I don't know if these has been discussed; at least I didn't see it...
Whether 'port holes' are the small round windows in the hull, or holes along the deck's railing for tying up the ship seems to be the cause of a lot of debate. Does any one have a definitive answer?

Hyla, can you tie a Fisherman's Bend?

BTW, My favourite nautical term is the 'poop deck' (a small deck at the stern) from which the captain might yell 'Furl the sails and batten down the hatches, me matey!'