An absolute temperature scale. ((

Is the ratio of the polytropic compression energy transferred to the gas to the actual energy transferred to the gas.

To let out a line or sail slowly; to slacken or relieve tension on a line; to take pressure off.

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

Permanent pip iron ballast specially shaped and placed along each side of keelson. Name is sometimes given to any iron ballast.

A charge, based on a fixed daily rate.

A sailing ship with three to five masts, all of them square-rigged except the after mast, which is fore-and-aft rigged.

a circular donut-shaped buoy designed to support a person in the water. It is attached to the vessel with a (floating) line so that the person can be hauled back to the boat.

Said of a lighthouse not tended.

(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.

The International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978.

A rope used for securing any movable object in place

A cleat designed to hold a line in place without slipping. It consists of two narrowing jaws with teeth in which the line is placed.

Any person or entity who, in a contract of carriage, undertakes to perform or to procure the performance of carriage by rail, road, sea, air, inland waterway or by a combination of such modes.

Bulk Carrier or Motorcar Carrier

Stemming the tide or sea means to head the vessel's bow directly into the current or waves. Overcome adverse circumstances.

Abbreviation for "With Particular Average."

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.

A law of chemistry and physics: the rate of diffusion of one substance in another is proportional to the negative gradient of the concentration of the first substance.

Official terminology for life jacket. When properly used a PFD will support a person in the water. Also called a life jacket, life preserver or life vest.