23rd Century Robot Cargo Ship
The Sherman class is from the Animated Star Trek episode "More Tribbles, More Troubles".
screencaps from "More Tribbles, More Troubles"
The 3D Model
The screencaps above, the shot of the USS Antares from "Charlie X", and a very distant shot of the USS Woden from "The Ultimate Computer" were my references. Built using Hexagon, textured using Paintshop Pro, rendered in Poser 7 and Carrara 5.
The download is free. You can do anything you want with it, and I don't require any credit. It has been tested in Poser 7.
I did the best I could, but it's still a learning process for me. If you download this and find that something doesn't work, you can send me an email and tell me what the problem is. Who knows... maybe I know how to fix it. :-)