Author Topic: After the Fall - Imperial Japanese Navy (2)  (Read 5290 times)

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Offline Steve Walmsley (OP)

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After the Fall - Imperial Japanese Navy (2)
« on: July 07, 2013, 06:47:02 AM »
Imperial Japanese Navy

The doctrine of the Imperial Navy is uncompromisingly based on carrier warfare. Any hostile forces will be destroyed by long-range strikes from the Akagi class carriers. The duty of the rest of the Fleet is to protect the carriers while they carry out this mission. In fact, the Japanese research and development effort is so focused on this goal, no energy-based weapons have been developed beyond gauss cannons that are used for close-in missile defence.

The two Akagis are 18,000 ton ships, each with a strikegroup of eighteen A7M Zero fighters and a single Nakajima C6N Saiun scout. They are unarmed, relying on their Agano and Sendai class escorts for protection. Some Japanese military analysts have criticised the design for its limited armour protection and short range, especially considering the fuel demands of the fighters. However, this was the maximum hull size permitted by the available shipyards so the Japanese designers concentrated on the largest possible strikegroup.

Akagi class Carrier   18,000 tons     301 Crew     2245.6 BP      TCS 360  TH 1440  EM 0
4000 km/s     Armour 4-61     Shields 0-0     Sensors 1/18/0/0     Damage Control Rating 10     PPV 0
Maint Life 2.06 Years     MSP 780    AFR 259%    IFR 3.6%    1YR 246    5YR 3696    Max Repair 144 MSP
Intended Deployment Time: 12 months    Flight Crew Berths 39    
Hangar Deck Capacity 6000 tons     Magazine 400    

Mitsubishi ION-240 Main Engine (6)    Power 240    Fuel Use 56%    Signature 240    Exp 10%
Fuel Capacity 1,000,000 Litres    Range 17.9 billion km   (51 days at full power)

OPS-30 Active Sensor (1)     GPS 17280     Range 94.6m km    Resolution 120
NOLQ-31 EM Detection Sensor (1)     Sensitivity 18     Detect Sig Strength 1000:  18m km

Type 100 Anti-ship Missile (100)  Speed: 28,800 km/s   End: 14.1m    Range: 24.3m km   WH: 6    Size: 4    TH: 96/57/28

Strike Group
18x Mitsubishi A7M Zero Fighter   Speed: 8000 km/s    Size: 6
1x Nakajima C6N Saiun Scout   Speed: 4800 km/s    Size: 10

The A7M Zero, named after its illustrious predecessor from over 150 years ago, is the backbone of Japanese strike power. With each Zero capable of launching three missiles, a full strike from both carriers would create a wave of over one hundred Type 100 anti-ship missiles. Although primarily relying on the active sensors of the Saiun class scout during its attack, the Zero does possess its own backup active sensor with a range of three million kilometres.

Mitsubishi A7M Zero class Fighter   300 tons     2 Crew     62.2 BP      TCS 6  TH 48  EM 0
8000 km/s     Armour 1-3     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 0     PPV 1.8
Maint Life 0 Years     MSP 0    AFR 60%    IFR 0.8%    1YR 5    5YR 69    Max Repair 24 MSP
Intended Deployment Time: 0.1 months    Spare Berths 8    
Magazine 12    

Mitsubishi FIE-48 Fighter Engine (1)    Power 48    Fuel Use 388.06%    Signature 48    Exp 20%
Fuel Capacity 15,000 Litres    Range 2.3 billion km   (3 days at full power)

Launch Rail (3)    Missile Size 4    Hangar Reload 30 minutes    MF Reload 5 hours
Type 100 Anti-ship Missile (3)  Speed: 28,800 km/s   Range: 24.3m km   WH: 6    Size: 4    TH: 96/57/28

Mitsubishi FFC-1 Missile Fire Control  (1)     Range 28.8m km    Resolution 100
Mitsubishi FSS-1 Active Sensor (1)     GPS 480     Range 2.9m km    Resolution 100

The Saiun class scout has two missions. While its primary function is to provide sensor coverage for a strikegroup of Zeroes, it is also designed to operate as an independent, long-range scout.

Nakajima C6N Saiun class Scout   500 tons     16 Crew     108.6 BP      TCS 10  TH 48  EM 0
4800 km/s     Armour 1-5     Shields 0-0     Sensors 1/18/0/0     Damage Control Rating 0     PPV 0
Maint Life 0 Years     MSP 0    AFR 100%    IFR 1.4%    1YR 22    5YR 335    Max Repair 48 MSP
Intended Deployment Time: 0.8 months    Spare Berths 0    

Mitsubishi FIE-48 Fighter Engine (1)    Power 48    Fuel Use 388.06%    Signature 48    Exp 20%
Fuel Capacity 50,000 Litres    Range 4.6 billion km   (11 days at full power)

OPS-32 Active Sensor (1)     GPS 5760     Range 31.5m km    Resolution 120
NOLQ-31 EM Detection Sensor (1)     Sensitivity 18     Detect Sig Strength 1000:  18m km

The Agano class light cruiser is the first line of defence against hostile missile attack. With fifteen launchers, over four hundred Type 101 anti-missile missiles and electronic systems capable of detecting and tracking incoming missiles at almost a million kilometres, the Agano class is intended to provide a protective umbrella for the Carrier Striking Forces. Four are currently in service, with Agano and Noshiro assigned to protect the Akagi, while Sakawa and Yahagi protect the Kaga.

Agano class Light Cruiser    7,500 tons     169 Crew     1178.6 BP      TCS 150  TH 600  EM 0
4000 km/s     Armour 4-34     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 3     PPV 15
Maint Life 2.35 Years     MSP 295    AFR 150%    IFR 2.1%    1YR 73    5YR 1091    Max Repair 144 MSP
Intended Deployment Time: 12 months    Spare Berths 1    
Magazine 415    Cryogenic Berths 200    

Mitsubishi ION-120 Main Engine (5)    Power 120    Fuel Use 63%    Signature 120    Exp 10%
Fuel Capacity 500,000 Litres    Range 19.0 billion km   (55 days at full power)

AMM Launcher (15)    Missile Size 1    Rate of Fire 10
FCS-34 Anti-Missile Fire Control (3)     Range 8.6m km    Resolution 1
Type 101 Anti-missile Missile (415)  Speed: 33,600 km/s   Range: 4.2m km   WH: 1    Size: 1    TH: 123/74/37

OPS-33 Missile Detection Sensor (1)     GPS 144     Range 8.6m km    MCR 941k km    Resolution 1
OPS-36 Active Sensor (1)     GPS 5760     Range 31.5m km    Resolution 120

The Sendai class light cruiser provides point-blank missile defence for the Carrier Striking Forces, destroying any hostile missiles that penetrate the defensive shield of the Aganos. Each Sendai is armed with two triple gauss cannon turrets, each with its own dedicated fire control system. With a single turret capable of firing nine rounds every five seconds, the two Sendais assigned to defend each carrier can create substantial weight of defensive fire.  The Sendai is not intended to operate alone as its only sensor is the OPS-37 Missile Detection Sensor, which has a maximum range of three million kilometres. This compromise was necessary in order to accommodate both turrets and their associated fire controls without sacrificing speed or armour protection. There are four Sendais in service. Jintsu and Kako operate with the Akagi in the First Carrier Striking Force. Naka and Sendai form part of the Second Carrier Striking Force and protect the Kaga.

Sendai class Light Cruiser    7,500 tons     163 Crew     1067.8 BP      TCS 150  TH 600  EM 0
4000 km/s     Armour 4-34     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 4     PPV 49.32
Maint Life 2.28 Years     MSP 356    AFR 112%    IFR 1.6%    1YR 93    5YR 1394    Max Repair 141 MSP
Intended Deployment Time: 12 months    Spare Berths 0    

Mitsubishi ION-120 Main Engine (5)    Power 120    Fuel Use 63%    Signature 120    Exp 10%
Fuel Capacity 500,000 Litres    Range 19.0 billion km   (55 days at full power)

Triple Gauss Cannon Turret (2x9)    Range 30,000km     TS: 16000 km/s     RM 3    ROF 5        1 1 1 0 0 0 0 0 0 0
FCS-38 Beam Fire Control (2)    Max Range: 48,000 km   TS: 16000 km/s     79 58 38 17 0 0 0 0 0 0

OPS-37 Missile Detection Sensor (1)     GPS 48     Range 2.9m km    MCR 314k km    Resolution 1

Katsuriki and her sister ship Komahashi are newly built geological survey vessels. With specially designed fuel efficient engines, spacious crew accommodation, and large engineering decks, they are intended to operate far from home for extended periods. Because this makes them vulnerable to attack, they are armed with twenty-four launch rails identical to those developed for the Zero. While this is still a limited offensive capability and would be ineffective against a significant enemy force, it may be enough to destroy or cripple a single opponent, or at least launch a defiant last ditch attack.

Katsuriki class Geological Survey Vessel   5,600 tons     102 Crew     838.2 BP      TCS 112  TH 336  EM 0
3000 km/s     Armour 2-28     Shields 0-0     Sensors 1/18/0/3     Damage Control Rating 5     PPV 14.4
Maint Life 5.66 Years     MSP 468    AFR 50%    IFR 0.7%    1YR 25    5YR 370    Max Repair 100 MSP
Intended Deployment Time: 48 months    Spare Berths 1    
Magazine 96    

Mitsubishi ION-168E Main Engine (2)    Power 168    Fuel Use 22.96%    Signature 168    Exp 7%
Fuel Capacity 750,000 Litres    Range 105.0 billion km   (405 days at full power)

Launch Rail (24)    Missile Size 4    Hangar Reload 30 minutes    MF Reload 5 hours
Mitsubishi FFC-1 Missile Fire Control  (1)     Range 28.8m km    Resolution 100

OPS-36 Active Sensor (1)     GPS 5760     Range 31.5m km    Resolution 120
NOLQ-31 EM Detection Sensor (1)     Sensitivity 18     Detect Sig Strength 1000:  18m km
Geological Survey Sensors (3)   3 Survey Points Per Hour

The Imperial Navy also operates a pair of Hakudo Maru class freighters and a pair of Nippon Maru class colony ships.

Hakudo Maru class Freighter    38,950 tons     160 Crew     644.4 BP      TCS 779  TH 1500  EM 0
1925 km/s     Armour 1-102     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 1     PPV 0
MSP 10    Max Repair 75 MSP
Intended Deployment Time: 3 months    Spare Berths 2    
Cargo 25000    Cargo Handling Multiplier 10    

Commercial Ion Drive (5)    Power 300    Fuel Use 6.19%    Signature 300    Exp 5%
Fuel Capacity 250,000 Litres    Range 18.7 billion km   (112 days at full power)

Nippon Maru class Colony Ship   23,800 tons     180 Crew     995.6 BP      TCS 476  TH 1200  EM 0
2521 km/s     Armour 1-73     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 1     PPV 0
MSP 26    Max Repair 75 MSP
Intended Deployment Time: 3 months    Spare Berths 0    
Cryogenic Berths 50000    Cargo Handling Multiplier 10    

Commercial Ion Drive (4)    Power 300    Fuel Use 6.19%    Signature 300    Exp 5%
Fuel Capacity 250,000 Litres    Range 30.5 billion km   (140 days at full power)

« Last Edit: August 02, 2013, 04:25:39 PM by Steve Walmsley »
 

Offline Maltay

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Re: After the Fall - Imperial Japanese Navy
« Reply #1 on: July 07, 2013, 10:35:11 AM »
The Katsuriki class Geo Survey Vessels do not have ammo for their Launch Rail x24.  I assume they are supposed to carry Type 100 ASM x24 in their Magazine 96.
« Last Edit: July 16, 2013, 01:36:13 AM by Maltay »
I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve.
 

Offline Maltay

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Re: After the Fall - Imperial Japanese Navy
« Reply #2 on: July 07, 2013, 10:53:37 AM »
You might like http://en.wikipedia.org/wiki/Japanese_ship-naming_conventions.  It has many of the naming conventions used by the IJN for its vessels during WW2.
« Last Edit: July 16, 2013, 01:36:37 AM by Maltay »
I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve.
 

Offline Steve Walmsley (OP)

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Re: After the Fall - Imperial Japanese Navy
« Reply #3 on: July 07, 2013, 10:55:52 AM »
You might like http://en.wikipedia.org/wiki/Japanese_ship-naming_conventions.  It has many of the naming conventions used by the Imperial Japanese Navy (IJN) for its vessels during World War 2 (WW2).

Yes, I am using something similar. All the ships in the two light cruiser classes are named after the same classes in WW2 and of course the carriers and fighters are from WW2.

Steve
 

Offline Tanj

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Re: After the Fall - Imperial Japanese Navy
« Reply #4 on: July 07, 2013, 12:20:46 PM »
Mmm, I'm not sure why but I am 100% in favour of the Japanese use of carrier doctrine  :)

I also a fan of the armed geo-survey vessels! Hopefully it will payoff in terms of survivability. I've recently been running a campaign where my Chinese faction has been deploying gauss armed survey vessels and it's worked quite well - with a little bit of role-playing a pair of them even got the drop on a US destroyer in Mars orbit.
 

Offline Brainsucker

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Re: After the Fall - Imperial Japanese Navy
« Reply #5 on: July 07, 2013, 07:58:22 PM »
I notice that the Launch Rail use hangar reload. If my memory serve right, isn't it the missile launcher didn't use hangar reload feature? Or is it a new feature for 6.30? If it is true, then it's WOW. I love it
 

Offline Charlie Beeler

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Re: After the Fall - Imperial Japanese Navy
« Reply #6 on: July 08, 2013, 07:20:38 AM »
I notice that the Launch Rail use hangar reload. If my memory serve right, isn't it the missile launcher didn't use hangar reload feature? Or is it a new feature for 6.30? If it is true, then it's WOW. I love it

That's a common name that Steve uses for "box Launcher".
Amateurs study tactics, Professionals study logistics - paraphrase attributed to Gen Omar Bradley
 

Offline Taalen

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Re: After the Fall - Imperial Japanese Navy
« Reply #7 on: July 08, 2013, 07:54:58 AM »
I loved the carriers in the NATO vs.  USSR campaign.  So I have high hopes for these ones as well. 
 

Offline UnLimiTeD

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Re: After the Fall - Imperial Japanese Navy
« Reply #8 on: July 11, 2013, 04:12:06 PM »
Ah, the good old carrier doctrine.
Somehow, I'm hoping for an onion approach for one of the factions, with huge "repair dock" ships and small offensive crafts. Because carriers are always small fighters in large ships. Well, ok, the opposite would raise questions. ;D
Looking towards the other factions.
Given the described tactic of throwing firepower at a problem, wouldn't the japanese navy need a bombardment vessel in the near future?
 

Offline Stardust

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Re: After the Fall - Imperial Japanese Navy
« Reply #9 on: July 13, 2013, 12:04:55 AM »
Why do the Zeros have 8 spare berths?
« Last Edit: July 13, 2013, 12:17:50 AM by Stardust »
 

Offline Steve Walmsley (OP)

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Re: After the Fall - Imperial Japanese Navy
« Reply #10 on: July 13, 2013, 05:46:33 AM »
Why do the Zeros have 8 spare berths?

Because of their very short deployment period, the smallest possible crew quarters provides life support for 10.

 

Offline Taalen

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Re: After the Fall - Imperial Japanese Navy
« Reply #11 on: July 13, 2013, 11:16:11 AM »
Perhaps, no doubt thanks to highly sophisticated production techniques but demanding specialist training for personnel, the Japanese doctrine allows for 80% acceptable losses for small craft but wants to bring the crews back home. . 
 

Offline Elouda

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Re: After the Fall - Imperial Japanese Navy
« Reply #12 on: July 13, 2013, 03:24:53 PM »
I notice you used the historic 'C6' designation for the Saiun, but instead chose the Reppu's A7 designation for the Zero instead of its own A6 designation - is this an oversight or intentional?
 

Offline Steve Walmsley (OP)

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Re: After the Fall - Imperial Japanese Navy
« Reply #13 on: July 13, 2013, 03:54:32 PM »
I notice you used the historic 'C6' designation for the Saiun, but instead chose the Reppu's A7 designation for the Zero instead of its own A6 designation - is this an oversight or intentional?

An oversight. I originally intended to advance the numbers from the original but then forgot for the Saiun. I guess I should change the A7 back to A6 because, as you point out, advancing it just means I am using the designation of a different aircraft.

Steve
 

Offline MagusXIX

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Re: After the Fall - Imperial Japanese Navy
« Reply #14 on: July 27, 2013, 11:12:15 PM »
Is it just me, or should the carrier have thicker defenses and stronger, thermal sensors?  I love carriers, but what good are the fighters if the mothership can't spot targets at a decent range, and falls apart this first time someone sneezes at it?