The after section of the propeller shaft.

A device used to transfer heat from a fluid (liquid or gas) to another fluid where the two fluids are physically separated.

A device for measuring power consumption.

Man or boy employed in sailing deep-water craft. Word is sometimes loosely used to include men who go to sea. Used officially to denote a seaman serving on deck.

Assessment model for Coastal and Marine Environments.

Convention on Limitation of Liability for Maritime Claims

The art and science of designing vessels.

A device consisting of a heat transfer system, a moisture elimination system and a refrigeration system designed to improve the quality of the air and reduce the temperature of the air.

Cargo Tank

A fluid (as hydrogen or air) that tends to expand indefinitely. Is one of three basic phases of matter.

Total Loss

A low headroom space below decks used for provisions or spare parts, or miscellaneous storage.

A coupling device which consists of a spring loaded shutoff valve and a positive locking mechanism. It is used to connect tools, hoses and other accessories. Also known as Quick Disconnect.

Corrosion due to the action of "local cells," that is, galvanic cells resulting from inhomogeneities between adjacent areas on a metal surface exposed to an electrolyte.

Leaking, Underground.

A line with a weight on the end used to measure depth. The lead is dropped into the water and marks on the line are read to determine the current water depth. The lead usually has a cavity to return a sample of the bottom type mud, sand, etc.

Heat cannot, of itself, pass from a colder to a hotter body.

A unit used when measuring atmospheric pressure. 33.86 millibars.

Towards the center line of a ship (towards the center).

The difference between magnetic north and true north, measured as an angle. Magnetic variation is different in different geographic locations, so the nearest compass rose to each location on a chart must be used.