Since man has colonised some of the galaxy, they have discovered many alien races. Considered hostile, they instantly declare war. However, there is another threat lurking, a race of synthetics that only exists to destroy all life, but not even they are the true threat, for another more ancient, darker race is returning.
The most basic of ships in the Sol Defence Fleet. With four Ion Cannons, this ship placed effectively in a battle group can challenge ships even twice its size. (Orginal Sins Only)
Don't use Sketchup, just don't. It's a really bad tool to get started on 3D with.
unfortunatly, its the only 3d program i know how to properly use