An absolute temperature scale. ((

A small portable compass.

A life-threatening condition where there is loss of body heat; the greatest danger for anyone in the water. As the body loses its heat, body functions slow down, and this can quickly lead to death.

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

The part of a rotating element that counteracts any inherent thrust developed by the impellers.

A single turn of rope when a rope is coiled down.

A boat is double banked, when two oars, one opposite the other, are pulled by men seated on the same thwart.

Maintains and monitors radio, sends and receives messages. Often maintains electronic navigation. Latest replaced with certified GO (Deck officer)

A document prepared by the captain of a vessel on arriving at port; shows conditions encountered during voyage, generally for the purpose of relieving ship owner of any loss to cargo and shifting responsibility for reimbursement to the insurance company.

A sighting taken for celestial navigation at noon, when the sun is at its highest point in the sky.

An absolute temperature scale. (

Intimate mixture of oil and water, generally of a milky or cloudy appearance. Emulsions may be of two types: oil-in water (where water is the continuous phase) and water-in-oil (where water is the discontinuous phase).

This is a factor expressing deviation of a gas from perfect gas laws.

A rope net to catch the jib when it is lowered.

A projecting aperture at the end of a tube, pipe etc. serving as an outlet for compressed air. Reduces the demand on the compressor by generating the highest thrust and volume for the lowest possible air consumption.

U.S. Customs' automated program under AMS. It allows for electronic reporting of inbound (foreign) cargoes in the U.S.

(1) Said of ship's head when it moves away from wind, especially when tacking. (2) To discharge a crew and close Articles of Agreement of a merchant ship.

A fabric bag through which a gas stream is passed for the removal of particulate matter.

The air compressor continues to run, usually at full RPM, but no air is delivered because the inlet is either closed off or modified, not allowing inlet air to be trapped.

A term used to describe the hot gas pressure on the outlet side of the refrigeration compression.