A mechanical cleat used to hold a line automatically. It uses two spring loaded cams that come together to clamp their teeth on the line, which is place between them.

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

Kilograms per square centimeter absolute.

The principal sail that is set on the main mast.

To watch a vessel at anchor at the turn of tides, and cast her by the helm, and some sail if necessary, so as to keep turns out of her cables.

Is a technique for predicting whether water will tend to dissolve or precipitate calcium carbonate. If the water precipitates calcium carbonate, scale forming may result. If the water dissolves calcium carbonate, it has a corrosive tendency.

Warehouse Withdrawal for Transportation Immediate Exportation.Allows merchandise that has been withdrawn from a bonded warehouse at one U.S. port to be exported from the same port exported without paying duty.

An absolute temperature scale. ((

A solid wharf or structure built of stone along the edge of a harbor used for loading and offloading of cargo, and embarkation and disembarkation of passengers.

(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.

A distinctive fixed reference point that can be used for navigation.

A mat of fibers that provide a barrier to particles entrained in the flow of air or gas.

Navy term meaning Officer of the deck.

The process of plotting a theoretical position or future position based on advancing from a known position using speed, time, and course, without aid of objects on land, of sights, etc. Term comes from deduced reckoning, abbreviated first to "ded reckonin ...

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

An order meaning sufficient (enough).

Also VMG. Actual boat speed after adjusting for such factors as current and leeway.

To remove or disassemble gear after it is used.

A naval rank next below that of lieutenant-commander, which is next below that of captain (the equivalent of commander).

A small rail on tables and counters used to keep objects from sliding off when the vessel rolls and pitches.