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JMason

04-19-2017 10:11 PM

Interstellar Wars Ships Using Spaceships

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.

Code:

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.

Code:

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

04-21-2017 06:58 PM

Re: Interstellar Wars Ships Using Spaceships

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.

Code:

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.

Code:

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

04-24-2017 08:37 PM

Re: Interstellar Wars Ships Using Spaceships

Standard Ship’s Boat $ 9.3M

Code:

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

04-25-2017 10:02 AM

Re: Interstellar Wars Ships Using Spaceships

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

04-25-2017 10:33 AM

Re: Interstellar Wars Ships Using Spaceships

Quote:

Originally Posted by Fred Brackin (Post 2094610)

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

04-25-2017 12:09 PM

Re: Interstellar Wars Ships Using Spaceships

Quote:

Originally Posted by JMason (Post 2094618)

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.

JMason

04-25-2017 09:43 PM

Re: Interstellar Wars Ships Using Spaceships

Alright, I scaled down the Lifeboat to SM+5. I started to do 4, but that felt a bit too small. This version actually feels like a better fit for the the stats in TIW

Standard Lifeboat (take 2)
$1.26M (8.2M)

Code:

Front Hull

[1-3]        Armor, Advanced Metallic Laminate (dDR 9) 180k

[4-5]        Control Room 120k

[6]        Cargo 1.5T



Central Hull

[1-3]        Armor, Advanced Metallic Laminate (dDR 9) 180k

[4]        Cargo 1.5T

[5-6]        Habitat (4 Low births) 60k

[core]        Habitat (2 Low births) 30k



Rear Hull

[1-3]        Armor, Advanced Metallic Laminate (dDR 9) 180k

[5-6!!]        Reactionless Engines (2G) 60k

[core]        Fusion Reactor (2 power) 300k



Features: Winged (150k)



Piloting/TL10 (High-Performance Spacecraft)

TL        dST/HP        HT        Hnd/SR        Move        SM        LWt        dDR        Occ

10        20        12        0/4        2G / c        +5        30T        9        2



Can hold 24 passengers in low births.

JMason

05-03-2017 08:22 PM

Re: Interstellar Wars Ships Using Spaceships

So I reduced the ship's boat down to SM 6.

Standard Ship’s Boat (take 2)
$ 2.74M (17M)

Code:

Front Hull

[1]        Armor, Adv. Metallic Laminate (dDR 5) 200k

[2-5]        Passenger Seating (24) 120k

[6]        Cargo 5 sTons

[core]        Control Room 200k



Central Hull

[1]        Armor, Adv. Metallic Laminate (dDR 5) 200k

[2-5]        Passenger Seating (24) 120k

[6]        Cargo 5 sTons

[core]        Fusion Reactor (2 power) 1M



Rear Hull

[1]        Armor, Adv. Metallic Laminate (dDR 5) 200k

[3-4]        Cargo Hold 10 sTons

[5-6!!]        Reactionless Engines (2G) 200k



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        5        62



Cargo Shuttle Variant

Swap out Passenger Seating for 50 tons more cargo. -300k



Passenger Shuttle Variant

Reduce Cargo to just 5T and make all the rest Passenger Seating. +90k

Instead of adding seats, change systems to armor for an assault lander.



Fuel Skimmer Variant

Drop all passenger and cargo for 8 Fuel Tanks +240k



Mobile Base

Only 2 Passenger Seating, add 2 Habitats for 1 Lab, 3 Bunk Rooms, all the rest is cargo +420k

JMason

05-05-2017 08:28 PM

Re: Interstellar Wars Ships Using Spaceships

Alright, I'm still working on these when I have some time. I realize that all of these should probably have Gravitic Compensators, so I'll need to fix that... I'm sure there are other things I've missed.

Standard Interplanetary Shuttle
$ 12.5M (21M)

Code:

Front Hull

[1-2]        Armor, Adv. Metallic Laminate (dDR 14) 1.2M

[3-6]        Habitat (8 Cabins) 1.2M

[core]        Control Room 600k



Central Hull

[1-2]        Armor, Adv. Metallic Laminate (dDR 14) 1.2M

[3]        Medium Battery (2 hardpoints, 5t) 1.5M

[4-6]        Habitat (6 Cabins) 0.9M

[core]        Fusion Reactor (2 power) 1M



Rear Hull

[1-2]        Armor, Adv. Metallic Laminate (dDR 14) 1.2M

[3-5]        Cargo Hold 45T

[6!]        Reactionless Engines (1G) 200k



Features: Artificial Gravity 1M, Gravitic Compensators 1M, Winged (1.5M)



Piloting/TL10 (High-Performance Spacecraft)

TL        dST/HP        HT        Hnd/SR        Move        SM        LWt        dDR        Occ

10        50        12        -1/5        1G / c        +7        300t        14        3

Crockett-Class Picket Ship

Another ship with high speed and armor! I reduced armor down to 30 (using Nanocomposite), and speed down to 3G. There are fewer control stations than I’d like. Based on the TIW version, there should probably be a second control room to handle the 10 persons that are suppose to be on this ship.

$108.2M (140M)

Code:

Front Hull

[1-2]        Armor, Nanocomposite (dDR 30) 10M

[3]        Tactical Array 10M

[4]        Habitat (6 cabins) 1M

[5-6]        Fuel Tanks 600K

[core]        Control Room 2M



Central Hull

[1-2]        Armor, Nanocomposite (dDR 30) 10M

[3!]        Medium Battery (Beam, Launcher, Sandcaster) 6M

[4!]        Medium Battery (Beam, Launcher, Sandcaster) 6M

[5-6]        Fusion Reactor (4 power) 20M

[core!]        Jump-2 Drive 20M



Rear Hull

[1-2]        Armor, Nanocomposite (dDR 30) 10M

[3]        Engine Room 300K

[3-6!!!]        Reactionless Engines (3G) 3M



Features: Artificial Gravity 1M, Gravitic Compensators 1M, Standard fuel processor 300K, Winged (5M), Stealth (2M)



Piloting/TL10 (High-Performance Spacecraft)

TL        dST/HP        HT        Hnd/SR        Move        SM        LWt        dDR        Occ

10        70        13        -1/5        4G / c        +8        1000t        30        3

The Iiken-Class Scout/Courier is suppose to have less armor, speed, and weapons than the Crockett. But since I had to reduce the Crockett down, there isn’t much room for the minor granularity between these two ships. Basically, you can just remove 2 cabins to add the cargo space for the air/raft.

JMason

05-06-2017 08:02 AM

Re: Interstellar Wars Ships Using Spaceships

With so many ships rated at 6G ... and all ships having some armor, I'm starting to think that there needs to be a better performing engine.

I'm already using PK's tweak to have standard Reactionless Engines perform like the "hot" versions (1G instead of 0.5). Perhaps there should be a 2G upgrade. This would allow some of those 6G with only 3 systems (5 counting the 2 Power Plants needed to power them).

JMason

05-08-2017 06:57 PM

Re: Interstellar Wars Ships Using Spaceships

Haven't had as much time this week, but here is the Phidippides:

Phidippides-class Fast Courier
$50.8M (150M)

Code:

Front Hull

[1]        Armor, Adv. Metallic Laminate (dDR 10) 2M

[2]        Cargo 50T

[3-4]        Habitat (10 Cabins; 10t steerage) 2M

[5-6]        Fuel Tanks 600K

[core]        Control Room (C8; Sensors-7; 4 Stations) 2M



Central Hull

[1]        Armor, Adv. Metallic Laminate (dDR 10) 2M

[2!]        Med. Battery (3 hardpoints)

[3-4]        Fusion Reactor (4 power) 6M

[5-6]        Fuel Tanks 600K



Rear Hull

[1]        Armor, Adv. Metallic Laminate (dDR 10) 2M

[2]        Engine Room 300K

[3-6!!!]        Reactionless Engines (4G) 4M

[core!]        Jump-2 Drive 20M



Features: Artificial Gravity 1M, Gravitic Compensators 1M, Standard fuel processor 300K, Stealth 2M, Winged 5M



Piloting/TL10 (High-Performance Spacecraft)

TL        dST/HP        HT        Hnd/SR        Move        SM        LWt        dDR

10        50        13        -1/5        4G / c        +8        1000t        10

JMason

05-09-2017 07:11 PM

Re: Interstellar Wars Ships Using Spaceships

OK, this has been a long time coming. I actually started with this ship, but have rebuilt it about 10 times (using different assumptions and rules). This is the ship that my players will start with, so I wanted to make sure it worked well.

I'm not sure I've accomplished that. The biggest concern is that it needs a lot of ... stuff, and all that stuff cuts into the cargo space.

Hero-class Private Merchant
$41.2M (68M)

Code:

Front Hull

[1]        Armor, Adv. Metallic Laminate (dDR 10) 2M

[2]        Habitat (4 Cabins; 4 Low Births, 1 Sickbay) 1M

[3-6]        Cargo 200T

[core]        Control Room (C8; Sensors-7; 4 Stations) 2M



Central Hull

[1]        Armor, Adv. Metallic Laminate (dDR 10) 2M

[2!]        Med. Battery (45T cargo)

[3]        Habitat (6 Cabins) 1M

[4-6]        Cargo 150T



Rear Hull

[1]        Armor, Adv. Metallic Laminate (dDR 10) 2M

[2-3]        Fuel Tanks 900K

[4]        Engine Room 300K

[5]        Jump-2 Drive 20M

[6!]        Reactionless Engines (1G) 1M

[core]        Fusion Reactor (2 power) 3M



Features: Artificial Gravity 1M, Gravitic Compensators 1M



Piloting/TL10 (High-Performance Spacecraft)

TL        dST/HP        HT        Hnd/SR        Move        SM        LWt        dDR        Occ

10        50        13        -1/5        2G / c        +8        1000t        10        28

So, this (final?) build has 395 tons of cargo. As I stated before, I went with 1 Fuel Tank system per jump. Using PK's rule would have reduced the cargo by another 50 tons.

This comes pretty close to matting the stats in GURPS Traveller Interstellar Wars. There are some places where the text, stats, and deckplan don't match. So, I just tried to match the systems listed in the stat block.

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