An idea: If the model was solidly attached to the base, the cover then solidly attached to the base - so it is one piece. Then a case that holds the whole thing - mabye a study wooden crate would do - with thick foam peices to surround the display case on all six sides. A nice injection molded case would be nice - perhaps the Navy would willing to provide it? - since you will be giving them the model? I could see driving it there in a van yourself too - rather than letting people who don't appreciate what it is - handle it.