We once played the crew of a British submarine that had made it's way up the Canal system to Brussels. We paid a visit to their boat afterwards and the ladies all remarked how gallant the crew were in helping them out of the bottom of the conning tower as they stepped out. We didn't tell them that the crew drew lots for the job of sitting at the bottom as they descended.
It was always an unwritten rule in the Royal Navy that officers should invariably precede ladies down ladders, and follow them up ladders - an early exercise in health and safety, I believe!
Jack
PS Knock! Knock! Who's there? Nicholas! Nicholas who? Nicholas girls should never go down in submarines ......