![Image](http://img143.imageshack.us/img143/1010/99102660.th.png)
This one is a sort of heavy escort/mini battleship with a small hangar meant for fighter craft, cargo, or whatever fits the mission profile.
![Image](http://img687.imageshack.us/img687/5303/tubeworldsection.th.png)
![Image](http://img269.imageshack.us/img269/852/conqueroru.th.png)
This one is one of the largest ones, its hull is the same length as the one in the above picture. The ring structure is part of a structure around an Earth-sized planet:
![Image](http://img413.imageshack.us/img413/5659/tubeworld.png)
Uploaded with ImageShack.us
![Image](http://img576.imageshack.us/img576/3008/stealthship.th.png)
This one is meant to be a fast stealth-ship for espionage, spec/black ops and all that. Weapons concealed, so no models of the weapons exist at the moment (and probably never will.)
They tend to be rather symmetrical, although most of them do have drawings which I can provide pics of as well. Also, none of these are textured. I simply colored the parts using Inventor's material selector.