Polaris, the North Star, is visible in the northern hemisphere and indicates the direction of north. In the southern hemisphere the Southern Cross is used to find the direction of south.

A boat that is comfortable in rough weather.

A compressor belonging to the group of displacement reciprocating compressors.

Is a positive displacement rotary compressor.

A unit of volume. A US gallon has 231 cubic inches or 3,785 liters.

The highest operating pressure the system or component is designed to withstand.

A location that is not sheltered from the wind and seas. An open location would not make a good anchorage.

Rope made of the fibers of the hemp plant and used for small stuff or less than 24 thread (1.75 inch circumference). (Rope is measured by circumference, wire by diameter.)

A docking line going at approximately a right angle from the boat to the dock, preventing movement away from the dock.

Sailing upwind so close to the wind that the forward edge of the sail is stalling or luffing, reducing the power generated by the sail and the angle of heel. Also known as pinching.

Change direction so as to point closer to where the wind is coming from. The opposite of falling off.

Letters, numbers, and other symbols placed on cargo packages to facilitate identification. Also known as marks.

Contraction for Empty Repositioning. The movement of empty containers.

A beam which supports a deck.

A stick with a blade in the end of it used to propel a small boat through the water; The act of using a paddle to propel a boat.

Abbreviation for "Electronic Data Interface." Generic term for transmission of transactional data between computer systems. EDI is typically via a batched transmission, usually conforming to consistent standards.

(1) Term describing the status of seamen, corresponding to rank in the case of officers. (2) A method of measuring a yacht's expected performance relative to another yacht while racing. Over the years many formulas have been experimented with, in order to ...

Federal Communications Commission Rules governing radio equipment and operation in the United States.

Line led forward, from quarter of a vessel, to prevent her from moving astern.

A large, swelling wave. To surge a rope or cable, is to slack it up suddenly where it renders round a pin, or round the windlass or capstan.urge ho! The notice given when a cable is to be surged.