Torsional moment or couple. It usually refers to the driving couple of a machine or motor.

The part of a block which is opposite the swallow, which is where the line enters.

A slide which travels on a track to which the mainsheet may be attached. The sail shape can be subtly altered by changing the mainsheet position on the traveler.

The ability to convert energy into other forms, such as heat or chemical reaction, so that it can be retrieved for later use. Also the development, design, construction and operation of devices for storing energy until needed. Technology includes devices ...

The escape of water molecules from a liquid to the gas phase at the surface of a body of water.2. The conversion of a liquid to a vapor (gas), usually by means of heat.

Millions of cubic feet per 24 hour.

The left side of the ship.

The side-to-side (athwartship) motion of a vessel.

A large solid post on a wharf or pier for securing mooring lines; the same when constructed on the deck of a ship.

On a square-rigged ship, a small triangular sail set above the skysail in fair weather. A square version is called a Moonraker.

A dust-collection chamber containing numerous permeable fabric filters through which the exhaust gases pass. Finer particulates entrained in the exhaust gas stream are collected in the filters for subsequent treatment/disposal.

The assembly connecting the crankcase and connecting rod to the cylinder head and piston rod for translating circular to linear motion.

Cost of unloading a vessel is borne by the charterer.

A keel that runs the length of the boat.

Hundred weight (United States, 100 pounds: U.K.,112)

Chemical species slated to replace CFCs in the near future.

A hitch used to join two ropes. It can be used between lines of different diameters.

Term used in a voyage charter party, e.g. vessel shall proceed to Berth 2 at Falmouth.

An extension to the tiller allowing the helmsman to steer while hiking. This may be desired for improved visibility or stability.

Metal or plastic pieces attached to a sail's luff that slide in a mast track to allow easy hoisting of the sail.