[Spaceships] DS-1 Orbital Battle Station

[Lamech]

Now the death star may not be feasible with GURPS Spaceships, but I give you:

Lamech's Perfectly Reasonable Planter Killer
Many said it would never work. They said it defifed common sense and the laws of physics. But when this weapon was first used against a planet the results spoke for themselves. The planet was vaporized in under a minute of bombardment. Note this weapon is not effective through cloud cover.

SM+17 (Unstreamlined)
Systems:
Front:
5 systems of SM+7 tertiary batteries, turret mount improved rapid fire UV Lasers. (3,000,000 turrets each, 300KJ, RoF 20, 1d6+2(2) dDamage.)
1 armor of choice
1 control room
Middle:
3 SM+18 major batteries, turret mounted graser (3 turrets total, 10TJ, RoF 1, 4d*100(10) dDamage
2 systems of SM+7 tertiary batteries, turret mount improved rapid fire UV Lasers. (3,000,000 turrets each, 300KJ, RoF 20, 1d6+2(2) dDamage.)
1 armor of choice
Rear:
3 antimatter reactors
1 habitat
1 armor
2 engines of choice.

This weapon of destruction pulls up into low orbit above a planet, and unless a storm of hundreds of millions of lasers. The result inflicts over 2 billion in raw damage. Assuming a planet is a spaceship made of nothing but stone armor the planet loses all of its ablative DR and is then reduced to well below -10*HP vaporizing it. It also has three larger weapons to deal with armored spaceships.