Any object used to increase the drag of a boat and slow her down. Typically shaped like a parachute or cone opened underwater, drogues decrease a boat's speed in heavy weather. Also see sea anchor.

(1) To lay a line out in coils so that it can run without fouling. (2) Folding a sail in layers on the boom.

The curved part of a ship's hull where the side and the flat bottom meet.

A device which operates compressors in sequence according to a programmed schedule.

Also bosun, bos'n, bo's'n, and bo'sun, all of which are pronounced bosun. The highest unlicensed rating in the deck department who has immediate charge of all deck hands, oversees deck crew, maintenance and upkeep of the ship except for the engine room an ...

The largest circle which can be inscribed on a sphere by a plane that cuts through the center of the sphere. On the earth, the equator is a great circle, as are all the meridians of longitude which pass through both poles. The shortest distance between tw ...

A gas produced by many fruits and vegetables that accelerates the ripening and aging processes.

To capsize.

Anchor cable is caught around the fluke or an object is caught around the anchor .

A pair of additional backstays temporarily rigged to provide extra support to the masts of square rigged vessels when sailing downwind.

Temperature at which condesation first occurs and moisture is formed.

To approach something from upwind

A sound signal device (not necessarily mechanically operated).

Imaginary lines drawn through the north and south poles on the globe used to measure distance east and west of the prime meridian at Greenwich, England (designated as 0

One which blows across a boat's side

A large, flat bottomed boat used to carry the mud from a dredge.

The topmost planking in the sides, next below the gunwale, often thicker than other planking.

A vessel's position determined by observation and navigational data.

A small flat boat, usually inflatable.

Pieces of plank bolted to the outer end of the bowsprit, to reeve the foretopmast stays through.