I have designed a user ship during a single map. i have done two versions of this ship, the first only with the hull and the extras, and the second version with all the stuff, sensors, engines etc. so to build the first version no techs are required, except for the scale building for the hulls. i have named the two versions with different names, and saved them. now i'm playing the campaign, and i don't see the first version of the ship, while having the hull techs to build it. where's the problem?
have i to work with .shipclass file, or to set something in the game menu, or whatelse?

thanks