Over boats

Right. She's off the boat. Huzzah!

So, I'm sure everyone's dying to know the result of my challenge to define some nautical terms.

beakhead
colloquially known as "the heads". It's a small platform at the fore part of the upper deck, where the crew go to do their business over the water.

knightheads
the two timbers rising from the keel which support the inner end of the bowsprit. They were sometimes decorated with a carving of a head.

scantlings
a measurement of prescribed size. it's the collective dimensions of the various bits of the ship.

tumblehome
the narrowing of a ship's hull with greater distance above the water-line, ie. the beam at the uppermost deck is less than the maximum beam of the ship.

bulwark
the woodwork running round the ship above the level of the deck.