A stationary element between stages of a multistage centrifugal compressor. It may include guide vanes for directing the flowing medium to the impeller of the succeeding stage. in conjunction with an adjacent diaphragm, it forms the diffuser surrounding t ...

A term describing the seamen of a British warship.

A set of radio, sound, and visual signals designed to aid in communications between vessels without language problems. It can be used with Morse Code, with signal pennants, and by spoken code letters.

A combination of one or more blocks and the associated tackle necessary to give a mechanical advantage. Useful for lifting heavy loads.

Scoop like devices used to direct air into and ventilate a boat.

Froth of sea foam.

A free port in a country divorced from Customs authority but under government control. Merchandise, except that which is prohibited, may be stored in the zone without being subject to import duty regulations.

elegant, luxurious. Originally an acronym for Port Over Starboard Home. Created by British travelers to India or Australia, describing the preferred accommodations aboard ship, which lessened effects of the tropical sun on the cabins during the voyage.

In maritime warfare, a declaration published by a power forbidding sea-borne trade with an enemy.

An anchor which has become entangled with some object on the bottom, or, on weighing, has it's rode or chain wound around its stock or flukes.

A type of journal bearing in centrifugal air compressors.

Large ships dating back to the 17th century typically with three masts carrying rectangular sails mounted on horizontal spars called yards. A sailing-ship rig with rectangular sails set approximately at right angles to the keel line from horizontal yards.

To ease away slowly, as in a line, sheet, or falls of a tackle.

Abbreviation for "Bales."

Any rope or line.

The rod connecting the disc to the lever on a valve.

block

Steel section running along the length of each bottom edge of a shipping container giving its structural strength.

Once the only method, other than human voice, of passing orders to men on board ship; the instructions to perform certain tasks were conveyed by different notes and pitches on the high-pitched whistle.

A structure of heavy timbers placed between ground ways and cradle to support the ship during launching.