Dioctylphalate aerosol (Efficiency Test Material).

A pulpit located on the stern.

Special vessels employed in exploration for, development of or continuous production of, subsea oil and gas.

The process of checking the accuracy of and adjusting the ship's magnetic compass.

The curve (sag) of a rope, cable or chain hung between two points such as the anchor rode or towing line; the deeper the curve, the more catenary.

A machine that compresses gases. Divided into two groups; process gas compressors and oil and gas field compressors.

Two navigational aids separated in distance so that they can be aligned to determine that a boat lies on a certain line. Transits can be used to determine a boat's position or guide it through a channel. Also called a range.

Rank intermediate between officer and rating, and in charge of ratings; more or less equivalent to the rank of sergeant.

To reeve and secure a line.

The unloading of a container or cargo van.

Latitude lines.

The power which is theoretically required to compress a gas under constant temperature, in a compressor free from losses, from a given inlet pressure to a given discharge pressure.

To retire from a life at sea and settle ashore.

A movement where the load initiates at an origin rail ramp and terminates at a consignee's door.

A listing of a particular boat's steering deviation on each point of the compass

The short deckhouse or main hatchway which is raised above the level of the cabin top or coachroof.

Sailor's name for the north star, Polaris, which for all practical purposes remains fixed above the north pole, bearing north from everywhere in the northern hemisphere, making it a true aid to navigation.

Freight on which transportation charges are calculated on the basis of volume measurement.

Same as not under command.

All rigging, cranes, etc., utilized on a ship to load or unload cargo.