Rum diluted with water. In the 1700s the daily ration of rum in the British Navy was diluted with water with the idea of reducing drunkenness. The term groggy was derived from the effects of drinking too much grog.

An old salt I know uses this term in reference to a "tangled mess of lines".

The locker in which the bos'n keeps his deck gear.

To keep close.

The abrupt and large increase in electrical conductivity exhibited by some metals as the temperature approaches absolute zero.

The true owner of a security or property which may be registered in another name.

An abandoned vessel at sea (a danger to navigation) or Any abandoned vessel.

Ratio of the depth of the deepest pit resulting from corrosion divided by the average penetration as calculated from weight loss.

A chain of organic molecules produced by the joining of primary units called monomers.

A type of recording siphon barometer. The mechanically magnified motion of a float resting on the lower mercury surface is used to record atmospheric pressure on a rotating drum.

Screen of cloth or other material to give the crew protection against the weather, wind and water spray.

To reduce or avoid the consumption of a resource or commodity.

An expression used to the crew to indicate that the boat is about to tack.

Any point of sail with the wind coming from the side of the boat. If the wind is coming from directly over the side, it is a beam reach. If the wind is coming from forward of abeam it is a close reach. If the wind is coming from over the quarter, it is ca ...

Usually refers to a rating that applies to an article regardless of size or quantity.

Securities, such as some debentures (perpetual debentures) and certain government loan stock.

The lowest value of a measured quality at which a sensor meets its accuracy specification.

A piece of rope placed so as to confine a spar or another rope. A handle made of rope, in the form of a circle, (as the handle of a chest.) is called a becket.

Chocks which hold and anchor in place either in a locker or on deck.

The prevailing or average weather conditions of a geographic region.