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

Lying nearly head to wind and stopped, and maintaining this position by trimming sail or working engines.

A vertical support for guardrails and lifelines.

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

Small, cake-shaped pieces of ice floating down rivers.

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, ...

An adiabatic compression with no increase in entropy; a reversible-adiabatic compression.

A system of rivers and canals along the Atlantic and Gulf Coasts of the United States allowing boats to travel along them without having to go offshore.

Compartment in which clothing for issue to crew is stowed.

On larger sailing vessels, the space between the foremast and mainmast where spare spars were stored.

The swell of a ship's hull around the propeller shaft.

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

The total pressure measured from absolute zero ( i.e., from an absolute vacuum).

A type of journal bearing in centrifugal air compressors.

(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.

To change a boat's direction, bringing the bow through the eye of the wind.

A compressor belonging to the group of displacement reciprocating compressors.

This type of insurance offers the shipper the broadest coverage available, covering against all losses that may occur in transit.

Going sideways due to a current's set.

A sail having battens that run the full horizontal length of the sail.