soap made with coconut oil, formerly used on shipboard because of its solubility in salt water

An alloy of lead, antimony, and mercury, made for sheathing ships.

(chemistry, now historical) Hydrochloric acid.

three geographical miles

(UK, historical) A store where old canvas, ropes, etc., are bought and sold; a junk shop.

interest at any rate agreed on for money lent upon respondentia and bottomry bonds

(nautical, slang) An awkward, lubberly person. / (nautical, slang) One of a mythical body of marine cavalry, for whom wild flights of imagination are best reserved.

plural of marine aerodrome

(nautical, maritime) a type of airport or airfield where the landing and take-off area is a body of water, such as a lake, river, or the sea.

plural of mariner's compass