Is the term used for average atmospheric air at sea level in a temperature zone where it contains some moisture. It is defined in the ASME Test Code For Displacement Compressors as being at 14.696 psiA, 68

Is the ratio of weight of vapor existing in a given space to the weight that would be present if the space were saturated at the space temperature.

Canvas, wood or rope used over the side to protect a vessel from chafing when alongside another vessel or a dock.

An angle or channel from deck beam to shell frame taking the place of a bracket.

A curved inlet section on an impeller.

A portion of the discharge gas is redirected through a heat exchanger and then expanded back to suction pressure, where it is mixed with normal suction gas stream and commonly used to compensate for process flow demands.

On a square-rigged ship, a tackle used for hoisting casks and provisions.

A light sail, such as a spinnaker, used to make the most of light following winds.

A schedule of all ports to be visited on a ship's cruise, with dates of arrival and departure and the local agents' names and addresses

A framing of metal fitted over an opening in a deck, with glass or plexiglass inserted for the admission of light into a cabin, engine room, etc.

A safe anchorage, protected from most storms; may be natural or man-made, with breakwaters and jetties; a place for docking and loading.

A labyrinth type filter having the active surfaces continuously splashed with oil. Most pollutants are absorbed by the oil which when circulated releases its pollutants, which sink by gravity to the bottom of the oil pan.

A hand held pneumatic chipping tool which the blows are transmitted through a group of floating needles or metal rods.

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.

A navigational instrument which provides a bearing to a radio beacon.

Is the temperature existing at the discharge port of the compressor.

Above this pressure, the system may rupture or burst.

The opening up the back (aft) edge of the mast in which the mainsail luff rope slides when it is hoisted. Some masts have an external sail track.

An embargo imposed by a Government against another country.

ACRONYM - non-lubricated compressor.