Wouldn't they have a problem with a Coast Guard (technically military) over there?
I remember when I was cruising the Dry Tortugas during spring break with my buddy who was in the Navy. He said that if, for some strange reason, we ended up in Cuba, that he would have to dump all his ID overboard.
He could have been blowing smoke up my butt tho.
Perhaps it was more for his saftey than our rules... heck we have a base in cuba...