Why so hard to believe - Captain Nemo did the deed years and years ago in the first Nautilus. Also, I think they still call them "sailors" in the navy even if they are on a guided missile frigate? I know what we can do - we will let former President Jimmy Carter settle it. We get a professional lady to sashay up to him in such a manner as to make him "lust in his heart" and say to him "Hi there SAILOR". Now probably I would guess he would then take the time to explain that he was a "Nuclear Sub-Mariner", not a Sailor.