Yes, this is the same ship on both pics. This is a carrier, both terran carriers in SG are blocky to maximize fighter and bomber loadout. Basicly it's a flying hangar with torpedo launchers and tactical plasma cannons. I needed something similar to GTCa Galaxy, but more detailed and just better.
And it has a lot of details, base model has +15k polys [after triangulation] but they're not visible in the weak lightning of my Freepsace [I'm prefering dark space].