Compressors in which successive volumes of air or gas are confined within a closed space, and compressed. They may be either reciprocating or rotating. (Trap air and then squeeze it to the desired pressure).

In a wheel, such as a steering wheel, a spoke is a rod that extends from the hub outwards to the rim.

Small line consisting of several loosely twisted yarns.

A warehouse authorized by Customs authorities for storage of goods on which payment of duties is deferred until the goods are removed.

Convention on International Regulations for Preventing Collisions at Sea; Rules of the Road. Internationally accepted rules by which vessels at sea must keep clear of each other.

A compressor that is designed to operate at lower pressures. Usually a blower is an air compressor that operates below 2 barg, although this figure depends upon the respective manufacturer.

A measure of air compressor efficiency, usually in the form of bhp/100 acfm or acfm/bhp

is the energy a substance possesses because of its elevation above the earth (or above some other chosen datum plane). .

Elevated structure from which coal and other cargoes can be loaded into a vessel. Name is also given to a landing-place, or loading-place.

A large and powerful sheet winch

A program whereby the U.S. government attempted to offset the higher shipbuilding cost in the U.S. by paying up to 50% of the difference between cost of U.S. and nonU.S. construction. The difference went to the U.S. shipyard. It is unfunded since 1982.

An amount added or deducted from base rate to make a rate to or from some other point or via another route.

Sailing with the wind coming from the stern or quarter of the boat.

On steam vessels has responsibility for the boilers, on diesels, the evaporators and the auxiliary equipment.

Is the volume of a given weight of gas, usually expressed as cu ft/lb as SPT conditions.

(1) A spar that extends from the bow of the boat. (2) A spar stretching diagonally across a four-sided fore-and-aft sail to support the peak.

Compounds containing chlorine, fluorine or bromine, used as aerosol propellants, refrigerants, foaming agents and solvents and which, on decomposition by sunlight, produce oxides of chlorine responsible for the removal of ozone from the stratosphere.

A bank that, in its own country, handles the business of a foreign bank.

the weight of a specified artificial contaminant that must be added to the influent to produce a given differential pressure across a filter at specified conditions. Used as an indication of relative service life.

A fitting of wood or metal, with horns, used for securing lines (tying up).