Force per unit area, usually expressed in pounds per square inch (PSI) or BAR.

A unit of pressure used with vacuum pumps, equal to 1mm of mercury and 133.32 Pascal's.

The difference between the maximum extended height and the compressed height of an air actuator.

Loose ends of line left hanging over a ship's side.

Lights required to be shown on boats underway between sundown and sunup.

Any steel bar or column, fitted vertically, to support a deck, or any part of a ship's structure. Also called a stanchion.

An opening in a deck, cockpit, toe-rail or gunwale to allow water to run off the deck and drain back into the sea.

The act of breaking out the flukes of an anchor if they are caught on some obstruction, preventing it from being normally weighed.

Pounds per square inch, differential.

Usual and accustomed speed.

A term used to describe a chemical process in which heat is released. For example, combustion is an exothermic process because heat is released. A reaction or process that produces heat; a combustion reaction.

Is a heat exchanger located immediately preceding an ejector to condense and remove a portion of the vapor in the mixture and thus reduce the total lb/hr to be handled.

A set of four twistable bayonet type shear keys used as part of a spreader to pick up a container or as part of a chassis to secure the containers.

One complete turn of the line around a cleat, spar or another line.

Also stability sail or riding sail. Any small sail set to help the boat maintain its direction without necessarily moving, as when at anchor or in heavy weather.

A sailing vessel dead in the water due to lack of wind (not moving).

A device for separating solids or suspended particles in the air before they enter the air intake of the compressor and reduce intake noise as on reciprocating compressors through a silencing chamber in the filter housing.

A figure marked on the side of merchant vessels to indicate allowed loading depths. Named after Samuel Plimsoll, English Member of Parliament and maritime reformer.

To transfer goods from one transportation line to another, or from one ship to another.

To take in, or lower a sail. To put out a light. To cover with water.