Interstellar Wars Ships Using Spaceships

[JMason]

So I decided to give a go at translating the ships from Interstellar Wars to the GURPS Spaceships system. I’m using most of PK’s house rules, except I’ve decided just 1 tank per parsec.

Here are the first couple (I wanted to get some fighters done so I can try out the combat system).


Imperial Missile Fighter $10M

This ship is pretty much armor/engines/launchers. With 33 dDR and 6G acceleration, something had to give in order to make this work with Spaceships design system.

I decided to allow engines in non-rear sections, putting 2 in the center and 2 in the rear. The ship is suppose to be a flattened sphere anyway, so why not? Also, I dropped armor down to 28 dDR (using Nanocomposite) and speed to 4G.

Front Hull
[1-4]	Armor, Nanocomposite (dDR 28) 2M
[5!]	Weapons, Med. Battery (20 cm Fixed Launcher x2, 1.5T) 400k
[6]	Control Room 200k

Central Hull
[1-4]	Armor, Nanocomposite (dDR 28) 2M
[5-6!!]	Reactionless Engines (2G) 0.2M
[core]	Fusion Reactor (2 power) 1M

Rear Hull
[1-4]	Armor, Nanocomposite (dDR 28) 2M
[5-6!!]	Reactionless Engines (2G) 0.2M
[core]	Fusion Reactor (2 power) 1M

Features: Stealth Hull (0.5), Winged (0.5)

Piloting/TL10 (High-Performance Spacecraft)
TL    dST/HP    HT    Hnd/SR    Move    SM    LWt         dDR    Occ
10      30     12      0/4     4G/c    +6    100 tons    28     2

Terran Light Fighter $7M

This is a little more reasonable. I used cheaper armor, as this seems likely for the Terran ships (Nanocomposite seems a bit much anyway). Speed is more important to get in/out of laser range, so not the issue was to get enough power to the engines.

Front Hull
[1-3]	Armor, Advanced Metallic Laminate (dDR 15) 0.6M
[4!]	Weapons, Med. Battery (Fixed Laser x2, 1.5T) 400k
[5]	Control Room 200k
[6]	Fusion Reactor (2 power) 1M

Central Hull
[1-3]	Armor, Advanced Metallic Laminate (dDR 15) 0.6M
[4-6!!!] Reactionless Engines (3G) 0.3M
[core]	Fusion Reactor (2 power) 1M

Rear Hull
[1-3]	Armor, Advanced Metallic Laminate (dDR 15) 0.6M
[4-6!!!] Reactionless Engines (3G) 0.3M
[core]	Fusion Reactor (2 power) 1M

Features: Stealth Hull (0.5), Winged (0.5)

Piloting/TL10 (High-Performance Spacecraft)
TL    dST/HP    HT    Hnd/SR    Move    SM    LWt         dDR    Occ
10      30     12      0/4     6G/c    +6    100 tons    15     2

That's about it for now. Tell me what y'all think.

[JMason]

And a couple more.

Standard Lifeboat $3.4M

The lifeboat has the opposite problem of the fighters. There is just not much need for all 20 systems. I decided to just scale up everything so it can hold more persons and cargo. I’m thinking though that it might work better to scale this down to a SM+5 ship, but then I’ll have to allow for half cabin habitats to fit the low births.

I treat Low Berths as stasis pods, but they can house 2 persons (4 in an emergency) per unit.

Front Hull
[1-3]	Armor, Advanced Metallic Laminate (dDR 15) 0.6M
[4-6]	Habitat (12 Low Berths) 400k
[core]	Control Room 200k

Central Hull
[1-3]	Armor, Advanced Metallic Laminate (dDR 15) 0.6M
[4-6]	Habitat (12 Low Berths) 400k
[core]	Fusion Reactor (2 power) 1M

Rear Hull
[1-3]	Armor, Advanced Metallic Laminate (dDR 15) 0.6M
[4-6]	15 tons
[5-6!!]	Reactionless Engines (2G) 0.2M

Features: Winged (0.5)

Piloting/TL10 (High-Performance Spacecraft)
TL	dST/HP	HT	Hnd/SR	Move	SM	LWt	dDR	Occ
10	30	12	0/4	2G / c	+6	100T	15	2

Can hold 48 passengers in low births.

Standard Assault Craft $13.5M

Not too much to say about this one. Most of the systems converted over nicely.

Front Hull
[1-2]	Armor, Nanocomposite (dDR 14) 1M
[3!]	Weapons, Major Battery 600k
[4!]	Weapons, Major Battery 600k
[5-6]	10 tons
[core]	Control Room 200k

Central Hull
[1-2]	Armor, Nanocomposite (dDR 14) 1M
[3!]	Weapons, Major Battery (Turret) 600k
[4-6]	Fusion Reactor (6 power) 3M
[core]	Fusion Reactor (2 power) 1M

Rear Hull
[1-2]	Armor, Nanocomposite (dDR 14) 1M
[3-6!!!!]	Reactionless Engines (4G) 4M

Features: Winged (0.5)

Piloting/TL10 (High-Performance Spacecraft)
TL	dST/HP	HT	Hnd/SR	Move	SM	LWt	dDR	Occ
10	30	12	0/4	4G / c	+6	100T	14	2

[JMason]

Standard Ship’s Boat $ 9.3M

Front Hull
[1-2]	Armor, Metallic Laminate (dDR 10) 300k
[3-6]	Cargo Hold, 60T
[core]	Control Room 600k

Central Hull
[1-2]	Armor, Metallic Laminate (dDR 10) 300k
[3-5]	Passenger Seating (60 seats) 300k
[6]	Cargo Hold, 15T
[core]	Fusion Reactor (2 power) 3M

Rear Hull
[1-2]	Armor, Metallic Laminate (dDR 10) 300k
[3-4]	Cargo Hold, 30T
[5-6!!]	Reactionless Engines (2G) 4M

Features: Winged (0.5)

Piloting/TL10 (High-Performance Spacecraft)
TL	dST/HP	HT	Hnd/SR	Move	SM	LWt	dDR	Occ
10	50	12	-1/5	2G / c	+7	300T	10	63

Cargo Shuttle Variant
Swap out Passenger Seating for 45T more cargo. -300k

Passenger Shuttle Variant
Reduce Cargo to just 15T and make all the rest Passenger Seating. +600k
Just upgrade the armor type to make this an assault lander.

Fuel Skimmer Variant
Drop all passenger and cargo for 10 Fuel Tanks +700k

Mobile Base
Only one Passenger Seating, add 3 Habitats for 1 Lab, 3 Bunkrooms, and 5T steerage) +700k

[Fred Brackin]

Your "Life Boat" is the size of the Space Shuttle and your "Ship's Boat" is as big as a 747. I know Traveller is traditionally goofy that way butt you might be over doing it.

Make your Life Boat SM+5 (or even +4) and your bunkrooms become oversized systems. Then put in multiple layers of much cheaper armor to take up space if you need to.

[JMason]

Originally Posted by Fred Brackin

Your "Life Boat" is the size of the Space Shuttle and your "Ship's Boat" is as big as a 747. I know Traveller is traditionally goofy that way butt you might be over doing it.

Make your Life Boat SM+5 (or even +4) and your bunkrooms become oversized systems. Then put in multiple layers of much cheaper armor to take up space if you need to.

I started creating a smaller life boat, but then changed b/c these were the Size Modifiers that were listed in T:IW.

Are there rules for SM+4 ships? Spaceships 1 only covers down to +5.

[Fred Brackin]

Originally Posted by JMason

I started creating a smaller life boat, but then changed b/c these were the Size Modifiers that were listed in T:IW.

Are there rules for SM+4 ships? Spaceships 1 only covers down to +5.

Spaceships 4 I believe. The progressions downward are quite logical and the oversized systems rule is in Spaceships 1.

By default Traveler ships are simply huge. By modern standards my 1000 square foot house is small but in Traveller it's 20 dTons and would be a hull for something like a fighter. The Suleiman-class scout Ship is of course 5x the size of my house.