This is something I was working on a while ago just before I started the battlestar galactica model in the other thread.  It is supposed to be a ship which functions as an aircraft carrier.  It has hangar doors on the front, back, and big ones across the dorsal surface to deploy fighters quickly.  This was modeled in Gmax and rendered with yafray.  The polygon count is somewhere around 50,000 at this point (I've made more progress since).
By the way the sensor bar and geodesic sensor dome on the bridge tower are from JarJar Thomas' Interdictor star destroyer model on scifi3d.com because they look awesome.