A navigational instrument which provides a bearing to a radio beacon.

A unit of work, being the work done in one hour at the rate of 1,000 watts.

Always within Institute Warranties Limits (Insurance purpose).

Iron or wood pin fitted into racks, around which lines can be belayed or secured.

Capacity of a compressor is the full rated volume of flow of gas compressed and delivered at certain set conditions.

Turning the wheel or tiller as far as possible

The semi-circular steel coupling device mounted on a tractor which engages and locks with a chassis semi-trailer.

Is used to cool compressed air or gas. Designed to reduce the temperature and liquefy condensate vapors.

The time allotted to a man to stand at the helm.

Old three-masted trading vessel which was square-rigged on the fore and main masts, and lateen rigged on the mizzen mast. Similar to the Caravel, but larger and more robust.

Old and experienced seaman.

Heat cannot, of itself, pass from a colder to a hotter body.

Name given to the metal point or ram fixed on the bows of old war galleys and used to pierce the hulls, and thus sink or disable enemy ships.

Time period from when a compressor loads until it unloads.

To make headway when there is no apparent wind.

A semi great circle joining the north and south poles. Known as lines of longitude, they cross the equator and all parallels of latitude at right angles.

A measurement of vacuum or pressure that is used to measure the airflow restriction.

The depth of the boat below the waterline; the amount of vertical distance from a boats water line to the bottom of it's keel.(2) The depth of water necessary to float a vessel(3) The belly or chord depth of the sail, its fullness

A pointed metal spike, used to separate strands of rope in splicing.

A boat which uses the wind as its primary means of propulsion.