An all around white light displayed at night by a ship when she is anchored.

The westerly distance in an arc from Aries, measured as an angle at the pole or as the intercepted arc of the equinoctial between the hour angle of Aries and the hour angle of the body.

Said of a vessel that is firm, strong, and unlikely to develop leaks.

A belt and line or wire used to help a crew hike out beyond the edge of a boat to counteract the boat's heel. Usually used on small vessels for racing.

Is the saturation pressure at the critical temperature. It is the highest vapor pressure that the liquid can exert.

A breakwater used as a landing pier.

A standard numerical code used by the U.S. Government to classify products and services.

Two lines spliced together to form an eye.

(1) The portion of an anchor that digs securely into the bottom, holding the boat in place. (2) The two triangular parts which make up a whale's tail.

A dock line leading forward or aft, to prevent a vessel from moving ahead or astern. The after bow spring line is attached near the bow and runs aft, where it is attached to the dock. The forward quarter spring line is attached to the quarter of the boat, ...

A machine which aspirates gas which has already been compressed and delivers the same at higher pressure.

Are the connections between the headers and the work station.

A point through which all buoyant forces on an immersed hull are assumed to act.

The distance between frames.

The short aftermost raised deck of a vessel.

A small naval sword worn by midshipmen or their equivalents when in full dress uniform.

The difference between the diameter of a shaft rod, etc., and that of the hole in which it works.

Sufficient movement through the water to allow the boat to be controlled and steered by the rudder.

A filter assembly in which the inlet, outlet and filter element axes are in a straight line.

The pressure measured in a flowing stream (liquid or gas) in such a manner that no effect on the measurement is produced by the velocity of the stream.