Media of heat transfer in a refrigeration unit. R12 and R22 are commonly used refrigerants.

A powerful, strongly built boat designed to tow or push other vessels, and to assist in maneuvering a ship in a confined area.

Moving through the water.

A halyard used to raise the spinnaker.

Tool used for transferring course and bearing to and from the compass rose on a chart

Supporting braces made into a right angle, used for strength when two parts are joined.

Columnar support for the steering wheel in the cockpit.

Remove a boat from the water.

A ship designed to carry all types of general cargo, or "dry cargo."

A situation in which waves strike a boat from the side, causing it to roll unpleasantly.

To let go altogether.

The area between opposing shipping lanes, restricted to most navigation except for crossing with caution

Any raised portion of a vessel/s hull above an upermost continuous deck such as a poop, bridge or forecastle and extending from side to side of the vessel.

The dimensions of all parts which go into the construction of a ship's hull.

A tiller that is designed to be used in the event that wheel steering fails.

A slang term for an open-top trailer or container with a tarpaulin cover.

1,000 grams or 2.2046 pounds.

The place where a vessel lies. The place in which a man sleeps.

The Customs tariff used by most countries worldwide. It was formerly known as the Brussels Tariff Nomenclature and is the basis of the commodity coding system known as the Harmonized System.

Abbreviation for "Trailer on Flat Car." The movement of a highway trailer on a railroad flatcar. Also known as Piggyback.