Is spaceship armor useless?

[ericbsmith]

Originally Posted by Xplo

Spaceships 68 shows 2cm guns doing 6dx5 - and as with everything in Spaceships, that's decade-scale. Electromagnetic guns triple this (at least) due to their minimum velocity. If the damage is wrong, show me.

Download a more recent PDF. Or check the errata. Note that with the printed GURPS Spaceships book both the Book Errata and PDF Errata applies, and there are quite a few major changes made in the PDF errata not the least of which is the conventional warhead damage because it wasn't actually in decade scale in the original printing and PDF.