StarshipGenerator.com free web app to design your own ships

[publiusr]

This might also be helpful in building a ship's "bones:"

Building better, building beautiful: Novel method allows more architects to design attractive gridshell structures

A researcher from the University of Tokyo and a U.S.-based structural engineer developed a new computational form-finding method that could change how architects and engineers design lightweight and free-form structures covering large spaces. The technique specifically helps create gridshells...

techxplore.com

I could certainly see a ramscoop maw/Doomsday Machine if nothing else.

 

[Mechworks]

This is neato.

if you're taking suggestions, a few more options for hulls and fins and such wouldn't go amiss---at present it would be hard pressed to get a Miranda into that, for example, what with the square rear superstructure and torpedo pod. but it's pretty decent for blocking out basic shapes! I might get some use of it later.