Minimum Size

The minimum tonnage for a TL10 GURPS: Traveller: Interstellar Wars warship to mount a spinal weapon is 20,000 dTon.

I was reading up on the 4th Interstellar War and found that Diikagkarunii Sharik Yangila used attack cruisers based around spinal mounts, like the Terrans had pioneered.

Because ISW doesn't give me stats for these, or the Terran equivalent, I had to make my own.

Ukimkhim Class Imperial 20,000-dton Attack Cruiser

Tech Level: 10.

Hull: 20,000-dton Cylinder Streamlined hull, dDR 240 armor, Stealth.
Systems: 3,400 Manuever Drive, 600 Jump Drive, 4,000 Fuel Tanks, 100 Fuel Processor (320 dtons/hour), 2 Command Bridge, Model-6 Sensors (Scan 21), Model-4 Sensors (Scan 19), Light Spinal Particle Cannon, 2 Light Missile Arrays, 12 Light Turrets, 24 Missile Racks, 12 Sandcasters, 7 Heavy Turrets, 14 Plasma Guns, Hanger Bay (200 dton capacity), 5,906 Fusion Power, 65 Bunkrooms, 49 Staterooms, 5 Workshops, 10 Sickbays, 1,299 Cargo.

Statistics: EMass 107,023.5 tons, LMass 118,088.5 tons, Cost M$30,989.61 (Fitted Out), SM +12, ASig +6, dHP 250, Life Support 748, sAccel 5.76 G, Jump-2 (2-parsec range), Top Air Speed 740 mph.

Crew: Command Section (13 officers, 1 petty officer, 1 crewman), Engineering Section (49 officers, 98 petty officers, 349 crewmen), Gunnery Section (6 officers, 19 petty officers, 38 crewmen), Flight Section (15 officers, 5 petty officers, 10 crewmen), Ship's Troops (3 officers, 18 petty officers, 48 crewmen), Maintenance Section (3 officers, 5 petty officers, 17 crewmen), Life Support Section (1 officer, 1 petty officer, 6 crewmen), Medical Section (3 officers, 5 petty officers, 9 crewmen), General Services Section (2 officers, 3 petty officers, 12 crewman).  Total 95 officers, 156 petty officers, 490 crewmen.

Passengers: None.

The Terran Confederation's Indomitable Class Battleship, by comparison, is 30,000 dton, slower sAccel, better armored and because she's TL11... has a spinal meson gun.  The mythical Terran gashukubi!  Plus she mounts the game changing Jump-3.