RE: Scratch-built English Galleon 1/36 scale
Fox, the AusBG primarily operates WWI-WWII warships, but the same basic construction, armament, and damage control techniques apply to all combat models. Also, you'll probably find it easier to convince one of them to build another galleon with you than some random Joe Schmoe off the street. My personal preference for ship keel and frames is 3/8 in 5-ply baltic birch plywood, but that is hard to find in sufficiently large plates to cut each frame of a galleon as a solid piece. Don't use balsa, because that is penetrable and you don't want someone shooting through the structural supports in your ship. Do make sure that the sides of your boat are balsa, if you intend to do RC combat.
Oxen, be careful about renting your ship for film and television, because those people like to blow stuff up[:@] I recently watched the "making of" for Pirates of the Caribbean, and look what THEY did to a perfectly good model! By the way, do you have any pictures yet?