Need a little help with design

[borisoff (OP)]

I'm trying to design my first military vessel, and I wonder if this thing is going to fly and shoot properly.  Don't mind the engines and speed, just focus on weapon systems, fire control, active sensors and maintenance.  After a few years of resarch and improvement, I designed missiles that go 20kkm/s, have barely 50% acc at 5km/s of target's speed and are size 7 (MSP).  I don't know if I did right thing designing missile launcher of size 7 to match the missile (not sure if it checks for MSP or HS of the missile)

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Urgent Fury class Destroyer    3 000 tons     108 Crew     751.6 BP      TCS 60  TH 60  EM 0
1000 km/s     Armour 1-18     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 1     PPV 7
Maint Life 1.5 Years     MSP 157    AFR 72%    IFR 1%    1YR 78    5YR 1174    Max Repair 273 MSP
Intended Deployment Time: 12 months    Spare Berths 1   
Magazine 7   

60 EP Ion Drive (1)    Power 60    Fuel Use 85.5%    Signature 60    Exp 10%
Fuel Capacity 250 000 Litres    Range 17.5 billion km   (203 days at full power)

Size 7 Missile Launcher (1)    Missile Size 7    Rate of Fire 70
Missile Fire Control FC113-R100 (1)     Range 113.4m km    Resolution 100

Active Search Sensor MR0-R1 (1)     GPS 16     Range 960k km    MCR 105k km    Resolution 1
Active Search Sensor MR113-R100 (1)     GPS 18900     Range 113.4m km    Resolution 100
Active Search Sensor MR115-R50 (1)     GPS 13650     Range 115.8m km    Resolution 50

ECCM-1 (1)         ECM 10

This design is classed as a Military Vessel for maintenance purposes
Also: do I have to design/research some kind of missile cargo system to hold more missiles ?

The MR0-R1 sensor is for point defence purposes which i didn't include yet.

[JacenHan]

The launcher and fire control look fine, but you'll need a magazine to store more than one missile. And you'll probably want more than one launcher, 1 missile every 70 seconds won't break through any PD systems without a lot of help.

The MR113-R100 sensor is redundant, the MR115-R50 sensor outranges it and can spot smaller targets. As well, the MR0-R1 won't give you much of chance spot missiles, as anything faster than 21k km/s can fly through it in a single increment (ie: before you can see it). An MCR of about 500k km would be much better.

[Whitecold]

A few points, a missile detection sensor is only useful if you have something to shoot the missile down with. Also you might want to armor your ship, a single layer is really, really thin. Magazines hold reloads for missiles you will want a few, as well as additional launchers. Your ship will end up larger than 3000t, this is small for a full ship. Can you post the full stats of the missile? If you add them as default ordnance in the appropriate tab, it will show up in the ship overview

[Erik L]

What's the designated role of the ship? Is it to shoot ships or shoot missiles down?

If it's shooting ships, then drop the res 1 sensor.
If it's shooting missiles, drop the other 2 and beef up the range on the Res 1.

More magazine space = more goodness.

Aurora lends itself to creating ships that are single or dual role (at best). Multi-role ships end up taking tonnage away from all roles to account for the extra tasks the ship is designed to do. I call this the Navy vs. Star Trek build philosophy. Star Trek ships can do it all. Navy ships are specialized. Single role ships can (usually) out-class an equal tonnage of multi-role ships.

You might sit down and work out your fleet doctrine. How many ships in a task group? What percentage of them are escorts and what percentage are mission? Or do you have dedicated escort TGs and mission TGs? What is their range? And what is the maintenance life? And the deployment time?

[borisoff (OP)]

Ok so I modified the model a bit according to your hints:

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Urgent Fury class Destroyer    6 450 tons     182 Crew     1041.6 BP      TCS 129  TH 360  EM 0
2790 km/s     Armour 4-30     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 2     PPV 28
Maint Life 1.48 Years     MSP 202    AFR 166%    IFR 2.3%    1YR 103    5YR 1547    Max Repair 273 MSP
Intended Deployment Time: 12 months    Spare Berths 1   
Magazine 58   

60 EP Ion Drive mk II (6)    Power 60    Fuel Use 66.5%    Signature 60    Exp 10%
Fuel Capacity 750 000 Litres    Range 31.5 billion km   (130 days at full power)

Size 7 Missile Launcher (4)    Missile Size 7    Rate of Fire 70
Missile Fire Control FC113-R100 (1)     Range 113.4m km    Resolution 100

Active Search Sensor MR115-R50 (1)     GPS 13650     Range 115.8m km    Resolution 50

ECCM-1 (1)         ECM 10

This design is classed as a Military Vessel for maintenance purposes
IMHO now it's a bit too heavy, slow and I don't know if the fire control will match the search sensor ? (diffirent resolutions).     I may add some engines, but I want to stay at over 100 days of fuel reserve, and it would need some more fuel capacity, which will rise the weight too much.   

My missile design (I don't know how to include this in ship's design like Whitecold suggested):

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Missile Size: 7 MSP  (0.35 HS)     Warhead: 6    Armour: 0     Manoeuvre Rating: 15
Speed: 20600 km/s    Engine Endurance: 93 minutes   Range: 114.9m km
Cost Per Missile: 3.94
Chance to Hit: 1k km/s 309%   3k km/s 90%   5k km/s 61.8%   10k km/s 30.9%
Materials Required:    1.5x Tritanium   2.44x Gallicite   Fuel x3750
Also my magazine size has increased with more launchers, is there any other way to increase it?

EDIT: More magazine and maintenance

[Whitecold]

6 Warhead seems a bit little for a 7 MSP missile. For adding missiles, there is a tab after the design tab where you can select your ordnance.
Still, your design lacks magazines, so those four shots are all you have at the moment. Magazines need to be designed, in the design window under magazines.
Your maintenance is now really low with half a year, it should be at least higher than deployment time.

[borisoff (OP)]

6 Warhead seems a bit little for a 7 MSP missile.   For adding missiles, there is a tab after the design tab where you can select your ordnance.   
Still, your design lacks magazines, so those four shots are all you have at the moment.   Magazines need to be designed, in the design window under magazines. 
Your maintenance is now really low with half a year, it should be at least higher than deployment time.   

I will need to sacrifice the range or chance to hit for increased warhead. 

example of wh 8 missile with less cth:

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Missile Size: 7 MSP  (0.35 HS)     Warhead: 8    Armour: 0     Manoeuvre Rating: 12
Speed: 20600 km/s    Engine Endurance: 93 minutes   Range: 114.9m km
Cost Per Missile: 4.12
Chance to Hit: 1k km/s 247.2%   3k km/s 72%   5k km/s 49.4%   10k km/s 24.7%
Materials Required:    2x Tritanium   2.12x Gallicite   Fuel x3750
or less range:

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Missile Size: 7 MSP  (0.35 HS)     Warhead: 8    Armour: 0     Manoeuvre Rating: 15
Speed: 20600 km/s    Engine Endurance: 62 minutes   Range: 76.6m km
Cost Per Missile: 4.44
Chance to Hit: 1k km/s 309%   3k km/s 90%   5k km/s 61.8%   10k km/s 30.9%
Materials Required:    2x Tritanium   2.44x Gallicite   Fuel x2500
OR just increase the MSP which isn't smart I guess.

[alex_brunius]

Also my magazine size has increased with more launchers, is there any other way to increase it?

The magazine in your early designs is only the actual missiles that fit in the launch tubes.

( 1 size 7 launcher = 7 magazine )
( 4 size 7 launcher = 28 magazine ).

So your current total magazine of 58 can only hold 8 missiles (4 in the tubes) or a single reload.

When you go into the ordnance tab of the design and assign missiles this will become more clear.

[borisoff (OP)]

Here is my upgraded, probably working design:

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Urgent Fury class Cruiser    7 750 tons     204 Crew     1195.3 BP      TCS 155  TH 360  EM 0
2322 km/s     Armour 4-34     Shields 0-0     Sensors 1/1/0/0     Damage Control Rating 3     PPV 28
Maint Life 2.02 Years     MSP 289    AFR 160%    IFR 2.2%    1YR 94    5YR 1413    Max Repair 273 MSP
Intended Deployment Time: 12 months    Spare Berths 1   
Magazine 208   

60 EP Ion Drive mk II (6)    Power 60    Fuel Use 66.5%    Signature 60    Exp 10%
Fuel Capacity 750 000 Litres    Range 26.2 billion km   (130 days at full power)

CIWS-120 (1x6)    Range 1000 km     TS: 12000 km/s     ROF 5       Base 50% To Hit
Size 7 Missile Launcher (4)    Missile Size 7    Rate of Fire 70
Missile Fire Control FC113-R50 (1)     Range 113.6m km    Resolution 50
Size 7 Anti-ship Missile mk II (16)  Speed: 20 600 km/s   End: 92.9m    Range: 114.9m km   WH: 6    Size: 7    TH: 103/61/30
Size 7 Anti-ship Missile SR mk II (12)  Speed: 20 600 km/s   End: 62m    Range: 76.6m km   WH: 8    Size: 7    TH: 103/61/30

Active Search Sensor MR115-R50 (1)     GPS 13650     Range 115.8m km    Resolution 50

ECCM-1 (1)         ECM 10

Missile to hit chances are vs targets moving at 3000 km/s, 5000 km/s and 10,000 km/s

This design is classed as a Military Vessel for maintenance purposes
It is packed with 16 long range missiles and 12 shorter range, more powerful ones.     It will be accompanied with radar, tanker, PD and beam weapon type ships in the future, hopefully smaller than this one.   

I'm still worried about few things: the ship's and missiles range, missile size, speed and chance to hit, launcher's rate of fire, amount of armour, ecm/eccm, the amount of missiles aboard, failure rate.   

EDIT: More engineering space, now MSP covers max repairs, thanks Erik.  Also CIWS and the weight grew to 7750.  The bad thing is it took me about 20 years in game, to get here.   I wonder what NPR ships will look like after this amount of time. 

[Erik L]

If you look, your max repair is 279. Your total supplies are 199. So if the biggest thing on your ship breaks, you cannot fix it.

[Whitecold]

The missile designs seem okay, and 50-100m km is also okay. The details here will only start to matter if you know your opponent.
ROF is less important than salvo density, with 70 seconds you won't defeat active defenses with successive salvos anyway, so if you have reduced size launchers, I'd use them to maximize throw weight. 4 armor is acceptable, for ECM, one of the best available is okay for a ship that size, stacking only gives redundancy.
Personally I don't use CIWS on warships, and instead add PD batteries to the ship or build PD escorts, but that is a matter of personal taste.

[borisoff (OP)]

-snip-

Okay, in next generation I will throw away CIWS for sake of more launchers and/or mount 75%/50% sized launchers.  Probably 75% because 5x reload time is too low IMO.  PD focused ships shall escort these fat mobile launchers in near future.

[Erik L]

Make missile reload tech a priority. This will aid in cycle times.

[MarcAFK]

If you want your ship to have more range consider replacing your 6 power 60 engines with 1 power 360 or 2 power 120 engines, you'll get vastly better efficiency with one engine, however maintenance will be higher with larger engines.

[borisoff (OP)]

@Erik: Level 4 reload rate based launchers are now a priority.      ETA nov 2042 just before the construction of 3 first generation cruisers.     

@Marc: Do you mean changing the power/efficiency modifier to x2 ? It increases fuel consumption like 11 times.