Axel Kane, go into my documents/my games/galciv2/ships.
In the ships folder, there are a number of files for the ships you've customized (typically XML files but listed under the names you gave when you made them with the shipbuilder).
This is what you need to zip up and send to either the library or direct. I'd love to use those ships you've built, so if you want to send them to me direct, please do so to mc1csmo@aol.com. Otherwise, I'll hope to see them in the library (although they take SO long to update there, I hope you don't mind sending direct).
Still awaiting Ken's galactica series, loving those too
Thanks!!