Black diamond, ball, and cone shapes hoisted on vessels during the day to indicate restricted movement, ability, or type. For example three balls means aground.

Navigable channel.

To leave a ship without authority (deserting).

Said of an object that is secured to another; attached, fixed, secured.

A warning from aloft (heads up).

A hand held pneumatic tool. Designed for light demolition work, digging, making holes etc.

The power that is consumed to overcome the frictional losses when operating in an unloaded condition.

Said of a vessel when stopped and lying near the wind in heavy weather. See Heave To

To windward, in the direction of the eye of the wind; toward the wind; in the direction from which the wind is coming

United Nations EDI for Administration, Commerce and Transport. EDI Standards are developed and supported by the UN for electronic message (data) interchange on an international level.

An absolute temperature scale. ((

To stand at the mast and pull down on a halyard as another crewmate winches it in.

Costs that vary directly with the level of activity within a short time. Examples include costs of moving cargo inland on trains or trucks, stevedoring in some ports, and short-term equipment leases. For business analysis, all costs are either defined as ...

The course of a vessel after magnetic variation has been considered, but without compensation for magnetic deviation.

The degree to which all the forces on a boat are symmetrical so the vessel sails with just a slight weather helm.

A rope net to catch the jib when it is lowered.

(1) A body of salt water. A very large body of fresh water. (2) The condition of the water around a boat. Heavy seas for example.

The International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978.

Sea water used for ballast, let into the double bottom, or into a water-ballast tank, or trimming tanks.

A single turn of rope when a rope is coiled down.