The version in the DT has 12 verses (or six couplets, whichever you prefer), all "nautical". There's probably a thousand more out there that have no relation to things nautical beyond being stuck into this particular song. The song is amazingly adaptable to whatever happens to be in today's news - which is probably the reason it's so well liked by folkies and pub singers (and listeners). For example,:
"Put him in a chorus in West Hartford" or
"Send him back to school at Conard High",
coupled (sorry gang, no hidden meaning intended) with "I wouldn't do that with a drunken sailor". The phrase "banned in Boston" has been a great advertizing gimmick for decades, or more. Maybe this little episode could be used in pubs for a lyric contest - might even spawn a "rebirth" of the song. Too bad there's no "Hit Parade" anymore.