Something along these lines? Probably would want higher tech, since I'm still only in ion engines, GC ROF1, and jump efficiency 4 in the game I'm in.
Oregon class Cruiser 1,514,500 tons 6540 Crew 95452 BP TCS 30290 TH 12000 EM 0
396 km/s JR 2-25(C) Armour 10-1174 Shields 0-0 Sensors 1/1/0/0 Damage Control Rating 1 PPV 0
MSP 39 Max Repair 62797 MSP
Intended Deployment Time: 3 months Spare Berths 1
Habitation Capacity 50,000
Terraformer: 20 module(s) producing 0.03 atm per annum
JC1500K Commercial Jump Drive Max Ship Size 1500000 tons Distance 25k km Squadron Size 2
300 EP Commercial Ion Drive MK2 (40) Power 300 Fuel Use 7.07% Signature 300 Exp 5%
Fuel Capacity 12,500,000 Litres Range 21.0 billion km (613 days at full power)
CIWS-80 (150x2) Range 1000 km TS: 8000 km/s ROF 5 Base 50% To Hit
This design is classed as a Commercial Vessel for maintenance purposes
This design is classed as an Orbital Habitat for construction purposes
Kinda slow to get there and would be pretty slow at sucking out someones atmosphere.
Warrior class Cruiser 4,500,000 tons 17940 Crew 370010.9 BP TCS 90000 TH 7500 EM 0
694 km/s JR 2-25(C) Armour 75-2428 Shields 0-0 Sensors 1/1/0/0 Damage Control Rating 1 PPV 0
MSP 51 Max Repair 62797 MSP
Intended Deployment Time: 3 months Spare Berths 0
Troop Capacity: 100 Battalions Habitation Capacity 50,000
Terraformer: 100 module(s) producing 0.35 atm per annum
JC4500K Commercial Jump Drive Max Ship Size 4500000 tons Distance 25k km Squadron Size 2
625 EP Commercial Magnetic Fusion Drive (100) Power 625 Fuel Use 2.65% Signature 75 Exp 5%
Fuel Capacity 105,685,000 Litres Range 159.4 billion km (2658 days at full power)
CIWS-320 (300x10) Range 1000 km TS: 32000 km/s ROF 5 Base 50% To Hit
This design is classed as a Commercial Vessel for maintenance purposes
This design is classed as an Orbital Habitat for construction purposes
Now thats what I'm talking about. Turn out a dozen of these (over 100 years eating up all the resources you have x5), eat someones atmosphere in a few months. Better yet, you could fly it over and pour a some hazardous gasses (hydrogen sulfide, and such) into their atmosphere, crank the colony cost through the roof and also watch as they die slowly.
Another 1 that comes up would be a huge mining ship, fly it over. Eat all the trans-newtonian minerals on their planet and fly off leaving them trapped on just 1 planet. Fly in, give them a mass driver. Every few years you send them a packet of minerals to mess with. Watch as they futilely try to expand.
Classic