Ran across this site while doing research for the BSG post:
Welcome to the Starship Schematics Database. It’s dedicated to the sole purpose of archiving every single starship design ever conceived in the Star Trek, Battlestar Galactica, Babylon 5, and Space Battleship Yamato (A.K.A. Star Blazers in the USA) Universes, both official and unofficial, interesting and mediocre.
A virtual smorgasbord of information for all the hardware obsessed geeks out there.