 tons       852 Crew       5,023.1 BP       TCS 540    TH 2,700    EM 4,260
5000 km/s    JR 3-50      Armour 4-80       Shields 142-532       HTK 172      Sensors 12/16/0/0      DCR 15-5      PPV 145
Maint Life 2.09 Years     MSP 2,744    AFR 389%    IFR 5.4%    1YR 843    5YR 12,644    Max Repair 450 MSP
Kaigun-Taisa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Komatsu KMJ-270 Jump Drive     Max Ship Size 27000 tons    Distance 50k km     Squadron Size 3

Koga-Murakama KM-900-B Ion Drive  (3)    Power 2700    Fuel Use 45.08%    Signature 900    Explosion 12%
Fuel Capacity 1,074,000 Litres    Range 15.9 billion km (36 days at full power)
Shīrudo-71A Shield Generator (2)     Recharge Time 532 seconds (0.3 per second)

Kentaro-Sakura KS-25A Far Ultraviolet Laser (10)    Range 320,000km     TS: 5,000 km/s     Power 16-4     ROF 20       
Twin Kentaro-Sakura KS-12A Far Ultraviolet Laser Turret (6x2)    Range 200,000km     TS: 16000 km/s     Power 8-8    ROF 5       
Type 27 Go-31C Turret Fire Control (2)     Max Range: 64,000 km   TS: 16,000 km/s    ECCM-2   
Type 30 Go-31D Laser Fire Control (2)     Max Range: 320,000 km   TS: 5,000 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (3)     Total Power Output 107.3    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 28 Go-71B Fighter Detection (1)     GPS 160     Range 13.8m km    Resolution 10
Type 27 Go-11C Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 30 Go-51B Passive Sensor (1)     Sensitivity 12     Detect Sig Strength 1000:  27.4m km

Electronic Warfare Jammers:   Fire Control 2    Missile 2   

30th October 1972
A new operation is underway against the Zuijin. Daigensui-Kaigun-Taishō Takagi has ordered the Kido Butai to eliminate the Zuijin in the Takahama system, four jumps from Earth via Proxima, Aomori and Kushiro. For this operation, the Kido Butai is split into two parts. The main force, under Kaigun-Taisa Sugawara Kensaku on the battleship Mutsu, comprises both battleships, all four Takao class heavy cruisers and four Nagara II-Ha light cruisers. The carrier striking force, under Kaigun-Taisho Daishi Toru on the Junyō, comprises both Taihō class carriers, the Akagi class carriers Hiryu and Kaga and both remaining Kongo class battlecruisers. Overall command of the Kido Butai falls to Kaigun-Taisa Fujimoto Kinhira on the Taihō.

Kido Butai - Kaigun-Taisa Fujimoto Kinhira (Taihō)

Carrier Striking Force – Kaigun-Taisa Daishi Toru (Junyō)
Taihō class Carrier: Junyō*, Taihō**
Akagi II class Carrier: Hiryu, Kaga
Kongo II class Battlecruiser: Hiei, Kirishima
72x Nakajima B1N 'Ryūsei' class Carrier Strike
120x Mitsubishi A1M 'Raiden' class Fighter:
36x Mitsubishi A2M2 'Shinden' class Fighter:
36x Mitsubishi A2M3 'Shinden' class Fighter:

Main Force – Kaigun-Taisa Sugawara Kensaku (Mutsu)
Nagato class Battleship: Mutsu*, Nagato
Takao class Heavy Cruiser: Atago, Chōkai, Maya, Takao
Nagara II-Ha class Light Cruiser: Isuzu, Naka, Tenryū, Yura

The known Zuijin forces in Takahama were last seen in orbit of Takahama-B II and comprised a Devastator class missile defence base, armed with ninety-one light missile launchers, a Terror class point defence base, a 19,287-ton Ravager class escort cruiser, also armed with light missiles, and three ships of 9628-tons with unknown armament: a Hunter, Impaler and Razor. After the events in Sendai, Kaigun-Taisa Fujimoto has strict instructions from both Daigensui-Kaigun-Taishō Takagi and Kaigun-Taisho Nagata to keep the carrier striking force out of Zuijin missile range. As the Kongos have proved vulnerable to Zuijin weapons, they will be utilised as carrier escorts in case a previously unknown Zuijin force appears.

Once the Kido Butai reaches a hundred million kilometres from the planet, the carriers launch their strikegroups, then the carrier striking force is detached. The seventy-two Nakajima B1N 'Ryūsei' class carrier strike craft move into close formation with the main force, while the one hundred and twenty Mitsubishi A1M 'Raiden' fighters and the seventy-two Mitsubishi A2M2 and A2M3 'Shinden' fighters take up station 110,000 km ahead of the main force. Under the shield of the 1st Air Fleet, Kaigun-Taisa Sugawara Kensaku orders the main force toward Takahama-B II.



As the main force approaches the planet, it detects active emissions from a pair of Ghost class FACs, which probably means there are more yet to be detected. The presence of the Ghosts means that the fleet will face at least one wave of laser torpedoes. A wave of eight size-11 missiles appears when the fleet reaches forty-seven million kilometres from the Zuijin ships. These turn out to be the same type of laser torpedoes as those launched by the Vengeance class, which suggests one of the smaller ships is the source. The 1st Air Fleet eliminates the threat with no hits on the fleet.

After two more waves of eight missiles, a much large wave of thirty appears, split into ten salvos of three. This wave is moving at 44,000 km/s compared to 30,000 km/s for the earlier waves. Based on the advice from his tactical and intelligence officers, Kaigun-Taisa Sugawara believes these missiles are probably from the suspected Ghost fast attack craft. The detonation point for these missiles is believed to closer to the target than those launched by the Vengeance, but data is limited. Sugawara decides to leave the fighter screen where it is and rely on ship-based weapons and shields.

The missiles detonate at approximately 68,000 km from the main force, leaving the fighters unable to contribute to point defence. The 25cm, 20cm and 12cm lasers on the ten warships kill thirteen between them and two miss. Fifteen lasers impact the shields of the battleship Mutsu, reducing them by thirteen percent. The smaller waves resume, with the fifth comprising eight missiles, but the sixth and subsequent waves increasing to sixteen. Over the next hour, Mutsu takes another fourteen shield hits.

As the armament of all the other Zuijin ships is already known, Imperial Naval Intelligence predicts the Hunter, Impaler and Razor are the source of the 8-missile salvos and designates all three as destroyers. For the eleventh wave, the Zuijin destroyers change tactics. Half the missiles detonate 110,000 km in front of the fighters, destroying a Mitsubishi A1M ‘Raiden’. The next three waves follow the same pattern, creating a trail of fighter wrecks in the wake of the Kido Butai.

By this point, the main force is five million kilometres from Takahama-B II, well within range of the Rakurai anti-ship missile. Kaigun-Taisa Fujimoto Kinhira, overall commander of the Kido Butai, gives the launch order. The seventy-two Nakajima B1Ns each launch a pair of Rakurai at the Devastator, repeating the tactic from the recent battle in Sendai. This time the defence is more capable due to the presence of the Ravager class escort cruiser. It is still not enough. Zuijin light missiles hit over a hundred missiles and decoys, following by a further fifty energy impacts at point blank range from the Terror class, but one hundred and five Rakurai reach the target and detonate, completely obliterating the Zuijin base.
 
The Nakajimas break away and head back to the carrier striking force, almost a hundred million kilometres astern. All one hundred and eighty-eight remaining fighters move into close formation with the main force and prepare to defend against light missiles from the Ravager, as the fleet continues its approach. Another wave of eight missiles appears, bypassing the main force and destroying a Nakajima B1N 'Ryūsei'.

At one point four million kilometres, the first wave of forty-two light missiles launches from the Ravager, with more salvos following every ten seconds. The first two waves attack Mutsu, with only six from each wave impacting on the battleship’s shields. The Zuijin change their targeting for wave three, as five different fighters take armour damage. Wave four scores eleven hits on eight different fighters. The Zuijin have identified the 1st Air Fleet as the Kido Butai’s first line of defence, but also its weakest link.

Wave five continues the assault on the fighter screen, destroying one, disabling a second and damaging several others. The main force of the Kido Butai is still 1.15m kilometres from Takahama-B II. Kaigun-Taisa Fujimoto briefly considers recalling the fighters to their carriers, then decides against it. They are destroying the bulk of the inbound light missiles and the Imperial Navy can afford to lose fighters more than capital ships. Besides, the recent loss of Shokaku and the preservation of her strikegroup has created a ready reserve to replace any losses.

By the time the fleet moves within a million kilometres of the planet, six fighters have been destroyed by light missiles and five more are dead in space. Another option for Kaigun-Taisa Fujimoto is releasing the fighters to charge the planet. However, the hundred and five remaining A1Ms have a top speed of 8000 km/s, while the seventy-two A2Ms. although fifty percent faster, lack the numbers to take on the Ravager and the Terror alone. The speed edge of the A1Ms over the main force is not enough to justify splitting the fleet. The fighters’ task is to cover the fleet until they can move within weapon range. In hindsight, a second Rakurai attack might have been a better option in immediate tactical terms, but there are limited supplies of missiles and larger battles to come.

Fighters continue to explode every ten seconds as the range to Takahama-B II continues to fall. As the range drops to less than half a million kilometres, the total of destroyed A1Ms has risen to thirty-one. There are no A2M losses, probably because the Zuijin are focused on the easier targets. Kaigun-Taisa Sugawara orders the two battleships and four heavy cruisers to reserve their main armament for attacking the Ravager.

The main force opens fire at 300,000 km with 25cm lasers. A single hit is scored from eighty-eight shots. The Ravager and the three Zuijin destroyer immediately break orbit, holding the range open while the Ravager continues to launch light missiles. The Terror class base and ten Ghost class fast attack craft remain in orbit. A 6,200-ton ground forces signature has been detected, which is almost certainly one or more surface-based particle lance batteries.

Kaigun-Taisa Fujimoto orders the seventy-two A2M ‘Shinden’ fighters to leave the fleet, bypass the planet and run down the Ravager. Without support from the Terror point defence base, the Ravager is more vulnerable.  The seventy-four surviving A1M ‘Raiden’ fighters remain with the main force as it halts 260,000 kilometres from the planet. Fujimoto is hoping the particle lances fires on the A2Ms, allowing his ships to destroy them from outside their own range. The Zuijin counter that move as the Ravager and the destroyers reverse course, returning to the planet and the protection of the Terror class base. There is no STO fire against the A2Ms, even though they are well within range



Kaigun-Taisa Sugawara detaches the four light cruisers from the main body and advances with his two battleships and four heavy cruisers, all of which are protected by shields. The A1Ms are released to attack, with all ships and fighters ordered to target the Terror point defence base, to reduce fighter losses at close range. The final phase of the battle is underway.



Light missiles from the Ravager start to slam into Mutsu’s shields, as she is now bereft of protection from the fighters and light cruisers and relying on the laser turrets of the main force. Moments later, the A2Ms reach point-blank range and exchange fire with the Terror, inflicting ninety-one armour hits from their cannon, but losing five of their own number. Simultaneously, another wave of light missiles strikes Mutsu. Five more fighters explode and the Terror is hit by thirty-two strength-5 hits from the main force, most of which penetrate its armour, plus another round of cannon fire from the A2Ms.

The damaged Terror manages to destroy another four fighters before it is finally overwhelmed and explodes. Attention turns to the Ravager, which has already reduced Mutsu’s shields to eighty percent with a continued barrage. The rate at which the battleship’s shields are dropping reassures Kaigun-Taisa Fujimoto that holding the fighters with the fleet for the approach was the right decision. Kaigun-Taisa Sugawara halts the main force halts at 120,000 kilometres, as he is still not convinced the ground signature does not include particle lances. Although his ships are within range, their shields should provide good protection at that distance.

The A1Ms join the A2Ms in orbit of Takahama II and the Ravager is obliterated in a storm of cannon fire. Three destroyers and ten fast attack craft remain. Kaigun-Taisa Fujimoto orders all ships and fighters to fire at will. The battleships and heavy cruisers change their laser turrets to offensive fire, while the fighters strafe every available target. Within thirty seconds, every Zuijin ship has been destroyed. They did not attempt to break orbit and flee.

Kaigun-Taisa Sugawara takes Nagato and Mutsu closer to the planet, finding it hard to believe any surface-based weapons have remained quiet while the Zuijin ships were massacred, but still not willing to approach closer within anything smaller than the two battleships. They move into orbit unmolested, so Kaigun-Taisa Fujimoto finally declares the system secure, except for the Zuijin ground forces. While the Kido Butai has lost fifty-six fighters, including fourteen of the newer A2Ms, with several more damaged, and expended a hundred and forty-four Rakurai anti-ship missiles, none of the warships or carriers has suffered any damage and another system has been cleansed of Zuijin ships.

13th January 1973
The growing colony and naval base at Truk forms a bulwark against the Covenant of Velsharoon. The initial contact system between the Empire of Japan and the Covenant was Minato, located between Truk and Proxima. Both Minato and Proxima are planetless, while Truk is three jumps from the Velsharoon home world and in a position to cut off six other outward systems from Covenant control, making it an ideal candidate for Daigensui-Kaigun-Taishō Takagi’s choke point strategy.

The focus of the Imperial Navy’s survey efforts has moved away from Palau and Bikini, which lie between Truk and the Velsharoon system, and into the systems beyond Samoa, which connects to Truk’s outermost jump point. Daigensui-Kaigun-Taishō Takagi has decided that henceforth any Covenant ship entering Truk will be asked to leave, so Samoa and the five systems outward from its two jump points are to be treated as the territory of the Empire of Japan. Whether the Covenant of Velsharoon will agree to that remains to be seen.

In Fiji, one transit out from Samoa, the survey cruiser Harukaze transits a newly discovered jump point, emerging two billion kilometres from a red dwarf star, orbited by a single unremarkable planet. Three alien ships from a previously unknown alien race are stationed on the jump point, which is already stabilised. The largest is 72,746 tons and designated as Kaluga class by Imperial Naval Intelligence. It is accompanied by a 17,344-ton Sverdlov and a 8669-ton Baku. The system is named Sakhalin, using the Pacific island theme used for Covenant and Xiamen territory, but moving to the north-west Pacific to distinguish the territory of a new alien race. Harukaze does not come under fire, so she remains in place and requests support.

The Fiji system, from where Harukaze transited into Sakhalin, has an orange K0-V primary, eight planets, sixty-four moons and over three hundred asteroids. Despite all that real estate, it is mineral poor, with one important exception. Fiji IV is a gas giant with twenty-eight million tons of accessibility 1.0 Sorium. There are only four other gas giants with similar accessibility. Sapporo IV, which lies beyond the Zuijin system of Kagoshima, has only 178,000 litres and is also in the territory of the mysterious Sapporo aliens. Neptune, in the Sol system, is the current fuel source of the Imperial Navy, but a third of the deposit has already been consumed and it is down to 474,000 tons. Soon, that accessibility will start to decrease.

Sendai III, in a recently conquered Zuijin system, has almost a million tons, while Gamagōri IV, four transits from Sol via Proxima, Epsilon Indi and Mitaka, has three million tons. Neither has a moon that might easily support a naval base to protect the harvesters. The first moon of Fiji IV  has a gravity of 0.113G, a temperature of -94C and a diameter of 3600 km, making it relatively easy to terraform. While Sendai and Gamagōri have potential, Fiji IV is by far the best option for the long-term fuel supply of the Empire. On that basis, Daigensui-Kaigun-Taishō Takagi declares the first moon of Fiji IV a high priority colonization target, both to secure the fuel supply and cut-off any encroachment into Japanese territory from the new aliens.

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Re: Empire of the Stars - Updates Thread
« Reply #10 on: July 01, 2024, 03:14:50 AM »
24th January 1973
A ship from the Covenant of Velsharoon is detected in Lalande for the first time. Lalande is only two jumps from Earth, via Okami, and two jumps inward from Hadano, via Yao. Development of the orbital comet colony in Hadano, to the point where the system can be claimed, is becoming ever more important.

7th March 1973
Deep space tracking system on Earth detect a ship from a new alien race within the Mars-Jupiter asteroid belt, heading in-system. As there are sensor buoys on all six Solarian jump points, either the ship has been in Sol since before they were emplaced, which seems extremely unlikely, or there is a seventh, previously dormant, jump point. Akagi and Soryu break out and a set a course for the contact, escorted by the two Kongo class battlecruisers.

The contact, designated as Incheon class, is moving sunward at 5162 km/s, slightly faster than the intercepting carriers and battlecruisers. When the range drops to one hundred and sixty million kilometres, Akagi launches six Mitsubishi A2M ‘Shinden’ fighters with orders to shadow the target. As the fighters move within sixty-five million kilometres, with the carriers still more than a hundred million kilometres away, the Incheon reverses course and heads out-system. The fighters have almost a 7000 km/s speed advantage, so they close in quickly.

Once within two million kilometres, the resolution-1 sensors of the A2Ms achieve an active contact of 989 tons. The Incheon continues retreating without any attempt at communication. While the fighters can shadow the alien ship for a while, they are already down to 1/3rd fuel. Daigensui-Kaigun-Taishō Takagi, overseeing the operation due to the potential threat to Sol, passes an order through the chain of command to continue shadowing until down to ten percent fuel, then move to point-blank range. Finding the new jump point is Takagi’s priority, but failing that he at least wants to know if the aliens are immediately hostile.

The fighters follow for three and a half hours, then move closer as their fuel drops below ten percent. The Incheon opens fire at 158,000 km with three railguns, destroying one fighter and damaging another. Imperial Naval Intelligence estimates the railguns to be 20cm calibre, which means the Incheon is far larger in reality than its active signature would suggest. The Empire of Japan does not possess any cloaking technology, but it seems the new aliens have an advanced cloaking capability. The surviving fighters back off to 250,000 km and resume their shadowing mission.

Less than a minute after the loss of the fighter, a new alien ship is detected. Designated as Jinhae class, it on roughly the same heading as the first ship, but much further out - at almost a billion kilometres from Sol – and has a thermal signature of 5000, compared to only 244 for the Incheon. Even though the Jinhae has commercial engines, such a large vessel represents a much greater potential threat than the Incheon, which initially appeared to be a scout. Daigensui-Kaigun-Taishō Takagi orders the immediate deployment of the recently operational 2nd Hiko Sentai, with twenty-four Mitsubishi G1M2 'Donryu' long-range strike craft, on a mission to strike the Jinhae. He also orders the dispatch of a second fleet, comprising the Nagato class battleships, the Taihō class carriers and four Nagara II-Ha class light cruisers, to support Akagi and Soryu.



Moments later, brief active emissions are detected from a second Incheon in company with the Jinhae. The threat is growing quickly. The five A2Ms shadowing the first Incheon maintain their course for another ninety minutes, then are forced to break off and wait for Akagi to pick them up. The Incheon disappears from sensors. After recovering the fighters, Akagi and Soryu, plus their battlecruiser escorts, set course for the location where the Jinhae appeared. The Jinhae itself is heading out-system and can still be detected by Earth-based tracking stations, which suggests its original location could be the jump point, although why the transit wasn’t detected remains a mystery.

After the carriers arrive at a point 250,000 km from the initial contact location, keeping their distance to avoid any surprises, the Jinhae reverses course and heads back toward them. An Aichi E1A2 dispatched from Akagi establishes an active contact, revealing its size as 124,782-tons, but continues closing to detect any cloaked escorts. At 800,000 km, the E1A2 confirms the presence of the second Incheon, along with two more ships of a new type, designated as Bucheon class, which, like the Incheon, register as 989 tons and are likely cloaked.

The 2nd Hiko Sentai moves past Akagi and Soryu and closes to within five million kilometres of the Jinhae and its escorts. The Mitsubishi G1M2 'Donryu' strike craft carry a total of forty-eight Rakurai-Ro anti-ship missiles. As the Jinhae is too slow to escape, Daigensui-Kaigun-Taishō Takagi orders the G1M2s to split their missiles between the Incheon and one of the Bucheon, in order to determine their defensive capabilities. They have to move within 400,000 kilometres of the targets to achieve a fire control lock.



There is no defensive light missile fire. Instead, two strength-4 and thirteen strength-1 energy weapon hits are registered on a mixture of missiles and decoys, which suggests the Bucheon is equipped with point defence railguns similar to those on the Nagaras. Thirty-five Rakurai reach their targets, eighteen of which strike decoys. The rest destroy the Bucheon and inflict six internal hits on the Incheon, leaving it dead in space. While the new aliens may have fast ships and cloaking technology, they do not seem to be well-protected. The Jinhae and the remaining Bucheon continue toward the Akagi/Soryu group. The E1A2 remains near the crippled Incheon to maintain a sensor contact, while the G1M2s of the 2nd Hiko Sentai return to Earth to celebrate their success. There were no life pods from the Bucheon, although the armour penetrating hits did release atmospheric gases. The crew could be robotic, like the Zuijin, but it is also possible their ships do not carry life pods to avoid their crews being captured.

Taihō, Junyō and their escorting battleships and light cruisers combine with the Akagi group near the arrival point of the Jinhae. Except for the light cruisers Tama and Kitakami, which are detached to swing around the approaching Jinhae and deal with the crippled Incheon, the fleet is officially designated as the Kido Butai. The formidable force is extreme overkill for the known alien ships, but there is the possibility that a much stronger fleet may exit the as-yet-undetected jump point.

Kido Butai
Taihō class Carrier: Junyō, Taihō
Akagi II class Carrier: Akagi, Soryu
Nagato class Battleship: Mutsu, Nagato
Kongo II class Battlecruiser: Hiei, Kirishima
Nagara II-Ha class Light Cruiser: Isuzu, Yura

Tama and Kitakami reach the Incheon before the Jinhae is within range of the Kido Butai. Under orders to capture the damaged ship if possible, they move cautiously into its known weapon range without coming under fire, then close to point blank range and deploy their naval landing forces. Nine minutes of fierce combat is sufficient to capture the ship with the loss of nine marines. The aliens are tell, slender humanoids in gothic-style silver armour. The ship itself appears to be designed for raiding, given its cloak and minimal armour, and is comparable to Imperial technology, with the exception of its advanced cloaking device.

Incheon class Raider      9,891 tons       295 Crew       2,369.2 BP       TCS 20    TH 244    EM 0
5138 km/s      Armour 1-41       Shields 0-0       HTK 61      Sensors 24/8/0/0      DCR 4-4      PPV 21
Maint Life 1.01 Years     MSP 598    AFR 196%    IFR 2.7%    1YR 589    5YR 8,840    Max Repair 544.5 MSP
Magazine 0 / 100   
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 6 months    Morale Check Required   

Ion Drive  EP508.25 (2)    Power 1016.5    Fuel Use 36.45%    Signature 121.9800    Explosion 10%
Fuel Capacity 700,000 Litres    Range 34.9 billion km (78 days at full power)

20cm Railgun V40/C4 (3x4)    Range 160,000km     TS: 5,138 km/s     Power 12-4     ROF 15       
Beam Fire Control R256-TS5200 (2)     Max Range: 256,000 km   TS: 5,200 km/s    ECCM-2   
Magnetic Mirror Fusion Reactor R4 (3)     Total Power Output 12.8    Exp 5%

Size 25 Decoy Launcher (4)     Decoy Size: 25    Hangar Reload 250 minutes    MF Reload 41 hours

Active Search Sensor AS54-R120 (1)     GPS 5760     Range 54.5m km    Resolution 120
Active Search Sensor AS9-R1 (1)     GPS 32     Range 9m km    MCR 812.4k km    Resolution 1
Thermal Sensor TH3-24 (1)     Sensitivity 24     Detect Sig Strength 1000:  38.7m km
EM Sensor EM1-8 (1)     Sensitivity 8     Detect Sig Strength 1000:  22.4m km

Cloaking Device: Class cross-section reduced to 10.0% of normal
Electronic Warfare Jammers:   Fire Control 2    Missile 2   

The Jinhae and its remaining Bucheon class escort continue to approach the suspected location of the previously dormant jump point. Once within four million kilometres, the light cruisers Yura and Isuzu move out to meet them, with orders to capture the larger ship. The rest of the Kido Butai remains on watch for additional transiting ships. Two volleys are sufficient to destroy the Bucheon, which seems just as fragile as the Incheon, then they begin firing a single laser each at the Jinhae, trying to slow it down. Every hit penetrates the armour, so it appears that minimal passive defences is a general design principle for these new aliens. The ship gradually slows under fire, probably due to having many small engines. Unfortunately, one of those hits causes a chain of secondary explosions that destroys the Jinhae. Yura and Isuzu rejoin the Kido Butai.

There are no alien ships remaining and there are no further transits through the suspected jump point. Having analysed all the data, Imperial Naval Intelligence suspect the aliens, designated as the Wokou Raiders, after pirates that raided China, Japan and Korea in the 14th to 16th centuries, may be using some other technology rather than jump drives. The arrival of the Jinhae was well within range of Earth’s planetary sensors, but no transit was detected. The Kido Butai will remain in place for now, but ships will be sent home for overhaul as the chance of a new arrival decrease. If INI is correct, the Wokou could appear in some other location within Sol, or another system in the Empire, so the Imperial Japanese Navy must be prepared to meet a more general threat.

28th March 1973
Full communications are established with the aliens in Sakhalin. They are known as Zharovians. Based on limited information from the initial diplomatic exchanges, their culture is dedicated to the teachings of a long-dead philosopher named Zharov, resulting in the official name of the state being the Followers of Zharov. The Zharovians are large, powerful humanoids with hairless, transparent skin, displaying their impressive musculature and a menacing array of teeth. A Hosho II diplomatic ship has arrived in Sakhalin, allowing Harukaze to begin a survey of the system.



4th April 1973
A ground invasion of Takahama II has eliminated the Zuijin defenders. The battle was hard fought by the 3rd, 6th and 8th divisions in very difficult, mountainous terrain. An orbital survey of Takahama II reveals a ruined settlement and an ancient construct. After the surface is secured, two Xenoarchaeological regiments are landed to begin their work.

28th April 1973
Forty-four recovery sites are identified on Takahama II. Study of the ancient construct continues.

18th June 1973
After three months with no sign of any further transit from the Wokou, most of the Kido Butai has returned to Earth, leaving both battlecruisers and two light cruisers at the initial detection point of the Jinhae.

20th June 1973
Harukaze discovers a jump point in Sakhalin and dispatches her Aichi E1A3 scout to investigate. As the scout approaches the jump point, it detects a Zharovian ship of 7714 tons, designated as Vorkuta class.



After transiting, the scout arrives two billion kilometres from a red dwarf star with five planets, twenty-one moons and two hundred and sixty-five asteroids, all within two hundred million kilometres of the primary. The system is named Paramushir, after an island in the north-west Pacific. Paramushir II has a thin nitrogen-oxygen atmosphere and a small ice sheet, with the land area dominated by Tundra. With a maximum range of just over five billion kilometres, the scout cannot investigate and still make it back to Harukaze. Instead, a Kyushu M1W 'Shiragiku' that is surveying Sakhalin’s sole planet will move into Paramushir after its current task is completed.

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Re: Empire of the Stars - Updates Thread
« Reply #11 on: July 03, 2024, 02:33:23 PM »
22nd June 1973
As the Scimitar Empire has not sent a ship into Tsushima for ten years, an old Aichi E1A with a volunteer crew is sent into the Scimitar system. Similar reconnaissance missions in recent years have not ended well. This time, there are no ships on the far side of the jump point. This presents an opportunity to deal with the closest alien threat to Earth, so the Kido Butai is reformed and dispatched immediately to join the scout. Only three light cruisers remain in the Tsushima – Scimitar picket force, so they will have to deal with any Scimitaran ships that appear before the Kido Butai arrives.

1st July 1973
The Kido Butai arrives at the Tsushima – Scimitar jump point, with no sign of any Scimitaran ships. Due to the size of the fleet, it is once again split into the carrier striking force, commanded by Kaigun-Taisa Fujimoto Kinhira on the Taiho and the Main Force, commanded by Kaigun-Taisa Sakubara Kogo, on the heavy cruiser Takao. Overall command of the Kido Butai is held by Kaigun-Taisa Kozu Kintaro on the carrier Ryujo.

Kido Butai – Kaigun-Taisa Kozu Kintaro

Carrier Striking Force - Kaigun-Taisa Fujimoto Kinhir¬¬a
Taihō class Carrier: Junyō, Taihō*
Akagi II class Carrier: Ryujo**, Zuiho
Kongo II class Battlecruiser: Hiei, Kirishima

Main Force - Kaigun-Taisa Sakubara Kogo
Nagato class Battleship: Mutsu, Nagato
Takao class Heavy Cruiser: Atago, Chōkai, Maya, Takao*
Nagara II-Ro class Light Cruiser: Agano, Kashii, Kashima, Niitaka
Nagara II-Ha class Light Cruiser: Kuma, Yūbari

The fleet was rushed to the jump point to take advantage of the Scimitar Empire neglecting to guard the jump point, but with no sign of hostile warships, Kaigun-Taisa Kozu decides to take his time and prepare properly. There are still five carriers at Earth, with two close to completing overhauls. Therefore he decides to wait for those two extra carriers and use the time to move replenishment ships into position. In addition, the 1st Hiko Sentai is recalled from its current deployment on New Osaka and will be based at Earth along with the 2nd Hiko Sentai, so they can support the Kido Butai with long-range strikes. Four survey cruisers are recalled from operations in various parts of the Empire, so they can conduct survey operations in the Scimitar system, although it will be at least six weeks before the first one arrives.

22nd July 1973
A colony of 500,000 is established on the first moon of Fiji IV, the first step to ensuring the Followers of Zharov do not move beyond this system and to securing the vast Sorium reserves of the moon’s parent gas giant.

23rd July 1973
A Kyushu M1W 'Shiragiku' arrives in orbit of Paramushir II, one transit outward from the contact system of Sakhalin, and detects eight Zharovian ships in orbit, two 17,382-ton Saransk class and six 155,866-ton Dzerzinsk class, plus a 30,000-ton ground forces signature. There is no sign of a population.

31st July 1973
The Kido Butai is refuelled and replenishment ships are on station at the Tsushima – Scimitar jump point, along a salvage vessel and accompanying freighter. A Kyushu M1W 'Shiragiku' transits into Scimitar and launches a pair of Shūsui reconnaissance drones. One is targeted on the presumed home world of the Scimitar Empire, the fourth moon of the innermost planet, a superjovian with a highly eccentric orbit, which has a nitrogen – oxygen atmosphere. The other drone is targeted on the second planet, another superjovian, which has a moon with a large ice sheet. The Scimitar home world is at its closest point to the G5-V primary, almost as close as Mercury in the Sol system, and the oceans are boiling into the atmosphere due to a surface temperature exceeding two hundred degrees. They will condense again as the parent superjovian moves away from the star.



The drone targeted on the second planet is the first to move within sensor range, detecting Scimitaran populations on the first and third moons, both with fleets in orbit. The first moon has nine ships in orbit, comprising two 166,508 ton Vultures, possibly commercial, and seven ships between 16,883 and 36,725 tons, which are probably military, although one – a Thunderhawk – is about ten percent larger than any of the others. The third moon has a single Demonhawk of 180,763 tons, eleven of the 36,725 Thunderhawks and five ships between 33,777-tons and 16,855 tons. Two ships orbiting each moon, Raptor and Gyrfalcon classes, are known warships. The population EM signatures are 355 and 1350 respectively. The drone is destroyed two million kilometres from the Scimitar colonies, which suggests the Scimitaran light missiles are longer-ranged than those of the Zuijin.

Scimitar II – Moon 1
2x Vulture: 166,508-tons
1x Thunderhawk: 36,725-tons
1x BC Raptor: 33,777-tons – armed with 24 railguns.
1x CLE Gyrfalcon: 33,768 tons – armed with 61 light missile launchers
1x Merlin: 32,154-tons
2x Warbird: 16,883 tons

Scimitar II – Moon 3
1x Demonhawk: 180,763 tons
11x Thunderhawk: 36,725 tons
1x BC Raptor: 33,777-tons
1x CLE Gyrfalcon: 33,768 tons
1x Sunhawk: 16,855 tons
1x Harrier: 16,855 tons
1x Peregrine: 16,855 tons.



The second drone drove detects an EM signature of 114,000 as it approaches the fourth moon of the first planet, confirming this as the Scimitaran home world. This is approximately sixty percent of the EM signature of Earth. As it draws closer, a large fleet of fifty-six ships is detected, ranging in size from 7,333 tons to over 50,000 tons. There are also twelve War Eagle class ships in orbit of the superjovian, which are potentially fuel harvesters. Once again, the drone is destroyed two million kilometres from its target.

Scimitar I
12x War Eagle: 53,580-tons

Scimitar I – Moon 4
4x Solarhawk: 50,654-tons
2x Buzzard: 49,065 tons
5x CLE Gyrfalcon: 33,768 tons
2x Nightfalcon: 33,755 tons
3x Sparrowhawk: 33,697 tons
3x Falconet: 33,642 tons
3x King Eagle: 33,449 tons
2x Firehawk: 32,376 tons
3x Stormhawk: 32,376 tons
12x Flamehawk: 24,089 tons
2x Seahawk: 19,782 tons
3x Warhawk: 19,782 tons
6x Warbird: 16,883 tons
1x Peregrine: 16,855 tons.
1x Goshawk: 12,789-tons
4x Red Kite: 7,333 tons
4x Condor – no active contact.



The two superjovians with Scimitaran populations on their moons are two hundred and eighty-five million kilometres apart, which provides an opportunity for the Imperial Japanese Navy to defeat them in detail. If the Kido Butai can attack the moons of Scimitar II without interference from the main Scimitaran fleet close to Scimitar I, it would improve the situation before the final decisive battle. Kaigun-Taisa Kozu Kintaro lays out his plans for his immediate superior, Kaigun-Taishō Nagata and the overall commander of the Imperial Navy, Daigensui-Kaigun-Taishō Takagi.

Takagi decides the plan can wait for a couple of weeks, as he has information that Kaigun-Taisa Kozu does not. The second pair of Nagato class battleships, Ise and Hyūga, will launch within a few days and can be added to the operation. In the meantime, the 1st and 2nd Hiko Sentai will launch raids to find out more about the Scimitaran defences.

15th August 1973
The 2nd Hiko Sentai launches the first raid, transiting into the Scimitar system, then conducting an intra-system jump from the Lagrange point of Scimitar IV to that of Scimitar I, before closing in on the moons of Scimitar II. As the twenty-four Mitsubishi G1M2 'Donryu' and a single Mitsubishi E2M 'Shiun' close on their target, they detect a single 36,725-ton Thunderhawk class ahead of them, moving at 871 km/s. This confirms the suspicions of INI that the Thunderhawk is not a warship and improves the odds a little more. Close behind the Thunderhawk is the Demonhawk seen in orbit of the third moon of Scimitar II, moving at 885 km/s, then a further eleven Thunderhawks. The 2nd Hiko Sentai gives the commercial shipping a wide berth to avoid revealing their position.



Seeing an opportunity, Kaigun-Taisa Kozu orders the light cruiser Kuma, one of two Nagara II-Ha class ships in the Kido Butai, to enter Scimitar and make the same Lagrange jump to the inner system as the 2nd Hiko Sentai. Her captain is Kaigun-Chusa Lewis Shaw, a native of Great Britain and one of the first non-Japanese warship commanders. His mission is simple. Destroy as much commercial shipping as possible and withdraw if confronted by Scimitaran warships.

Meanwhile, the 2nd Hiko Sentai moves within active sensor range of Scimitar II and discovers that the fleet that was in orbit of the third moon has vanished. Apart from the Thunderhawk detected moving away, the same ships remain in orbit of the first moon. Given the damage caused by the light missile ships of the Zuijin, the 2nd Hiko Sentai targets the Gyrfalcon, a known light missile ship of the Scimitar Empire, and launches its forty-eight Rakurai-Ro anti-ship missiles. The fleet in orbit begins moving away from the moon at 999 km/s, which is probably the maximum speed of the larger 166,000 ton Vultures. Light missiles begin hitting the Rakurai at just under 900,000 km. Possibly, the longer range interception of the Shūsui reconnaissance drones was due to their much slower speed compared to the Rakurai.



Very few Rakurai are hit by defensive missiles, compared to the hit rate of the Zuijin, which suggests the Scimitar Empire has significantly lower technology. There is some point-blank defensive fire from the Scimitaran fleet, with eleven strength-1 energy weapon impacts, although with limited effectiveness. Forty-one of the forty-eight missiles detonate their strength-12 warheads, fifteen of which strike decoys. Twenty-six hit the Gyrfalcon, with nine penetrating its armour. The ships continue away from the planet at 999 km/s, so if the Gyrfalcon suffered engine damage it was not sufficient to drop it below its previous speed.

As the 2nd Hiko Sentai withdraws, they detect the Demonhawk and the Thunderhawks once again. The Mitsubishi E2M 'Shiun' breaks away to shadow them while the Mitsubishi G1M2 'Donryu' head for home. If the E2M can maintain contact, it will make it much easier for the light cruiser Kuma to destroy them. Five hours later, with the rest of the 2nd Hiko Sentai out of danger, the E2M detects a large Scimitaran fleet ahead of the commercial ships on a reciprocal heading. The fleet of nineteen ships is moving at 2936 km/s and includes vessels from both the home world and force that was previously in orbit of the third moon of Scimitar II, which means those types are likely to be warships.

4x Solarhawk: 50,654-tons
1x BC Raptor: 33,777-tons
4x CLE Gyrfalcon: 33,768 tons
2x Nightfalcon: 33,755 tons
4x Warbird: 16,883 tons
1x Sunhawk: 16,855 tons
1x Harrier: 16,855 tons
2x Peregrine: 16,855 tons.



The E2M 'Shiun' moves on a perpendicular course to maintain contact while avoiding the approaching fleet. Without warning, it is struck by a missile with a strength-6 warhead that penetrates its armour and disables its engine. The Scimitaran fleet is still ten million kilometres away, which means the 500-ton E2M was detected and locked on with a fire control at a greater distance than the range of the Rakurai-Ro anti-ship missile, which has grave consequences for the likely success of missile strikes against Scimitaran ships. The E2M is armed with a single Gekko reconnaissance drone, which it fires at the Scimitaran home world to gain whatever intelligence is can.

Fourteen minutes later a second salvo destroys the ‘Shiun’, but the Gekko maintains contacts with all the alien ships, at least in the short term. The warships are apparently heading back to the home world, while the much slower commercial vessels seem to be on course for the Lagrange point of Scimitar I, the same place that Kuma plans to jump to. Based on their speed, they will arrive in a little under two days. At current speed Kuma will arrive in thirty-one hours so Kaigun-Chusa Shaw decides to wait for a few hours at the Lagrange point of Scimitar IV before jumping. The Gekko soon leaves the Scimitaran fleet behind and arrives at their home world a few hours later, confirming the much diminished fleet in orbit before being destroyed.



As Kuma heads out to the Lagrange point of Scimitar IV, she passes the returning 2nd Hiko Sentai on their return journey. Three hundred million kilometres from her destination, she detects four Red Kite class ships, apparently following in the wake of the Japanese strike craft at 2367 km/s. Little is known about this class, except that one ship was detected in orbit of Tsushima I in the days before hostilities broke out and was never seen again. On the assumption they are scouts or survey ships, rather than warships, Kaigun-Chusa Shaw gives the order to close and attack. Kuma is closing in when she detects a second ship in their wake: a Goshawk of 12,789-tons moving at 2001 km/s, slower than the warships that destroyed the E2M. Kuma is only seven million kilometres from the Red Kites, while the Goshawk is on the edge of sensor range of sixty-six million, so she continues on course.



Meanwhile in Tsushima, the Carrier Striking Force has moved to the orbit of the Imperial colony on Tsushima II. The Japanese carrier designs only have an endurance of three months, compared to twelve months for the combat vessels, so Kaigun-Taisa Kozu pulled them back for some shore leave. The plan was to wait for the reinforcements and the results of the raiding and scouting missions before rejoining the Main Force at the Scimitar jump point. With the Scimitar Empire showing signs of heading to the Tsushima jump point, the shore leave is cancelled with immediate effect. However, they are eight days away. In the meantime, the Main Force will have to fight any battles before they arrive.

Kuma opens fire on a Red Kite from 248,000 km. While she only scores a single strength-2 hit, that hit penetrates the armour, almost certainly proving the theory that the Red Kites are not warships. She continues to close and the second volley inflicts five hits, slowing the ship by half. Kuma changes targets and the second Red Kite disintegrates after two secondary explosions. Kuma disables the third ship with a single volley, leaving it dead in space, then destroys the fourth with two broadsides. Kaigun-Chusa Shaw considers using his naval landing force to attempt a boarding action on the disabled ship, but does not want to risk his marines with one and possibly more ships arriving. Two more salvos from Kuma’s 20cm lasers and the number of Scimitaran wrecks increases to four.

Kaigun-Chusa Shaw orders his helmsman to intercept the Goshawk, which is still on course for the Tsushima jump point. Kuma fires its first volley at 185,000 km, scoring eight strength-2 hits and slowing the alien ship by fifty percent. Ten seconds later, the follow-up attack disables its engines. There is still no sign of Scimitaran warships, so Shaw decides to capture the ship, as one important addition factor has entered the equation since the destruction of the four Red Kites. A pair of Imperial Navy tugs have arrived at the Tsushima – Scimitar jump point.

Kuma moves alongside the Goshawk and her naval landing force boards it, securing the ship within a few minutes without any losses. The ship is a tanker, with commercial-grade nuclear pulse engines. While it is obsolete compared to the latest Imperial Navy designs, it can be put into service moving fuel from Neptune to Earth. Kuma recovers her marines, then the tug Shokai Maru enters the Scimitar system to tow the Goshawk back to Earth.

Goshawk class Tanker      12,790 tons       109 Crew       355 BP       TCS 256    TH 512    EM 0
2001 km/s      Armour 1-48       Shields 0-0       HTK 51      Sensors 6/6/0/0      DCR 1-0      PPV 0
MSP 17    Max Repair 52.9 MSP
Kaigun-Shōsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   

Commercial Nuclear Pulse Engine  EP128.0 (4)    Power 512    Fuel Use 4.05%    Signature 128    Explosion 4%
Fuel Capacity 3,000,000 Litres    Range 1,042.8 billion km (6031 days at full power)
Refuelling Capability: 60,000 litres per hour     Complete Refuel 50 hours

CIWS-120 (1x4)    Range 1000 km     TS: 12,000 km/s     ROF 5       
Thermal Sensor TH1-6 (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km
EM Sensor EM1-6 (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km

Just two minutes after Kuma recovers her naval landing force, five more Scimitaran ships appear on her active sensors, on course from the Lagrange point of Scimitar IV to the Tsushima jump point. The three Warhawks and two Seahawks are 19,782-tons and travelling at 1516 km/s.



Given their speed, it seems unlikely they are warships, although these are the only known ships in the two classes and their speed and size are the only intelligence available. Kaigun-Chusa Shaw requests permission to close and attack on the basis that if they are warships, their fire control technology is unlikely to match the Nagara II-Ha’s maximum weapon range of 320,000 km. Kaigun-Taisa Kozu gives his aggressive young subordinate discretion to fight his ship as he sees fit. As Kuma moves toward the Scimitaran ships, a further twelve ships of the Flamehawk class, 24,089 tons and travelling at 1328 km/s, appear on the edge of sensor range.



The destination and intention of the Scimitaran ships is unknown, but as far as Kaigun-Chusa Shaw is concerned he was ordered to conduct a commerce raid, so his ship will carry out that mission until forced to retreat. The Warhawks and Seahawks both prove to have commercial engines, to Kuma blasts them all to pieces and heads for the twelve Flamehawks. A pair of Buzzard class ships of 49.065-tons, with a speed of 1302 km/s, have also entered sensor range.

Kuma moves to almost point-blank range of the Flamehawks, to reduce the number of shots necessary, and destroys each ship with a single salvo. She runs down the two Buzzards and quickly eliminates them both. On Kuma’s bridge, there is a sense of disbelief at the carnage wreaked by the light cruiser. Since entering the Scimitar system, she has destroyed twenty-three ships totalling more than half a million tons.

Kuma is now just one hundred and fifty million kilometres from the Scimitar IV Lagrange point. Kaigun-Chusa Shaw is ready to make the jump and look for new targets in the inner system, but Kaigun-Taisa Kozu is wary of the large Scimitaran fleet that destroyed the E2M. Instead, he orders Kuma to move within sensor range of the Lagrange point, destroy any commercial shipping that tries to reach the Tsushima jump point and retreat in the face of any significant force of Scimitaran warships. While Kuma might prevail in an energy engagement against a larger, lower tech opponent, she is still vulnerable to a large-scale missile attack. Kozu wishes to move the entire Kido Butai into the inner system, but will not proceed until the carriers join his capital ships at the jump point.

En route to her picket location, Kuma encounters a fleet of two Firehawks and three Stormhawks. Both classes are 32,376-tons and have a speed of 926 km/s. She closes in for the kill. As the light cruiser moves within eleven million kilometres of her new targets, she detects a new contact at the edge of sensor range, heading in-system. The Strikehawk is 10,432 tons, with a speed of 3566 km/s and strong active sensor emissions. The Scimitaran Navy has finally made an appearance.



Kaigun-Chusa Shaw decides to eliminate the commercial ships ahead of him and then evaluate the situation. If no more warships arrive then, from his perspective, the Strikehawk does not constitute a ‘significant force’. With the Firehawks and Stormhawks just half a million kilometres away, the Kuma’s EM sensor detects emissions from two Condor class ships of unknown size moving at 4045 km/s at a range of forty-three million kilometres. As they are not on active sensors, they are likely small ships, or possibly cloaked, although nothing the Scimitar Empire has shown so far suggests they may have cloaking technology. The most likely scenario is a squadron of fast attack craft trying to launch a missile attack. Kaigun-Chusa Shaw is not abandoning his approach when the targets are so close, so he decides to continue the attack, then reverse course to assess the situation.



The two Firehawks and three Stormhawks are destroyed as quickly as their predecessors. As the last one explodes, the emissions from the Condors reappear at forty-one million kilometres. Kaigun-Chusa Shaw is faced with a dilemma. If there are only a few FACs, or the missiles are low tech, Kuma could probably ride out the attack and run the Condors down, but she is only one ship and a large missile wave could overwhelm her. If she is damaged and cannot run, the closest help is over eight hundred million kilometres away.

Just as Kaigun-Chusa Shaw is about to order ‘damn the torpedoes’ and go after the Strikehawk, Kaigun-Taisa Kozu orders him to pull back. Instead, the Main Force will not wait for the Carrier Striking Force or the second pair of Nagatos and instead will move to meet Kuma, eliminating any Scimitaran ships and securing the Scimitar IV Lagrange point. The carriers and the other two battleships will catch up as soon as they can.

Kido Butai – Main Force
Nagato class Battleship: Mutsu, Nagato
Takao class Heavy Cruiser: Atago, Chōkai, Maya, Takao
Nagara II-Ro class Light Cruiser: Agano, Kashii, Kashima, Niitaka
Nagara II-Ha class Light Cruiser: Yūbari

Kuma picks up the survivors from the most recently destroyed Scimitaran ships and starts moving back toward the Tsushima jump point, collecting other survivors as she retraces her previous course and pausing occasionally to monitor the pursuing Strikehawk and the emissions from the presumed fast attack craft. Unfortunately, the captured, disabled Goshawk class tanker has to be left behind as the tug is over a day away. By the time she picks up the life pods from the Red Kites, she has over seventeen hundred Scimitar prisoners on board, straining the life support systems intended for her crew of six hundred. A hundred million kilometres astern, and detected only by its sensor emissions, the Strikehawk passes close to the disabled Goshawk, but does not fire.

Twelve hours after destroying the Firehawks and Stormhawks, Kuma reverses course once again and takes her place in the Main Force of the Kido Butai as it heads for the Scimitar IV Lagrange point. Four hours later, the Main Force intercepts the Strikehawk, which still does not fire. In recognition of her recent stunning success, Kaigun-Taisa Kozu gives Kuma the honour of the kill. The Condor class ships are nowhere to be seen. The Strikehawk is designated as a scout.

What puzzles Kaigun-Taisa Kozu, and all the tactical and intelligence officers in the Kido Butai and at Combined Fleet Headquarters, is why the Scimitar Empire is sending so many commercial-engined and unarmed ships toward the Tsushima jump point, yet not deploying warships in that direction. It is almost as if the ships are trying to flee the system by any means necessary, which makes no sense at all.

When the main force reaches a hundred and eighty million kilometres from the jump point, it detects the 180,000 ton Demonhawk detected earlier in the inner system, moving at 885 km/s. Four million kilometres behind it are a dozen Thunderhawks, with commercial engines and a speed of 871 km/s. Fifty million kilometres beyond that are a dozen War Eagles with a speed of 358 km/s. Kaigun-Chusa Shaw, the commander most familiar with the suicidal charge of the Scimitar Empire, contacts Kaigun-Taisa Kozu on the carrier Ryujo in Tsushima, and points out that every subsequent wave of shipping, with the exception of the Strikehawk and the Condors, is slower than the previous wave. It is almost as if every commercial ship simultaneously decided to move to the Tsushima jump point at their best speed, regardless of whatever threat was in their way.

Ninety minutes after the detection of the War Eagles, a new formation is detected. Five Scimitar warships, including a 33,777-ton railgun-armed Raptor, a 33,768-ton Gyrfalcon with light missiles launchers, a Merlin of 32,154 tons and two Warbirds of 16,883 tons, are apparently escorting two 166,508-ton Vultures. The formation is moving at 999 km/s. This appears to be the same fleet attacked by the 2nd Hiko Sentai, so the Gyrfalcon may still have internal damage. There is no time to conduct boarding operations, so Kaigun-Taisa Kozu orders the fleet to simply destroy everything in its path.



Remarkably, despite the entire fleet opening fire on the Demonhawk, the light cruiser Kuma delivers the killing blow. Fifteen minutes later, the Kido Butai charges through the formation of twelve Thunderhawks with all and there are plenty of kills to go around. The War Eagles meet the same fate, then the Main Force of the Kido Butai closes on the group of Scimitaran warships. At just over a million kilometres, the fleet detects fifty-four inbound light missiles with a speed of 23,000 km/s. The Scimitaran missiles are less than a third of the speed of the Zuijin equivalent and are all shot down by the Japanese point defence. There are no follow-up waves, possibly because the strike from the 2nd Hiko Sentai destroyed the Gyrfalcon’s magazine, so the missiles in the launchers were the only ones remaining.

The fleet closes to 175,000 km without encountering any hostile energy weapon fire. Kaigun-Taisa Sakubara Kogo, commander of the Main Force, gives the order hold the range and open fire. The resulting ‘battle’ is a massacre, with none of the Scimitaran ships firing on their Imperial Navy counterparts. The lone survivor is a Vulture class troop transport that surrenders.

Vulture class Troop Transport      166,508 tons       892 Crew       6,512.9 BP       TCS 3,330    TH 3,328    EM 0
999 km/s      Armour 9-269       Shields 0-0       HTK 420      Sensors 6/6/0/0      DCR 1-0      PPV 0
MSP 24    Max Repair 200 MSP
Troop Capacity 70,000 tons     Drop Capable    Cargo Shuttle Multiplier 2   
Kaigun-Shōsa    Control Rating 1   BRG   
Intended Deployment Time: 3 months   

Commercial Nuclear Pulse Engine  EP128.0 (26)    Power 3328    Fuel Use 4.05%    Signature 128    Explosion 4%
Fuel Capacity 6,750,000 Litres    Range 180.2 billion km (2087 days at full power)

CIWS-120 (2x4)    Range 1000 km     TS: 12,000 km/s     ROF 5       
Thermal Sensor TH1-6 (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km
EM Sensor EM1-6 (1)     Sensitivity 6     Detect Sig Strength 1000:  19.4m km

The Main Force of the Kido Butai arrives at the Scimitar IV Lagrange point and holds position. After the extraordinary sole mission of the light cruiser Kuma and the follow-up attack of the Main Force, Kaigun-Taisa Kozu wants to organise and replenish his forces and begin recovery of the wrecks. The new battleships Ise and Hyūga transit into Scimitar and head for the Main Force, followed by a replenishment ship. Two salvage vessels follow in the wake. Against the politely-expressed objections of Kaigun-Chusa Shaw, Kuma is ordered to withdraw to Tsushima and drop off her prisoners. A light cruiser from the Tsushima – Scimitar jump point picket is ordered to transit and pick up the survivors from the more recent engagements.

Including her actions as part of the Main Force, the light cruiser Kuma has destroyed thirty-three Scimitar ships, comprising over one point one million tons of shipping. Kaigun-Chusa Shaw is awarded the Order of the Rising Sun with Silver Rays. Only the second such award in the Interstellar Era.

Eight hours after the battle, the Main Force detects sixteen Condor class ships of 989 tons, a little over a million kilometres from the Scimitar IV Lagrange point. Shortly after detection, they reverse course and head away. Kaigun-Taisa Sakubara detaches the light cruisers Agano and Kashima with orders to pursue. It seems unlikely the Condors are missile-armed, or have available missiles, or they would have fired before moving so close.

Agano and Kashima close to 100,000 km before opening fire and destroying two of the Condors. The rest each launch four size-10 missiles with a speed of 16,320 km/s. Why they did not launch while the light cruisers were approaching is a mystery, like much of the recent Scimitaran behaviour, but they have now lured Agano and Kashima into a potentially difficult situation. The two light cruisers are the older Nagara II-Ro model, with a fifteen second recharge for their 20cm lasers. The missiles arrive within ten seconds.

Despite their surprise, the Agano and Kashima score thirty-six hits with their TK-10A railguns, hitting nineteen decoys and destroying seventeen missiles. Thirteen of the remaining twenty-three missiles are on target and have strength-6 warheads. Fortunately, the FACs have split their fire, so eight missiles strike Agano and the others hit Kashima. Despite both ships suffering deep armour damage in at least one location, they are fully functional. The light cruisers run down the defenceless Condors and destroy them all. Kaigun-Taisa Sakubara orders them to return to Earth for repairs, picking up all the remaining Scimitar life pods en route.

The Empire of Japan established communication with the Scimitar Empire before hostilities broke out, which makes a robust interrogation of the Scimitaran prisoners considerably easier. Initially, the prisoners reveal a few minor items, such as technical information on improving the squadron size for jump drives and details of a particular Scimitaran active sensor, before the interrogation team strike it lucky. One of the commercial ship commanders is a disgraced former geological survey ship captain, with a low pain threshold and an encyclopaedic knowledge of the Scimitar system’s mineral deposits. Consequently, the Imperial Japanese Navy gains the equivalent of a complete geological survey of the Scimitar system. The results are fascinating.

Scimitar I is a superjovian with over sixty million tons of accessibility 1.0 Duranium. Fiji IV is suddenly less of a priority. If the Scimitar system can be secured, the Empire of Japan will have at least a century’s worth of fuel just six billion kilometres from Earth. The fourth moon of Scimitar I, which is the Scimitaran home world, has one point three million tons of accessibility 1.0 Duranium, although the other deposits are much smaller, including 156,000 tons of Gallicite. Mining it would be challenging for humans, given the two hundred degree temperature at the perihelion of the moon’s parent superjovian, but that could be solved by Scimitaran labour camps if the planet is conquered.

Scimitar I Survey Report
Sorium:   61,942,631   1.00

Scimitar I - Moon 4 Survey Report (Scimitaran home world)
Duranium:   1,338,265   1.00
Neutronium:   159,272   0.80
Corbomite:   374,526   0.70
Tritanium:   345,879   0.60
Boronide:   220,186   0.40
Mercassium:   106,779   0.60
Vendarite:   622,179   0.60
Sorium:   326,222   0.80
Uridium:   154,486   0.40
Corundium:   117,433   0.50
Gallicite:   156,719   0.90

The first moon of the second planet, also a superjovian, has two million tons of accessibility 0.8 Duranium, which explains the Scimitar colony on that world. Scimitar III is a gas giant, with almost half a billion tons of accessibility 0.9 Sorium. It is hard to visualize a situation in which the Empire of Japan would ever need a source of fuel outside the Scimitar system.  There are other bodies with minerals in the system, but none that would be mined in preference to those already listed.

Scimitar II - Moon 1 Survey Report
Duranium:   2,225,405   0.80
Tritanium:   3,496,292   0.10
Boronide:   1,917,954   0.50
Mercassium:   3,577,839   0.30
Corundium:   45,358   0.50

Scimitar III Survey Report
Sorium:   472,836,000   0.90

Offline Steve Walmsley (OP)

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Re: Empire of the Stars - Updates Thread
« Reply #12 on: July 03, 2024, 02:41:16 PM »
(this is the second of two posts today)

22nd August 1973
Daigensui-Kaigun-Taisho Takagi, commander-in-chief of the Imperial Navy, issues new instructions for Kaigun-Taisho Nagata, commander of the combat forces of the Imperial Navy. The Scimitaran colony on the first moon of Scimitar II should be secured and used as a base for operations against the Scimitaran home world. Scimitar II has an eccentric orbit of 0.18, but that is far less than the 0.42 of Scimitar I and the temperature variance on the moon is only about forty degrees, which can be handled by humans with either infrastructure of terraforming. Establishing a base within the inner system will greatly improve the logistics for the overall campaign. Kaigun-Taisho Nagata delegates operational control to Kaigun-Taisa Kozu, commander of the Kido Butai.

The Main Force of the Kido Butai, stationed on the Scimitar IV Lagrange point, has been reinforced by Ise and Hyūga, although the light cruiser element has been reduced to three ships by the detachment of Agano, Kashima and Kuma. The Carrier Striking Force is still four days from the Tsushima – Scimitar jump point. Also on station with the Main Force is the 1st Hiko Sentai, ready for a strike mission into the inner system, and a Kawanishi H1K 'Saiun'. The latter is ordered to jump to the Lagrange point of Scimitar I to check it is clear.

Kido Butai – Main Force
Nagato class Battleship: Hyūga, Ise, Mutsu, Nagato
Takao class Heavy Cruiser: Atago, Chōkai, Maya, Takao
Nagara II-Ro class Light Cruiser: Kashii, Niitaka
Nagara II-Ha class Light Cruiser: Yūbari

The Lagrange point is clear, so the 1st Hiko Sentai also jumps and then sets course for the second planet to determine the opposing force and attack any target of opportunity, while the H1K remains on the Lagrange point as a sensor picket. The 1st Hiko Sentai moves within a million kilometres of the gas giant and its six moons, with no sign of any Scimitaran ships. Without passive sensors, there is no way to detect the colonies themselves. Kaigun-Taisa Kozu requests a landing force, which is passed up the chain of command. Three Sagami Maru class transports begin the process of loading three divisions and transporting them to the Scimitar system.

The 1st Hiko Sentai returns to the Scimitar I Lagrange point, while the Kawanishi H1K moves on a reciprocal course and takes up station in orbit of Scimitar II, so it can monitor the two Scimitaran colonies on the first and fourth moons, which have EM signatures of 365 and 1355 respectively. There are active emissions from the surface of the first moon, orbiting at 186,000 km, which indicates STO batteries, but there is no attack on the patrol craft.



26th August 1973
The survey cruisers Sagiri and Minekaze enter the Scimitar system and begin a gravitational survey. The 1st Hiko Sentai departs for Sol, as there are no targets available and Kaigun-Taisa Kozu does not wish to waste missiles against the defences of the Scimitar home world.

29th August 1973
The Kawanishi H1K in orbit of Scimitar II detects sensor emissions from two Solarhawks at a distance of thirty-two million kilometres. The Solarhawk is a 50,000 military-engined vessel, that is likely to be a Scimitaran battleship. In the outer system, the Carrier Striking Force has arrived at the Scimitar IV Lagrange point to rendezvous with the Main Force and is currently refuelling from the replenishment ship Kenyo Maru. Kaigun-Taisa Kozu does not want to miss a chance to engage the Scimitaran fleet in deep space, so he cancels the refuelling and orders the entire Kido Butai to jump to the Scimitar I Lagrange point.

Kido Butai – Kaigun-Taisa Kozu Kintaro

Carrier Striking Force - Kaigun-Taisa Mazaki Yukimori
Taihō class Carrier: Junyō, Taihō
Akagi II class Carrier: Akagi, Ryujo**, Soryu*, Zuiho
Kongo II class Battlecruiser: Hiei, Kirishima

Main Force - Kaigun-Taisa Sakubara Kogo
Nagato class Battleship: Hyūga, Ise, Mutsu, Nagato
Takao class Heavy Cruiser: Atago, Chōkai, Maya, Takao*
Nagara II-Ro class Light Cruiser: Kashii, Niitaka
Nagara II-Ha class Light Cruiser: Yūbari



With four battleships and six carriers, the Kido Butai has never been stronger. Immediately after transit, the fleet detects thirteen ships in orbit of the Scimitaran home world, including two 33,768-ton Gyrfalcon class escort cruisers, nine other ships of similar size and two Warbirds of 16,883 tons. The surface-based defences are unknown. Shortly thereafter, the Kawanishi H1K, having left orbit of Scimitar II, moves within its twenty million kilometres active sensor range of the Solarhawks and detects a huge Scimitaran fleet, comprising eight Solarhawk class battleships, seven Gyrfalcon class escort cruisers, four 33.755-ton Nightfalcons and thirteen ships of light cruiser size, totalling one million tons of warships.

Scimitar Home World
2x CLE Gyrfalcon: 33,768 tons
3x Sparrowhawk: 33,697 tons
3x Falconet: 33,642 tons
3x King Eagle: 33,449 tons
2x Warbird: 16,883 tons

Scimitaran Battle Fleet
8x BB Solarhawk: 50,654-tons
7x CLE Gyrfalcon: 33,768 tons
4x Nightfalcon: 33,755 tons
8x Warbird: 16,883 tons
1x Sunhawk: 16,855 tons
1x Harrier: 16,855 tons
3x Peregrine: 16,855 tons



The Kido Butai sets a course for Scimitar II, intending to interpose itself between the Scimitaran battle fleet and the home world defences. This will be the decisive battle of the campaign and probably the most important engagement in the history of the Imperial Navy. The battle starts with a loss, as a salvo of missiles from the Scimitaran fleet destroys the H1K. All contact with the Scimitaran fleet is lost. In response, the Kido Butai sends out three Aichi E1A3 scouts in an attempt to reacquire the contacts. Five hours later, the enemy fleet is detected on a heading for its home world. The Kido Butai splits, with the Carrier Striking Force maintaining range and the Main Force adopting an intercept course, despite being out-massed by almost three-to-one. All the fighters are launched and maintain close formation with the Main Force. For the moment, the Nakajima B1N 'Ryūsei' carrier strike craft remain on Junyō and Taihō.



The Main Force of the Kido Butai is within twenty million kilometres of the Scimitaran Battle Fleet when it detects a wave of three hundred and ninety size-10 missiles on a reciprocal course. While the missiles are only travelling at 15,000 km/s, it is still almost four hundred missiles, probably equipped with decoys and the same strength-6 warheads used against the H1K. Every ship in the Main Force and every escorting fighter readies its weapons for point defence.

The 1st Fleet, with over three hundred fighters, destroys one hundred and nineteen missiles and over two hundred decoys. The Main Force itself accounts for a further seventy-three inbounds. Sixty percent of the surviving missiles miss their targets, which leaves seventy-seven. Fortunately, they are spread across multiple targets. Nagato and Mutsu are struck by thirty-three and thirty-two Scimitaran missiles respectively, dropping their shields to around forty-five percent. The light cruisers Yubari and Kashii suffer nine and three hits respectively. Despite the plainly low tech missiles, if the Scimitarans had focused their fire on a single target, or the Imperial Navy had attacked before the second pair of Nagatos was available, the situation would have been far more serious.

The Main Force continues to close, with Kaigun-Taisa Sakubara’s thoughts focused on the potential reload time of the Scimitaran missile launchers. After launching, the Scimitaran fleet reverses course, trying to hold the range open for as long as possible while the Main Force gains on them at 2000 km/s.

Twelve and a half minutes after the first missile, a second equally large wave arrives, which is fortunate as the battleships have a nine minute shield recharge time. The point defences are equally effective and only seventy-nine Scimitaran missiles detonate. They are mostly spread among the four Takao class cruisers, with Takao struck by twenty-two, reducing her shields to just seven percent, and the others by eighteen, sixteen and fifteen. Eight missiles hit the light cruiser Niitaka, damaging her armour. The range is fourteen million kilometres.

Wave three arrives while the fleets are still twelve million kilometres apart. Japanese point defence is less effective than the first two waves and more of the surviving missiles reach their targets. Nagato and Mutsu are hit by forty-five and forty missiles respectively, reducing Nagato’s shield strength to less than a quarter. All three light cruisers are also targeted. Kashii and Niitaka take eleven and four hits respectively, leaving each of them with a hole  in their armour. Yubari suffers twenty-two hits, two of which penetrate and disable an engine. Her speed drops to 2500 km/s. Kaigun-Taisa Sakubara orders the three light cruisers to leave the Main Force and head for the Scimitar I jump point. The four battleships and four heavy cruisers will continue with the 1st Air Fleet.

The fourth Scimitaran missile wave is split into two parts, with one hundred and forty missiles moving past the Kido Butai and pursuing the three light cruisers. Only thirty-eight missiles from the larger part of the wave impact on the shields of Nagato and Mutsu. To their credit, the light cruisers destroy twenty inbound missiles from the smaller half of the wave. Niitaka takes only four armour hits, while Kashii suffers minor internal damage after fourteen hits. Yubari is not so lucky and is destroyed by eighteen strength-6 detonations. She is the first light cruiser to be lost in action. Niitaka and Kashii pick up her life pods, then continue onward to the Lagrange point, assuming they are out of range of the Scimitaran missiles.

That assumption proves dangerous, as the fifth wave is also divided into two parts, with one hundred and twenty-five missiles on an intercept course for Niitaka and Kashii. Kaigun-Taisa Sakubara briefly considers detaching the A2M ‘Shinden’ fighters from the 1st Air Fleet to attack the missiles targeted on the light cruisers as they pass, but ultimately the successful defeat of the Scimitaran Battle Fleet will depend on his battleships and heavy cruisers, so he leaves that thought unvoiced. The Main Force rides out the larger half of the missile wave with only shield damage. While the light cruisers prepare to defend themselves, the sixth wave arrives and is entirely targeted on the Main Force. Over a hundred Scimitaran missiles detonate their warheads. Even with the damage spread between two battleships and two heavy cruisers, Takao is still reduced to fifteen percent shield strength.

Eleven minutes later, the second half of the fifth wave catches up with Niitaka and Kashii. Somehow the two light cruisers destroy seventeen missiles, but that still leaves more than a hundred. Niitaka is hit eighteen times, suffering only a single internal hit, which is remarkable considering that over half her armour belt has been destroyed. Kashii suffers nineteen strength-6 hits and twelve penetrate the tattered remnants of her armour, inflicting massive damage. Her remaining engine is destroyed, along with four lasers, three railguns, half her troop transport bay and numerous electronic systems. One hundred and twenty-two crew and twenty marines are killed. Kaigun-Taisa Sakubara immediately requests a tug to rescue to stricken ship.

Unexpectedly, the Scimitaran Battle fleet reverses course and begins heading toward the Main Force, or perhaps they are trying to get within missile range of the crippled Kashii. The Main Force closes to within three million kilometres of the Scimitaran Fleet and detects a seventh wave of missiles. One hundred and three detonate against the shields of Nagato, Mutsu, Takao and Atago.

Wary of the seven Gyrfalcon escort cruisers in the Scimitaran battle fleet, capable of launching four hundred and sixty-two light missiles in a single salvo, Kaigun-Taisa Kozu has already ordered a strike from the seventy-one Nakajima B1N 'Ryūsei' of the Carrier Strike Force, on the basis that the Main Force can hold outside light missile range once the current missile waves end. That strike has been en route for forty-five minutes, but is still an hour and forty minutes away. If the Scimitarans do still have anti-ship missiles remaining, that is too long for Kashii.

Kaigun-Taisa Sakubara requests permission to test the Main Force’s ability to withstand the firepower of the Scimitaran escort cruisers. Kaigun-Taisa Kozu gives his assent. After briefly holding the range open to recharge shields, the Main Force allows the range to drop to one point eight million kilometres before a wall of missiles of light missiles is detected. This attack is at a greater range than expected and not all the ships of the Main Force have full shields. Sakubara orders the Main Force to reverse course and move away at maximum speed, with the light missiles in pursuit. A second wave is detected ten seconds behind the first and third ten seconds after that. Unlike the anti-ship missiles, there will be no time for shield recharge between attacks, so Sakubara wants to know his fleet’s ability to withstand the assault before moving deep into hostile light missile range.

By the time the first salvo reaches the Main Force, there are over two thousand three hundred inbound light missiles in five waves. The 1st Air fleet shoots down two hundred and thirty-three missiles from the first wave, with a further seventy-four destroyed by the battleships and heavy cruisers. While the light missiles are faster, they lack decoys, making them easier to hit than the larger anti-ship missiles. The battleship Mutsu is struck by sixty-one Scimitaran missiles, dropping her shields by seventeen percent.

Nagato is hit by a similar number of missiles from the second wave, while Takao is hit fifty-one from the third. Her shields had not fully recovered from the recent anti-ship missile attack and are down to fifty percent. Each ship in the Main Force is targeted by a different wave of light missiles, with Maya the only ship to fall below fifty percent shields. After a gap of thirty seconds, a ninth and tenth wave strike Mutsu and Nagato respectively, then Japanese sensors are clear of missile contacts. The Main Force continues to increase the range while its shields recharge, heading toward the Scimitar home world. The Scimitaran Battle Fleet ignores the Main Force and sets a direct course for the crippled Kashii, less than forty million kilometres away.



At two point three million kilometres, the Main Force changes to an intercept course. The B1N strike is still ninety minutes away, so Kaigun-Taisa Sakubara plans to move within Scimitaran light missile range in an attempt to drain the magazines of the Gyrfalcons, without committing to a close approach. At one point eight million kilometres, the fleet detects multiple waves of light missiles ten seconds apart, with four hundred and sixty-two missiles in each wave. The Main Force changes course to head for Kashii, moving to interpose itself between the light cruiser and the Scimitaran Battle Fleet.



The first two waves target Mutsu and Nagato, dropping their shields by seventeen percent each. While defending against the missiles, an A2M3 ‘Shinden’ from the 1st Air Fleet suffers a failure of its cannon and has no maintenance supplies remaining, so it breaks away and heads back to its carrier. Given the level of defensive fire required, the lone fighter is likely to be joined by others in the near future. The ships of the Main Force are also consuming supplies rapidly, with the battleship Mutsu already below sixty percent.

Once again, every ship is targeted by a different wave, with the shields of the four heavy cruisers reduced to between fifty-five and sixty-five percent. After a thirty second break, a further seven waves arrive, hitting every ship except the battleship Ise. The Main Force is apparently out of range, which is just as well. Atago is down to thirty percent shields and Chōkai is not much better. Four more fighters have departed and Nagato has only thirty-eight percent of her maintenance supplies remaining. Kaigun-Taisa Sakubara orders all ships to cease using their 25cm lasers for point defence.

The Main Force can dance in and out of light missile range to absorb Scimitaran attacks, but is damaging its long-term combat ability to do so and reducing the effectiveness of its fighter screen. Given the rate of shield depletion, it cannot close to energy range unless the Gyrfalcons run out of missiles and their magazine capacity is unknown. Kaigun-Taisa Sakubara decides to remain outside light missile range until after the strike from the Nakajima B1N 'Ryūsei', then try again. Time is running out for Kashii.

Three minutes after the last attack, the Main Force detects an inbound wave of two hundred size-10 anti-ship missiles. This is a smaller attack than the previous wave of anti-ship missiles, so it may be the last Scimitaran attack of this type. It is fortunate that the Main Force was the target and not the virtually defenceless Kashii. Only twenty-six missiles reach their targets and are all expended against shields. For the moment, neither fleet can seriously threaten the other. That will change dramatically if the Scimitarans run out of missiles.

An hour after the missile attack, the seventy-one Nakajima B1Ns pass the Main Force and launch their Rakurai missiles, targeted on three Gyrfalcons. The first defensive missile detonations are 900,000 km. Given the range at which the Scimitaran fleet attacked the main force was in excess of two million kilometres, their defensive fire must be limited by the range of their anti-missile sensors or fire controls. A hundred and eleven light missile detonations are recorded, along with forty-one energy impacts at point-blank. One hundred and twenty Rakurai survive to detonate, although half of those strike decoys. The rest are distributed between the three targeted Gyrfalcons, with a total of nine causing internal damage. Two damaged Gyrfalcons drop to a speed of 2570 km/s and fall behind the Scimitaran Battle Fleet.

The Scimitaran fleet is still twenty-six million kilometres from Kashii, so Kaigun-Taisa Sakubara decides to wait for a few minutes to allow the damaged ships to fall further behind, before once again taking the Main Force into range of the Scimitaran light missiles. At one point eight million kilometres, an inbound wave of three hundred and thirty light missiles is detected. By this point, the two damaged Gyrfalcons are 800,000 km astern of the main Scimitaran fleet so they can no longer contribute to the attacks. As before, additional waves follow the first, separated by ten second intervals.

Due to the reduced wave size, the numbers of missiles breaching the Japanese defences is reduced. The shields of Mutsu and Nagato fall by only ten percent, although another three fighters have to head back to the carriers, while Takao, Atago and Chōkai maintain their shields at eighty percent or higher. The sixth and final wave, directed against the heavy cruiser Maya, is only thirty-two missiles. Kaigun-Taisa Sakubara believes the Scimitaran Battle Fleet may finally be out of missiles and requests permission to close to energy range. Kaigun-Taisa Kozu gives his assent.

As the range falls, the two trailing Gyrfalcons start launching light missiles, but there is nothing from the main body. The battleships and heavy cruisers of the Main Force leave the point defence to the fighters, several of which suffer cannon failures, to preserve their own maintenance supplies. There is no significant damage to shields. After the light missile waves cease, the Main Force closes to within 260,000 km of the Scimitaran Battle Fleet. There is no energy fire, which means the Main Force is faster and has longer-ranged weapons.

Kaigun-Taisa Sakubara orders a volley of 25cm laser fire from all eight ships. Mutsu and Hyūga fire first and one of the 50,000-ton Solarhawks suffers nine strength-3 hits. Unfortunately, it will take a long time to inflict serious damage and after the long point defence engagement, the Main Force may run out of maintenance supplies before it can achieve a victory. Therefore, he orders the fleet to close to 165,000 km to test the Scimitaran weapons capability. All eight Japanese ships fire on the approach, but there is still no return fire. At that range, the 25cm lasers are inflicting strength-4 hits. When Mutsu and Hyūga fire for the second time, they penetrate the armour of the Solarhawk, albeit without slowing it down.

The known range of the railguns on the single Raptor class battlecruiser in the Scimitaran fleet is 160,000 km, so Sakubara orders the Main Force to close to 155,000 km to test the weapons of the other Scimitaran ships. Once again, there is no incoming fire, possibly due to superior Japanese electronic warfare. The Solarhawk takes fifteen strength-5 hits from Takao and Chōkai and slows by a third, dropping out of the formation. Sakubara slows the Main Force, so the Scimitaran fleet gradually closes the range, then orders the fleet to concentrate fire on the Raptor, which is soon disabled and left behind by the Scimitarans.

With the range at just 128,000 km, the Scimitarans suffers their first loss, when a 33,755-ton Nightfalcon suffers a large secondary explosion and disintegrates. The Gyrfalcons are almost certainly out of light missiles and the 50,000-ton Solarhawks are assumed to be the source of the size-10 anti-ship missiles, so the Main Force is focused on the other ships in the fleet on the assumption that at least some of them must be energy-armed. At this point though, the main concern for Kaigun-Taisa Sakubara is dwindling maintenance supplies, rather than any serious threat from the Scimitaran Battle Fleet. Now their missiles have been expended, the Scimitaran ships are simply targets. The Main Force lacks Nagara class light cruisers, which means no boarding capability, which in turn means that destroying every enemy vessel is the only realistic option.

The range continues to fall, as the battle becomes a massacre. The three remaining Nightfalcons are destroyed, followed by the Sunhawk and Harrier, both of which are 16,855 tons. Even at 80,000 km, there is still no resistance from the Scimitarans. The Main Force of the Kido Butai closes to 45,000 km, allowing the 25cm lasers of the four battleships and four heavy cruisers to achieve their maximum strength-16 damage. Within ten minutes of the first shot being fired, nothing remains of the Scimitaran fleet except a long trail of wreckage and life pods. When the end finally came, it happened very quickly. Another glorious victory for the Imperial Japanese Navy.

Niitaka, one of the light cruisers that accompanied the Main Force into the inner system, survived with only engine damage, so she is recalled from her flight toward the Lagrange point and ordered to pick up the Scimitaran life pods. It will be a severe strain on her life support systems, but she can drop them off at the Tsushima colony within a couple of weeks. The Main Force moves to cover the light cruiser Kashii until she can repair an engine, while the 1st Air Fleet heads for the Carrier Striking Force, also en route towards Kashii, to replenish maintenance supplies.

Within the next hour, all the fighters land and the Kido Butai reforms into a single fleet. Kashii repairs one of her engines and moves to assist Niitaka in recovering life pods. The replenishment ship Kenyo Maru jumps to the Scimitar I Lagrange point, so Kaigun-Taisa Kozu sets a rendezvous point en route to the Scimitaran home world, where Kenyo Maru can replenish the Kido Butai’s diminished maintenance supplies. Two hours later, sensor emissions are detected from a pair of Scimitaran King Eagles, 33,449 tons ships with unknown armament, midway between the Scimitaran home world and the Scimitar I jump point, moving toward the latter at 2937 km/s.



The Kido Butai is seven hours from the Lagrange point, but the King Eagles will be there in less than five. If the King Eagles jump to the outer system, they will be able to attack and destroy a pair of salvage ships working on the wrecks from the earlier battles. Kaigun-Taisa Kozu orders every available fighter to be launched with orders to prevent the Scimitaran fleet reaching the Lagrange point. The Kido Butai follows in their wake.

As the Kido Butai moves within the one hundred and ten million kilometre sensor range of the King Eagles, it detects several additional ships. The Scimitaran fleet comprises three King Eagles, two Gyrfalcon class escort cruisers and two 16,883-ton Warbirds. This is a difficult target for the 1st Air Fleet, especially as the Nakajima B1N strike craft have not yet reloaded, but if they do not attack, it is likely the salvage ships and their accompanying freighters will be destroyed. Without those salvage ships, the Empire of Japan cannot take advantage of the minerals contained within the many Scimitaran wrecks, which have the potential to ease the current resource crisis.

Meanwhile, Niitaka and Kashii are recovering Scimitaran survivors and conducting interrogations. Technical information is gained on improved fuel efficiency and thermal sensors, both of which were projects already underway. More importantly, the prisoners reveal that the Scimitar system only has a single jump point, leading to Tsushima. Apparently, the strains of being restricted to a single system, with what the Scimitarans viewed as a hostile alien race on the far side of the only jump point, caused severe tensions among the military forces and the civilian population. This tension was exacerbated by the regular cataclysmic climate changes on their home world, due to the extreme orbit of the parent superjovian. The suicidal ‘rush to the jump point’ after the initial Japanese attacks, was due to a total breakdown in the chain of command. The hardcode military elements, including the battle fleet, were loyal to the regime and prepared to stay and fight.

The Scimitaran fleet and the 1st Air Fleet race toward the Lagrange point. The Japanese fighters are moving at 8000 km/s, the speed of the slower A1M ‘Raiden’. While the A2M ‘Shinden’ fighters, with a speed of 12,000 km/s, could arrive much sooner, the strength of the enemy fleet is too much of a deterrent to consider splitting the force. By now, the Kenyo Maru is out of danger, having been passed by the fighters, and is moving to meet the approaching Kido Butai.



The 1st Air Fleet arrives at the Lagrange point with the Scimitaran fleet less than four million kilometres away and due to arrive in twenty-two minutes. The Kido Butai is fifty million kilometres astern. Unwilling to let any hostile ship make the jump, Kaigun-Taisa Kozu orders the 1st Air Fleet to close, regardless of losses, and eliminate the enemy force. Three hundred and eleven Japanese fighters streak toward the Scimitaran fleet.

The first wave of one hundred and thirty-two light missiles, travelling at 23,000 km/s, attacks the fighters over a million kilometres from the enemy fleet. One hundred and seventeen are shot down by the fighters’ cannon. Seven fighters are targeted by the rest, with one destroyed, one disabled and three taking armour damage. New waves arrive every ten seconds, but the fighters prove adept at intercepting the Scimitaran missiles and the few that avoid the cannon fire find the fighters to be difficult targets. After facing eight waves, with over a thousand light missiles in total, only two fighters have been destroyed, with three more crippled and dead in space. Twenty-two fighters have varying degrees of armour damage. The range has fallen to 530,000 km.

By the time the range falls below 200,000 km, the total of destroyed and disabled fighters has risen to ten, with more than thirty damaged. A few missiles from each wave are bypassing the main body of the 1st Air Fleet and picking off the cripples in its wake. The distance to the Scimitaran fleet is dropping fast, with a closing speed close to 11,000 km/s. At 41,000 km, the fighters run into a wall of railgun fire from the King Eagles, with six exploding under heavy railgun fire. Moments later, as the two forces pass through each other, another four are destroyed by the Warbirds. Fortunately, the alien ships seem to be restricted by their number of fire controls, or the carnage would be far worse.

The Japanese fighters focus their attack on one of the Gyrfalcons, inflicting seventy-four internal hits, then the A2M ‘Shinden’ engage one of the Warbirds while the A1M ‘Raiden’ complete the destruction of the escort cruiser. Another four fighters blow up under fire from the Warbirds, which have a weapon recycle time of just five seconds, then ten more as the King Eagles, with a fifteen second recycle time for their larger railguns, fire again. One Warbird explodes, then the other. The surviving Gyrfalcon launches more light missiles into the fray. Fighter losses continue to mount. Simultaneously, the last Gyrfalcon, one of the King Eagles and six fighters are blown to pieces by intense fire, leaving just a pair of King Eagles in the Scimitaran force. There are still over two hundred and fifty fighters in the 1st Air Fleet, attacking the two remaining targets at point blank range. The King Eagles kill four more fighters before they are obliterated.

Over fifty fighters have been lost, but the Scimitaran fleet has been completely destroyed and will no longer threaten the salvage operations. Once again, the 1st Air Fleet has performed superbly. The surviving fighters head back to the Kido Butai, which is moving to resupply from the Kenyo Maru. Niikata has not yet jumped, so she moves to pick up the Scimitaran survivors. There are still six ships of approximately 33,700 tons in orbit of the Scimitaran home world, along with a large shipyard complex and presumably a substantial number of surface-based weapons. They will be the next major challenge for the Kido Butai.

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Re: Empire of the Stars - Updates Thread
« Reply #13 on: July 14, 2024, 05:06:33 AM »
30th October 1973
It takes over two months to refuel and resupply the Kido Butai, as a second replenishment ship has to be sent from Earth. That time has not been wasted, as three Sagami Mary and three Shinshu Maru troop transports are now assembled in orbit of the sixth moon of Scimitar II, protected by the battlecruiser Kirishima. Salvage operations are also well underway in the outer system, now protected by the light cruiser Kuma, which has returned to action after dropping off its prisoners. Once at full fuel and maintenance supplies, the Kido Butai moves to Scimitar II to test the surface defences of the Scimitaran colonies on the first and third moons.



The third moon has a ground forces signature of 73,900 tons, but it is likely to be fortified, which means it could be anything from 200,000 to 400,000 tons in reality. The troop transports carry the 4th, 6th and 8th divisions, plus the first two tank regiments of the Imperial Army, each comprising one hundred and twenty Ju-I heavy tanks. A total ground force of over three hundred thousand tons. Before any landings can begin, the Main Force of the Kido Butai will have to clear any surface-based defences.

Kido Butai – Kaigun-Taisa Kozu Kintaro

Carrier Striking Force - Kaigun-Taisa Mazaki Yukimori¬¬
Taihō class Carrier: Junyō, Taihō
Akagi II class Carrier: Akagi, Ryujo**, Soryu*, Zuiho
Kongo II class Battlecruiser: Hiei

Main Force - Kaigun-Taisa Sakubara Kogo
Nagato class Battleship: Hyūga, Ise, Mutsu, Nagato
Takao class Heavy Cruiser: Atago, Chōkai, Maya, Takao*

Transport Force – Kaigun-Taisa Natsume Ken
Kongo II class Battlecruiser: Kirishima
Sagami Maru class Troop Transport: Keizan Maru, Sagami Maru, Tatukami Maru
Shinshu Maru class Troop Transport: Sakito Maru, Sanka Maru, Shinshu Maru

The Main Force closes to within 85,000 km before coming under fire. Three different battleships are struck by a total of fifty-nine strength-1 energy impacts. All eight ships return fire and within a couple of minutes, all the surface-based railguns are eliminated, although the EM Strength of the colony drops by about forty percent during the bombardment, indicating the destruction of numerous installations. The troop transports move in and unload the three divisions and two independent tank regiments, totalling over thirty thousand infantry and almost a thousand armoured vehicles.

The defenders number approximately fifteen to twenty thousand infantry, supported by hundreds of tanks and other weapons. Generally, the Scimitaran weapons and armour are inferior to the those of the Imperial Army, although there are a small number of more advanced units, suggesting the Scimitar Empire has recently upgraded its military technology. The moon has a gravity of 0.06G and a surface temperature of -57C, which will make combat conditions difficult for both the Imperial Army and the Scimitaran defenders. Initially, casualties are heavy on both sides, with over fifteen hundred Japanese infantry killed on the first day. Over time, a combination of Japanese elan and determination, supported by two hundred and forty heavy tanks that prove very resistant to hostile fire, gradually force an advantage.

Scimitaran casualties on the second day are close to double that of the Imperial Army and by the third day, they are triple. The battle is hard fought by the defenders, but a series of breakthroughs, especially on the fourth and fifth days, inflict significant losses on the Scimitaran. By day six the battle has become a rout. On day eight, the Jyūrokujō-Kyokujitsu-ki (Sixteen-Ray Rising Sun Flag) is flying over the ex-Scimitaran colony. There are no alien settlers on the moon, most likely due to the low gravity. One hundred and eighty automated mines are secured by the Imperial Army. Japanese casualties were approximately sixteen percent of the engaged force, including the loss of five Ju-I heavy tanks.

The mineral deposits on the moon are disappointing, with only seventy thousand tons of Uridium and almost sixty thousand tons of Gallicite, both of which are at high accessibility. For now, the mines will remain on the surface as Gallicite is the most in-demand mineral for the Empire of Japan. A shore battery with eight 25cm lasers and ten railguns is unloaded on to the newly captured moon to provide protection. The assault troops begin the process of re-embarking on to their transports, ready for the attack on the third moon

Scimitar II - Moon 3 Survey Report
Uridium:   70,391   1.00
Gallicite:   58,150   0.90

10th November 1973
The Main Force of the Kido Butai approaches the first moon of Scimitar II and comes under railgun fire from the surface, albeit of limited effectiveness. Without even bothering to move back out of range, the battleships and heavy cruisers obliterate the railguns with a barrage of fire from their secondary armament.

16th November 1973
The survey cruiser Asakaze transits into the Inazawa system, which lies beyond the only outward jump point in Sigma Draconis, scene of the great battles against the Mizuchi. She detects a single Mizuchi ship, a new type designated as Gourami class, on the Inazawa side of the jump point. Asakaze engages her active sensors and launches her two A2M ‘Shinden’ fighters and her single B1N ‘Ryusei’ strike craft.

Initially the 4039-ton Gourami moves away, so Kaigun-Chusa Arakawa Nobuo, captain of the 18,000 ton Asakaze, orders the fighters and the B1N to attack and orders the launch of a Rakurai from Asakaze’s single launcher, while the survey cruiser opens the range. The Gourami reverses course and transits the jump point, so Asakaze returns to the jump point, allowing one of her fighters and the B1N to follow with orders to engage. Asakaze and other fighter remain in Inazawa in case the Gourami transits once again.

In Sigma Draconis, the Gourami runs sunward with the Mitsubishi A2Ms and the Nakajima B1N in pursuit. After two minutes the B1N recovers from jump shock and launches her two Rakurai anti-ship missiles. Both strike the Gourami, detonating their strength-12 warheads, and the Mizuchi ship vanishes, indicating it was destroyed.

The brief engagement confirms that assumption that one or more surviving Mizuchi ships left Sigma Draconis after the victory of the Imperial Japanese Navy. The Nagara II-Ha light cruisers Sendai and Tama and the jump-capable Kasagi class light cruiser Itsukushima are dispatched from Sol to Sigma Draconis, initially to guard the small colony on the first moon of Sigma Draconis II, but also to probe into Inazawa once they have support from a replenishment ship. Asakaze recovers her fighters and leaves her Aichi E1A3 scout to picket the Inazawa – Sigma Draconis jump point, then begins a survey of Inazawa.

17th November 1973
The invasion of the first moon of Scimitar II is launched. The moon is similar in size to Mercury, with gravity of 0.31G, so the Imperial Army troops do not have to fight in a low gravity environment, although they have to endure the surface temperature of -74C. The Scimitaran force is approximately ten thousand infantry and a couple of hundred tanks and proves no match for the battle-hardened Japanese troops. The battle is over within three days, with a little more than two thousand Imperial Army casualties. Once again, there are no Scimitaran civilians on the moon. Thirty automated mines are captured.

This moon will serve as a forward base for the eventual ground assault on the Scimitaran home world. Far more than the three battered divisions will be required, so they will be left in place to recuperate, while the troop transports bring in two more divisions from Earth and one currently based at the colony in Kapteyn’s Star to combat a potential alien race that did not materialise as yet. Even that force is unlikely to suffice, so new divisions will be trained.

As that will take some time, Daigensui-Kaigun-Taisho Takagi issues an order for the Kido Butai to eliminate the Scimitaran shipyard complex in orbit of their home world, the fourth moon of Scimitar I, to prevent the Scimitar Empire from constructing additional ships. This will likely require eliminating the home world defences first. The Kido Butai moves within ten million kilometres of the Scimitaran home world without incident, then the Carrier Striking Force holds position, while the Main Force advances under cover of the 1st Air Fleet. In orbit of the moon are three 33,697-ton Sparrowhawks and three 33,642-ton Falconets, with unknown armament, possibly all that remains of the once mighty Scimitar Empire Navy.



As the Main Force reaches the orbit of the outermost moon of Scimitar I, it detects a ground forces signature of 33,600 on the fifteenth moon. The equivalent signature on the fourth moon is 210,300 tons. One point eight million kilometres from the target, three light missiles appear, moving toward the fleet at 48,200 km/s. The tiny salvo is easily shot down. The tactical officers of the Kido Butai puzzle over the significance of the attack, while the fleet continues closing. At just under one point seven million kilometres, they detect thermal signatures from a wave of two hundred and ninety-six light missiles, with a speed of 23,000 km/s, almost 900,000 km ahead.

The tactical officer on the Nagato, Kaigun-Shōsa Goto Yoshiko, informs her captain that based on the relative distances and travel times, the earlier three missile salvo travelling at 48,200 km/s was probably part of the same launch as the slower wave at 23,000 km/s, which means the Scimitar Empire has developed a much faster light missile but not yet deployed it in significant numbers. If the Empire of Japan had waited before attacking the Scimitar system, the result may have been quite different.

Five seconds behind the large wave is a smaller wave of one hundred and forty-five missiles, followed by several more waves alternating between two hundred and ninety nine and one hundred and forty-five. The slightly larger subsequent waves validate Kaigun-Shōsa Goto’s theory. Kaigun-Taisa Sakubara Kogo orders the Main Force to reverse course, while he determines its ability to withstand the attack.



In total, twenty-fives waves of light missiles crash against Japanese defences before the Main Force retreats out of range. They follow the same pattern, except for the last wave, which is four hundred and forty-one missiles. The Scimitarans make a noticeable change to their tactics with multiple waves targeting the same ship in an attempt to batter down its shields. This would have been more effective if the two mini-waves pattern had been combined into a single wave, but it was still enough to drop one of the heavy cruisers below 50% shields. As in the engagement with the Scimitaran Battle Fleet, maintenance supplies are soon a concern, so the warships do not use their main armament for point defence, relying on the fighter cover and their twin 12cm laser turrets. Half a dozen fighters are at the point where they cannot repair another cannon failure, but only two warships are below eighty percent supplies.

After recharging shields, the Main Force approaches the Scimitaran home world once again. This time they are greeted with twenty-one of the faster Scimitaran light missile, followed by four hundred and twenty-one slower missiles. This pattern continues, with a total of sixteen large waves, interspersed with smaller twenty-one missile waves, also of the slower missile type, before the Main Force moves back out of range. The more concentrated Scimitaran attacks are more effective, with the heavy cruiser Atago reduced to ten percent shields. Six of the covering fighters have withdrawn due to cannon failures. While the Main Force is unable to penetrate deep into the Scimitaran missile defences, their attempts to do so are draining the ordnance of the Scimitaran bases, without any permanent damage to the Imperial Navy.

Once the shields of all the battleships and heavy cruisers are at 100%, the eight warships of the Main Force begin their third attempt to approach the Scimitaran home world. During the two previous ventures into the defensive envelope of the bases, the first light missiles were detected around one point eight million kilometres from the moon. This time, the fleet passes that point without detecting anything and Kaigun-Taisa Sakubara begins to consider the possibility they have exhausted their missiles . At one point six million kilometres, a wave of twenty-four faster missiles is detected and at one point five million, a wave of four hundred and twenty slower missiles, followed by a further twenty-four slow missiles, then another wave of four hundred and twenty.

Although the first twenty-four light missiles are easily dispatched, Kaigun-Taisa Sakubara is concerned by the change in Scimitaran tactics and decides to avoid any unnecessary risk by ordering a course reversal. However, the Main Force is closer to the Scimitaran home world than during the two previous incursions and therefore will take longer to move outside hostile missile range.



Several missile waves crash against the shields of the battleships Mutsu and Nagato, dropping them below fifty percent, but the attack is short-lived. With the Main Force still within one point eight million kilometres of the bases, the Japanese sensors are suddenly clear of missiles. Kaigun-Taisa Sakubara orders another course reversal and the Main Force moves within a million kilometres of its target with no sign of further missile attacks. It appears that after refining their tactics to draw the Main Force well into light missile range before opening fire, the Scimitarans were unable to fully execute their plan because they ran out of ordnance.

The Main Force approaches the Scimitaran home world, and opens fire on the bases at two hundred and forty thousand kilometres. All the battleships and heavy cruisers still have approximately seventy percent of their maintenance supplies so that is not an immediate concern. They continue closing to 165,000 km, just beyond the longest range at which any Scimitaran energy weapon has fired, and systematically destroy all six bases.

Kaigun-Taisa Sakubara has no idea how surface-based weapons may be waiting for the Main Force, so he orders a very gradual advance toward the moon.  The fleet finally comes under fire at 89,000 km, with one hundred and twenty-one strength-1 hits spread among the four battleships. Kaigun-Taisa Sakubara pulls his ships back five thousand kilometres, then orders all ships to engage the surface weapons with 12cm secondary armament, to reduce collateral damage, and use their 25cm main armament against the orbital shipyard complex.

The surface is dominated by jungle, which makes locating the surface-based railguns a difficult task. A general bombardment of each suspected location is the only option, which leads to the destruction of nearby installations and significant civilian casualties. Even so, it is a large population so there should still be sufficient workers once the Scimitarans are conquered. The primary concern is the rapidly depleting maintenance supplies of the fleet. Destruction of the bases required almost six minutes of continuous fire from 25cm lasers, dropping most ships below sixty percent, and now the slow progress in eliminating the Scimitaran railguns, combined with the five second recycle time of the 12cm laser turrets, is draining them very quickly.

After seven minutes of targeting the surface, the heavy cruiser Atago suffers a maintenance failure in one of her twin 12cm laser turrets that cannot be repaired. Only half of the STO weapons have been eliminated and half of the shipyard complex. Kaigun-Taisa Sakubara orders Atago to maintain fire with her other weapons. There are no reserve maintenance supplies in the Scimitar system, as the Kido Butai has exhausted those carried by the two available replenishment ships. Kenyo Maru has returned to Earth for resupply, but will not return to Scimitar for over three weeks. Every ship in the Main Force, with the exception of Maya, has less than twenty-five percent of their normal maintenance supply.

Within a minute, Atago loses a second turret and one of her 25cm lasers, so Kaigun-Taisa Sakubara orders her to leave the fleet and head back to Earth for repairs. The battleship Ise is the next ship to be affected, as one of her 25cm lasers fails. About thirty percent of the STOs remain, while the signature of the shipyard complex has been reduced to approximately twenty percent of its original value. There is also the possibility that the Scimitar home world has other STO batteries dedicated to point defence, which have not yet fired and therefore remain undetected.

Ise loses two more 25cm lasers, just as Nagato suffers a failure in one of her twin 12cm turrets. When Ise loses a fifth laser from her main armament and a laser turret, she too is ordered home. If there are still Scimitaran warships somewhere in the system, the Kido Butai cannot afford to have ships with no maintenance and most of their weapons disabled. Nagato is the next to depart, with half her laser turrets inoperable. Of the five ships remaining, three are out of maintenance supplies and the other two have only ten percent. Hyūga has lost a laser turret but is still firing.

Kaigun-Taisa Kozu, commanding the Kido Butai, orders the Main Force to cease fire, then orders the two Kongo class battlecruisers to leave the Carrier Striking Force and join the Main Force. Forty minutes later, Kirishima and Hiei resume the bombardment. After seven minutes of continuous fire, using forty percent of their maintenance supplies, the venerable battlecruisers destroy the shipyard complex and the remaining railguns, at least those that have been detected.

Although the Main Force has been rendered combat ineffective, the primary objective of the attack has been achieved. With the primary shipyard of the Scimitar Empire now destroyed, the threat of new ships being built has been removed. Kaigun-Taisa Kozu decides to take the Kido Butai back to Earth for resupply and overhaul, leaving Kirishima and Hiei to join the light cruiser Kuma in overseeing the ongoing salvage operations, just in case a hitherto undetected Scimitaran fleet makes an appearance. The main task now will be building up a sufficient ground force to launch an invasion of the Scimitaran home world.

That home world has suffered considerably as a result of the recent bombardment. The thermal signature of the population has fallen by forty percent and the EM signature has dropped by twenty percent, indicating significant damage and loss of life. The energy weapon impacts have thrown so much dust into the atmosphere that the surface temperature will be twenty degrees lower than normal, although with the vast temperature range during its orbit that will be less of a problem than for most species.

Offline Steve Walmsley (OP)

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Re: Empire of the Stars - Updates Thread
« Reply #14 on: July 14, 2024, 05:41:54 AM »
This is the second of two posts today

22nd December 1973
A survey of the ancient construct on Takahama-B II reveals that it will improve research into defensive systems by up to forty percent.

8th January 1974
The Covenant of Velsharoon is detected in Okami for the first time. Okami is a dim red dwarf that lies beyond Sol’s innermost jump point and is the most direct route, via Lalande and Yao, to the Hadano system. The Velsharoon have been steadily advancing their exploration ships into the Empire of Japan for several years. With the recent action against the Mizuchi and the battles against the Scimitar Empire, the ‘Hadano Problem’ has been pushed down the priority list. Now the Covenant is a single transit from Earth, that priority rises considerably. Ten Fukurokuju class orbital habitats, holding a population of two million, and a Yokosuka class maintenance base are in orbit of the chosen comet in the Hadano system. Seventeen financial centres, ten maintenance facilities, a refuelling station and a tracking station are on the surface. The light cruiser Noshiro is on permanent station.

Daigensui-Kaigun-Taishō Takagi decides that several additional habitats are required before making a claim on the system, due to concerns that an unsuccessful claim could damage relations with the Covenant and the People’s Republic of Xiama. Takagi knows those relations will be extremely damaged at some point in the future, but he would prefer that to be at a time of the Empire’s choosing.

13th March 1974
The recent development of Magneto-Plasma Drives, and several other new systems, has prompted the creation of updated designs for the major warship classes. Two Nagato class battleships, all four Takao class cruisers and five Nagara class light cruisers enter the shipyard for a year-long refit. This refit program will prevent any significant offensive operations until mid-1975, although there will be sufficient warships to cover an invasion of the Scimitar home world once the required ground forces have been assembled.

5th July 1974
A 10,800-ton Bransk class ship of the Followers of Zharov enters Fiji, the first time this particular alien race has been detected in the system. The Covenant of Velsharoon has also been detected in Fiji in the past. With the Imperial Navy distracted by other events, plus the need to build up Takamatsu as the primary source of Gallicite, the project to claim Fiji and prevent the Zharovians from exploring the territory of the Empire of Japan has taken a back seat. There are too many competing priorities.

A colony of one point eight million has been established on the first moon of Fiji IV, a superjovian with twenty-eight million tons of accessibility 1.0 Sorium, and a Yokosuka class maintenance base is in orbit, but the colony has not yet developed to the point where a claim is likely to succeed. Part of the problem is the colony cost of the moon, which requires 300 infrastructure units for each million colonists and is therefore a significant demand on the Empire’s lift capacity.  Four Amateratsu class terraforming stations are in orbit to improve the environmental conditions, but it is a slow process. Meanwhile, the Imperial Navy has discovered a third Zharovian system, named Iturup, beyond the contact system of Sakhalin and the second system in the chain, Paramushir. There is still no sign of any Zharovian colonies.



12th September 1974
The population of Hadano reaches two point eight million and the number of financial centres has increased to thirty-four. A claim of sovereignty is issued to the People’s Republic of Xiama, when one of their ships enters the system. The Xiamen accept the claim and withdraw. A similar demand will be made the next time a Covenant ship is detected in Hadano.

9th November 1974
The Covenant of Velsharoon accepts Japanese sovereignty over the Hadano system. This should result in the recall of Covenant survey ships from the territory of the Empire of Japan and finally resolve the ‘Hadano Problem’.

15th November 1974
Several years ago, an ancient construct was discovered on the first planet of Osaka-B. The M4-V star follows an eccentric orbit of Osaka-A that moves between fifteen and thirty-two billion kilometres during its orbital period of almost two thousand, four hundred years, and at the time of the survey was over twenty-two billion kilometres from the primary. Once the construct was surveyed and found to boost research into sensors by eighty percent, it became a priority for colonisation, although that was delayed by two factors. Firstly, Osaka-B I was a barren world with a surface temperature approaching three hundred degrees, although the effect on infrastructure requirements was reduced by tide-locking. The more significant problem was distance, as neither star in the Osaka system had a planet with a Lagrange point.

A stabilisation ship was sent on the long journey to Osaka-B and spent a year stabilising a Lagrange point at the fourth planet, a Uranus-sized gas giant. Unfortunately, Osaka-A had only three terrestrial planets, including the Rasheed home world, now named New Osaka, and a dwarf planet. The largest was Osaka-A I, a Venusian world with an atmosphere of almost two hundred atm but more importantly a mass twice that of Earth. Even so, the task to stabilise the Lagrange required over three years. That task is now complete, so the colonisation and terraforming of Osaka-B I can begin.

1st December 1974
A new Zuijin force has been discovered in the Sakata system, four jumps from Sol via Barnard’s Star, Nagasaki and Kama. A Gekko reconnaissance drone from the survey cruiser Sagiri detected the usual three bases, a Devastator, Terror and Vanquisher, plus a common grouping of three 9600-ton destroyer types – a Hunter, Impaler and Razor – and a Ravager escort cruiser. There are now six known Zuijin systems; Kagoshima and Beta Hydri, which contain powerful Zuijin fleets, Tarawa and Kwajalein, which are both adjacent to Makin in Xiamen territory,  Matsuyama, which has three bases and a squadron of particle lance-armed Raptors, and now Sakata. Once the current refits are completed, new campaigns against the Zuijin will be launched.

4th December 1974
The survey cruiser Usugumo probes a jump point in Uchigō, five transits from Sol via Proxima, Aomori, Sendai, and Yonago. She emerges three hundred million kilometres from an orange K5-V primary with four rocky planets one of which is a cold desert world with a nitrogen-oxygen atmosphere of 0.58 atm. As Usugumo is out of reconnaissance drones, she heads in-system to investigate directly. As she moves away from the jump point, Usugumo detects active emissions from an approaching Hunter class destroyer and immediately reverses course.

She is just over two million kilometres, and thirteen minutes, from the jump point when her thermal sensor detects eight inbound missiles. Usugumo has no point defence, so she can only hope to survive. All eight strike the survey cruiser with strength-3 laser warheads, causing significant damage. Fortunately, her sole engine remains intact. Unfortunately, her jump drive does not. She can run, but she cannot escape. She moves to the jump point anyway, with her crew desperately trying to fix the jump drive before another salvo of missiles arrives.

Thirty-four minutes later, another eight laser torpedoes arrive and inflict massive damage, destroying her engine, most of her survey sensors and the majority of her fuel storage. A third salvo arrives after another twenty-six minutes, but Usugumo still survives. Half her crew is dead and she has barely any functioning internal systems. There are still sufficient supplies to repair the jump drive and her manoeuvring thrusters will get her though the jump point so all is not lost. Her active sensor, one of the few operable systems, detects three destroyers and a Ravager class escort cruiser approaching her position. Her crew is still working frantically when a salvo of light missiles blows Usugumo to pieces. She will be avenged.

8th December 1974
The chain of Zharovian systems, starting with Sakhalin and leading away from Fiji increases to four, with the probe of a jump point in Iturup. Kunashir has a yellow G0-V primary and a single rocky planet. A fleet of eleven Zharovian ships ranging from 8700 tons to 83,000 tons is stationed on the Kunashir – Iturup jump point – perhaps an indication that their home system is not far away.

29th December 1974
The colony in Fuji reaches a population of two million, with twenty financial centres and six hundred units of infrastructure. The number of Zharovian ships in Fuji has steadily increased in recent weeks so Daigensui-Kaigun-Taishō Takagi takes the decision to claim sovereignty over the system. The Followers of Zharov accept that claim. With Hadano accepted as Japanese territory by the Velsharoon and Xiamen, Truk also accepted by the Velsharoon and now Fiji accepted by the Zharovians, the borders of the Empire of Japan are secure, at least in political terms. The only potential exception is the Sapporo aliens if they make it past the Zuijin in Kagoshima.

9th February 1975
Matsukaze, one of the new Shimakaze class survey cruisers, is attacked and destroyed by Zuijin forces in the Kolombangara system, five transits from Hadano and three from Eniwetok, on the far side of known Xiamen territory. Kolombangara has seven planets and sixty moon, although none appeared even semi-habitable, so no reconnaissance drone was used. The attacking force comprised four Raptor class destroyers and two Avenger class escorts, one of which was damaged by a joint Rakurai strike from Matsukaze and her B1N ‘Ryusei’.

8th March 1975
Abukuma and Niyodo complete their refits to become the first pair of Nagara III class light cruisers. In comparison to the preceding Nagara II-Ha class, they have new magneto-plasma drives, upgraded fire controls, longer-ranged point defence railguns and a third generation missile jammer. For now, they are the fastest warships in the Imperial Japanese Navy.

Nagara III class Light Cruiser      18,000 tons       600 Crew       3,824.4 BP       TCS 360    TH 2,304    EM 0
6400 km/s      Armour 6-61       Shields 0-0       HTK 116      Sensors 8/16/0/0      DCR 10-5      PPV 108
Maint Life 1.98 Years     MSP 1,827    AFR 259%    IFR 3.6%    1YR 615    5YR 9,231    Max Repair 576 MSP
Troop Capacity 500 tons     Boarding Capable   
Kaigun-Chūsa    Control Rating 2   BRG   AUX   
Intended Deployment Time: 12 months    Morale Check Required   

Koga-Murakama KM-1152-B Magneto-Plasma Drive (2)   Power 2304   Fuel Use 45%   Signature 1152   Exp 12%
Fuel Capacity 756,500 Litres    Range 16.8 billion km (30 days at full power)

Kentaro-Sakura KS-20B Far Ultraviolet Laser (12)    Range 320,000km     TS: 6,400 km/s     Power 10-5     ROF 10       
Takashi Kinetics TK-10B Railgun (12x4)    Range 30,000km     TS: 6,400 km/s     Power 3-3     ROF 5       
Type 32 Go-31E Laser Fire Control (2)     Max Range: 320,000 km   TS: 6,500 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (3)     Total Power Output 107.3    Exp 5%

Type 27 Go-11C Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 33 Go-53C Passive Sensor (1)     Sensitivity 8     Detect Sig Strength 1000:  22.4m km
Electronic Warfare Jammers:   Fire Control 2    Missile 3   

Ground Forces
1x Naval Landing Force

10th April 1975
The four Takao class heavy cruisers, Atago, Chōkai, Maya and Takao, complete their refit to the Takao II class. The upgrades include a more efficient jump drive, magneto-plasma drives, fire controls for the main armament and a third generation missile jammer. A combat information centre and a main engineering deck have been added to the design. Japanese shipwright chose not to introduce a new twin laser turret and associated fire control with 20,000 km/s tracking due to the cost and time involved, but these will be included in the next heavy cruiser design.

Takao II class Heavy Cruiser      27,000 tons       864 Crew       5,512.7 BP       TCS 540    TH 3,456    EM 4,260
6400 km/s    JR 3-50      Armour 4-80       Shields 142-532       HTK 171      Sensors 16/16/0/0      DCR 14-5      PPV 146
Maint Life 2.03 Years     MSP 3,286    AFR 417%    IFR 5.8%    1YR 1,064    5YR 15,959    Max Repair 576 MSP
Kaigun-Taisa    Control Rating 4   BRG   AUX   ENG   CIC   
Intended Deployment Time: 10 months    Morale Check Required   

Komatsu KMJ-270-B Jump Drive     Max Ship Size 27000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-1152-B Magneto-Plasma Drive (3)    Power 3456    Fuel Use 45%    Signature 1152    Exp 12%
Fuel Capacity 1,100,000 Litres    Range 16.3 billion km (29 days at full power)
Shīrudo-71A Shield Generator (2)     Recharge Time 532 seconds (0.3 per second)

Kentaro-Sakura KS-25A Far Ultraviolet Laser (10)    Range 320,000km     TS: 6,400 km/s     Power 16-4     ROF 20       
Twin Kentaro-Sakura KS-12A Laser Turret (6x2)    Range 200,000km     TS: 16000 km/s     Power 8-8    ROF 5       
Type 27 Go-31C Turret Fire Control (2)     Max Range: 64,000 km   TS: 16,000 km/s    ECCM-2   
Type 32 Go-31E Laser Fire Control (2)     Max Range: 320,000 km   TS: 6,500 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (3)     Total Power Output 107.3    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 28 Go-71B Fighter Detection (1)     GPS 160     Range 13.8m km    Resolution 10
Type 27 Go-11C Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 33 Go-51C Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km

Electronic Warfare Jammers:   Fire Control 2    Missile 3   

20th April 1975
Nagato and Mutsu complete their refits to the Nagato II class. The new design includes the same upgrades as the Takao II class and the retention of the existing laser turrets. With two battleships and four heavy cruisers available, Daigensui-Kaigun-Taisho Takagi decides the invasion of the Scimitaran home world can begin. The six ships reform the Main Force of the Kido Butai and head for the Scimitar system to eliminate any remaining surface defences.

Nagato II class Battleship      54,000 tons       1,719 Crew       10,598.8 BP       TCS 1,080    TH 6,912    EM 10,650
6400 km/s    JR 3-50      Armour 5-127       Shields 355-532       HTK 344     Sensors 16/16/0/0     DCR 32-5     PPV 301
Maint Life 2.10 Years     MSP 6,425    AFR 729%    IFR 10.1%    1YR 1,950    5YR 29,244    Max Repair 576 MSP
Kaigun-Taisa    Control Rating 4   BRG   AUX   ENG   CIC   
Intended Deployment Time: 10 months    Morale Check Required   

Komatsu KMJ-540-B Jump Drive     Max Ship Size 54000 tons    Distance 50k km     Squadron Size 3
Koga-Murakama KM-1152-B Magneto-Plasma Drive (6)    Power 6912    Fuel Use 45%    Signature 1152    Exp 12%
Fuel Capacity 2,258,000 Litres    Range 16.7 billion km (30 days at full power)
Shīrudo-71A Shield Generator (5)     Recharge Time 532 seconds (0.7 per second)

Kentaro-Sakura KS-25A Far Ultraviolet Laser (24)    Range 320,000km     TS: 6,400 km/s     Power 16-4     ROF 20       
Twin Kentaro-Sakura KS-12A Laser Turret (10x2)    Range 200,000km     TS: 16000 km/s     Power 8-8    ROF 5       
Type 27 Go-31C Turret Fire Control (2)     Max Range: 64,000 km   TS: 16,000 km/s    ECCM-2   
Type 32 Go-31E Laser Fire Control (2)     Max Range: 320,000 km   TS: 6,500 km/s    ECCM-2   
R-35B Stellarator Fusion Reactor (5)     Total Power Output 178.9    Exp 5%

Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 25 Go-12B Capital Ship Sensor (1)     GPS 23040     Range 109.1m km    Resolution 120
Type 28 Go-71B Fighter Detection (1)     GPS 160     Range 13.8m km    Resolution 10
Type 25 Go-61B Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Type 33 Go-51C Passive Sensor (1)     Sensitivity 16     Detect Sig Strength 1000:  31.6m km
Electronic Warfare Jammers:   Sensor 2    Fire Control 2    Missile 3   

26th April 1975
Taihō and Junyō complete their refits to the Taihō II class, receiving new engines and a third generation missile jammer. In addition, their thirty-six Mitsubishi A2M3 'Shinden' fighters are replaced by thirty-six Mitsubishi A3M 'Hayabusa' (Peregrine Falcon) fighters. The A3M is faster than the A2M and has a longer-ranged cannon, although its range is seventeen percent less and it is three tons larger, which means that Taihō and Junyō have to sacrifice one of their two Aichi E1A3 scouts to create the necessary hangar space. The A2M will be passed on to the strikegroups of the older Akagi class carriers.

Taihō II class Carrier      54,000 tons       917 Crew       7,378.9 BP       TCS 1,080    TH 6,912    EM 0
6400 km/s      Armour 1-127       Shields 0-0       HTK 242      Sensors 8/8/0/0      DCR 26-4      PPV 0
Maint Life 1.53 Years     MSP 4,720    AFR 897%    IFR 12.5%    1YR 2,286    5YR 34,291    Max Repair 576 MSP
Hangar Deck Capacity 24,000 tons     Magazine 867 / 0   
Kaigun-Taisa    Control Rating 3   BRG   AUX   PFC   
Intended Deployment Time: 6 months    Flight Crew Berths 480    Morale Check Required   

Koga-Murakama KM-1152-B Magneto-Plasma Drive (6)    Power 6912    Fuel Use 45%    Signature 1152    Exp 12%
Fuel Capacity 2,673,000 Litres    Range 19.8 billion km (35 days at full power)

Rakurai-Ro Anti-ship Missile (72)    Speed: 31,250 km/s    Range: 8m km    WH: 12    Size: 12    TH: 125/75/37

Type 28 Go-71B Fighter Detection (1)     GPS 160     Range 13.8m km    Resolution 10
Type 25 Go-21B Missile Detection (1)     GPS 8     Range 4.5m km    MCR 406.2k km    Resolution 1
Type 27 Go-11C Search Sensor (1)     GPS 8640     Range 66.8m km    Resolution 120
Type 26 Go-63B Passive Sensor (1)     Sensitivity 8     Detect Sig Strength 1000:  22.4m km
Type 33 Go-53C Passive Sensor (1)     Sensitivity 8     Detect Sig Strength 1000:  22.4m km
Electronic Warfare Jammers:   Missile 3   

Strike Group
36x Nakajima B1N 'Ryūsei' Carrier Strike   Speed: 10001 km/s    Size: 7.5
36x Mitsubishi A3M ‘Hayabusa’ Fighter   Speed: 15829 km/s    Size: 5.56
1x Aichi E1A3 Scout   Speed: 7502 km/s    Size: 5

Mitsubishi A3M ' Hayabusa' class Fighter      278 tons       1 Crew       91.5 BP       TCS 6    TH 88    EM 0
15829 km/s      Armour 1-3       Shields 0-0       HTK 1      Sensors 0/0/0/0      DCR 0-0      PPV 1.65
Maint Life 1.99 Years     MSP 25    AFR 56%    IFR 0.8%    1YR 8    5YR 126    Max Repair 44 MSP
Kaigun-Shōsa    Control Rating 1   
Intended Deployment Time: 0.2 days    Morale Check Required   

Koga-Murakama KM-88-DB Ion Engine (1)    Power 88    Fuel Use 1474.81%    Signature 88    Explosion 25%
Fuel Capacity 8,000 Litres    Range 0.35 billion km (6 hours at full power)

MK III Cannon (1x2)    Range 30,000km     TS: 15,829 km/s     Power 1.5-1.5     ROF 5       
Type 33 Go-34E Cannon Fire Control (1)     Max Range: 64,000 km   TS: 16,000 km/s    ECCM-2   
R-1B Stellarator Fusion Reactor (1)     Total Power Output 1.5    Exp 10%

Type 25 Go-24B Fighter Sensor (1)     GPS 2     Range 2m km    MCR 181.7k km    Resolution 1

1st May 1975
The Main Force, once again under the command of Kaigun-Taisa Sakubara Kogo, moves within 90,000 km of the fourth moon of Scimitar I, otherwise known as the Scimitaran home world, and comes under fire from numerous surface-to-orbit weapons, receiving one hundred and thirty-four strength-1 hits. The Scimitar Empire has been busy since the last bombardment in November 1973, as the Main Force detects an STO signature of more than nine thousand tons as it pulls back out of range and. The total ground force signature has increased to three hundred and fifty thousand tons, which is likely to be well over one million tons once fortifications are taken into account.

Main Force
Nagato II class Battleship: Mutsu, Nagato
Takao II class Heavy Cruiser: Atago, Chōkai, Maya, Takao

Fortunately, the orbit of the moon¬’ parent superjovian has reached a point where jungle terrain that made the previous bombardment difficult has died back, leaving savanna as the dominant terrain and exposing the positions of the surface-based weapons. The increase in detected ground force tonnage is partly due to the improved visibility from orbit. In addition, Kaigun-Taisa Sakubara has ordered his ships to only use their main armament, which will use less maintenance supplies than the twin turrets and generate more overall damage, albeit against one target rather than two.

After ten minutes of bombardment, all the known surface-to-orbit weapons are eliminated, so the Main Force advances once again and comes under fire at 60,000 km, prompting a further twelve minutes of bombardment before the Main Force can move unhindered into orbit. By this point, there is sufficient dust in the atmosphere to drop the temperature by thirty-six degrees, about forty percent of which remained from the bombardment in November 1973. The Main Force moves to the fifteenth moon of Scimitar I to eliminate a small STO force guarding that colony, while the Japanese troop transport fleet begins moving ground forces from their assembly point at the small Japanese colony the first moon of Scimitar II, to a temporary holding area on the first moon of Scimitar I. The Imperial Army force is too large for a single drop, so the holding area is to minimise the delay before the second wave arrives.

1st June 1975
The invasion of the Scimitaran home world begins. The first wave comprises the 1st, 6th, 7th and 8th divisions, each with three infantry regiment and one cavalry (medium tank) regiment, plus the 3rd (Armoured) Division, which has four heavy tank regiments. The total force size is 450,000 tons and includes over fifty thousand infantrymen and almost a thousand medium and heavy tanks. They are heavily outnumbered by the fortified Scimitaran defenders. Fifteen hundred infantry are killed within a few hours of landing and casualties on the first day are close to five thousand infantry and twenty-five tanks.

3rd June 1975
The conditions on the moon are worsening, with the surface temperature rising to almost one hundred degrees. The invasion did not take full account of the intense climate conditions, leaving the Imperial Army fighting an opponent adapted for his environment, while lacking the training and equipment to combat them effectively. Daily losses rise to almost fifteen thousand, while the casualties inflicted on the enemy are approximately one third of that.

June 4th 1975
Three fresh divisions land on the Scimitaran home world. Every combat division in the Imperial Army is now on the surface of the Scimitaran home world. The first wave has taken substantial losses, with two of the five divisions broken up to replace the losses in the strongest three divisions. Now there are five infantry divisions and the 3rd (Armoured) Division, which has taken on the two cavalry regiments from the lost divisions to replace one of the four heavy tank regiments, which has also been distributed to the others to replace losses. The total force size is 560,000 tons, which is one quarter more than the initial landing. The ground-signature size of the Scimitaran defenders has fallen to 280,000 tons, compared to 330,000 tons when the invasion began.

The Scimitaran ground forces include construction and other utility vehicles, plus the Scimitarans are suffering disproportionate losses among their armoured forces, which may soon begin to influence the battle. On the negative side, it appears the Scimitarans have deployed a significant number of updated units since the ground engagements eighteen months ago, which are a much closer match for the Imperial Army, and there will be no further landing waves. For now, there are no plans for evacuating the landing force as Daigensui-Kaigun-Taisho Takagi wishes to see how the reinforcements affect the battle.

6th June 1975
Losses continue to mount. One of the five infantry divisions is broken up to reinforce the other four, with some tanks going to the armoured division. Even with the restructure, the remaining divisions are understrength, with the total size of the Imperial Army force at 410,000 tons. The Scimitar Empire is also finally suffering heavy losses too, with many of the Japanese tank and cavalry regiments making breakthroughs. While the Scimitarans are still numerous, their organization is very disrupted. The total Scimitar casualties are approximately half of their original force.

10th June 1975
Another division is broken up to reinforce the remaining four. Despite massive Japanese losses, the tide has finally turned, with Scimitaran losses significantly exceeding those of the Imperial Army. The Scimitar Empire is almost entirely out of armour, while the 3rd (Armoured) Division exceeds it starting size due to the addition of remnants from different cavalry regiments, orphaned by the dissolution of the parent divisions.

14th June 1975
All remaining Scimitaran forces have been eliminated and the population has surrendered to the victorious Japanese forces. Despite sixty percent casualties among all the combat divisions of the Imperial Army, this glorious victory is the most significant in the history of the Empire of Japan.

The Scimitaran population is almost one point three billion, or about half of the total Japanese population, which creates an enormous pool of potential future labour. This population was probably considerably larger before the two periods of heavy planetary bombardment. The Scimitarans have very different environmental tolerances, with an oxygen range of 0.104 atm to 0.415 atm, gravity between 0.31G and 0.93G and a remarkable temperature range between 13.6C and 181C, due to the eccentric orbit of the home world’s parent gas giant. The Scimitarans can be used to man installations on worlds that would be inhospitable to Japanese settlers.

A large number of installations remain intact, including thirty-five research facilities, seven hundred construction factories and eight hundred mines. These will be very useful in the long-term, but for now the ongoing manpower crises continues, so very few can be utilised immediately. It may prove necessary to retain some ‘free’ Scimitarans, if they demonstrate sufficient discipline and their respect for the Empire of Japan. The technological gains are minimal, due to the superior Japanese scientific knowledge, but include better ground-to-orbit shuttles, improved refuelling speed and a science department for survey ships. The equivalent of sixty thousand wealth is added to the Empire’s reserves.

Intact Installations
Research Facility: 35
Ground Force Construction Complex: 8
Construction Factory: 701
Ordnance Factory: 254
Mine: 802
Fuel Refinery: 171
Maintenance Facility: 253
Financial Centre: 354
Deep Space Tracking Station: 4
Mass Driver: 1
Military Academy: 2
Naval Headquarters: 1
Spaceport: 1
Refuelling Station: 1
Ordnance Transfer Station: 1
Cargo Shuttle Station: 1
Infrastructure: 4,286
Low Gravity Infrastructure: 84

The moon has substantial deposits of accessibility 1.0 Duranium, plus moderate deposits of all the remaining Trans-Newtonian minerals at medium to high accessibility. The Gallicite deposit in particular, while limited in size at 142,000 tons, will be useful for a while due to its high accessibility. However, the greatest short-term benefit of the conquest of the Scimitarans is the mineral stockpile on their home world, including one hundred and thirty thousand tons of Duranium and one hundred and twenty thousand tons of Gallicite.

Scimitar I - Moon 4 Survey Report
Duranium:   1,321,721   1.00
Neutronium:   146,037   0.80
Corbomite:   362,945   0.70
Tritanium:   335,953   0.60
Boronide:   213,568   0.40
Mercassium:   96,853   0.60
Vendarite:   612,253   0.60
Sorium:   312,987   0.80
Uridium:   147,868   0.40
Corundium:   109,160   0.50
Gallicite:   141,829   0.90

Shipbuilding on Earth, with the exception of the recent refits, has been minimal for almost a year. The Gallicite from the salvage operations in Scimitar, around twelve thousand tons, helped at first, but after that ran out the warship refits, new fighters and production of maintenance supplies were given priority. Even then, there were shipbuilding pauses when the Gallicite stockpile on Earth reached zero. The fresh injection of Gallicite, and eventually significant production from the Scimitar home world, will ease that problem significantly and allow a full shipbuilding program once again.

The Scimitaran fuel and maintenance stockpiles will also ease any short-term concerns in those areas, more than doubling the existing Imperial stockpile on Earth. In the long-term, access to the vast Sorium reserves of Scimitar I, the superjovian around which the Scimitaran home world orbits, will secure the fuel supply of the Empire. Neptune, which has been the home of the Imperial Navy’s harvester fleet since the dawn of the Interstellar Era, has limited supplies and its accessibility has started to fall.

Despite the famous victory, the work of the Imperial Army is not yet complete. There is a Scimitaran ground force on the fifteenth moon of Scimitar I that must be eliminated before the entire system can be deemed secure. All the remaining ground forces are loaded on to transports for one more battle. Once that moon is secure, the surviving infantry regiments will form the basis for the Imperial garrison on the Scimitaran home world.

24th June 1975
The Scimitaran ground forces on the fifteenth moon of Scimitar I are wiped out. Due to the fighting and the earlier bombardment of the surface-based railguns, there is nothing left of the colony they were defending. The Imperial Army took heavy casualties once again and now comprises just three understrength divisions, one of which is a polyglot of different armoured formations. Rebuilding the Imperial Army will be a major task for the Empire of Japan over the next few years.

23rd August 1975
Daigensui-Kaigun-Taisho Takagi decides that the small Japanese colony on the first moon of Scimitar II, used as the assembly area during the year prior to the invasion, will remain the primary Japanese base in the Scimitar system. While the home world of the Scimitarans is heavily populated and the system’s primary source of industry and mining, it is not suitable for a large Japanese colony due to its extreme orbit. Terraforming would not solve the hundred and fifty degree temperature range and could kill a substantial number of Scimitarans, reducing the potential pool of labour.

A large ground combat force will be maintained on the Scimitaran home world, but the minerals, fuel and supplies produced by that moon will be transported to first moon of Scimitar II, which henceforth will be known as the Scimitar Naval Base. Infrastructure to support the necessary population will be moved from the Scimitaran home world, where it was built to counteract the freezing temperatures caused by dust from the recent bombardments. This may result in some Scimitaran deaths at the aphelion of their parent superjovian’s orbit, but there are well over a billion Scimitarans and the most extreme situation is only a colony cost of 0.27, so the relative loss will be minor. Over time, as the dust settles, the effect will decrease.

20th September 1975
A civilian mining company from Germany, Forster Ores, gains access to the geological survey data on the Scimitar system and decides to establish a mining colony on the eighteen moon of Scimitar III. As the data was obtained via the interrogation of Scimitaran prisoners, no Imperial Navy ship has actually visited Scimitar III or Scimitar IV and their combined thirty-eight moons.

As soon as the two civilian mining complexes are unloaded, along with a small garrison force of six hundred infantry and a few anti-tank teams, they come under attack from Scimitaran ground forces already in place on the moon. All the Imperial Navy troop transports have left the Scimitar system, so there is no immediate relief force. A single transport, Shinshu Maru, begins loading the newly trained 5th Tank Regiment from Earth, while the larger Sagami Maru heads back to the Scimitaran home world, now renamed Scimitar Prime, to load the 3rd (Armoured) Division should that prove necessary. The light cruiser Tenryu, one of two in orbit of the Scimitar Naval Base, moves to Scimitar III to assess the situation.

The opposing Scimitaran ground force consists of approximately five thousand infantry and supporting elements of the latest Scimitaran designs, so the combat is one-sided. By the time Tenryu arrives, the battle is almost over, with barely a hundred surviving garrison troops. As she moves into orbit of Scimitar III, she detects a ground forces signature on the eighteenth moon of 6800 tons, including some sensor emissions that suggest surface-based railguns may be present, plus a small population signature. There is also a ground forces signature of 6000 tons in orbit of the fifteenth moon. It appears the battle for the Scimitar system is not yet over.

Daigensui-Kaigun-Taisho Takagi orders the Main Force reformed and sent to Scimitar and instructs Tenryu to check the moons of Scimitar IV for any further holdout Scimitaran colonies. She finds nothing, so the Imperial Army can focus on the two colonies around Scimitar III. The Forster Ores mining colony cannot be saved in time and the remaining troops are overrun.

3rd October 1975
The Main Force eliminates the Scimitaran railguns on the surface of the eighteenth moon of Scimitar III, entirely destroying the small colony in the process. There are now two small Scimitaran ground force signatures of 6000 and 5000 tons respectively on the fifteenth and eighteenth moons. The Main Force heads for home, leaving the moons to the Imperial Army.

3rd November 1975
The 3rd (Armoured) Division defeats both of the small Scimitaran ground forces with minimal losses. The system is finally clear of Scimitaran populations.
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