On the right is and image of one such cruiser. At least 4 miles across it was fully equipped and crewed. in the end it was destroyed for fear it may contain deadly bacteria etc. it wa slater learned the crew was killed by itself in an attempt to destroy and entity which was taking over, they failed.

On the left below is a fighter encountered on a world. It's 15-20 meters in size, remote controlled, and uses gravitational propulsion systems. It is confirmed armed with beam weapons.