ACRONYM - non-lubricated compressor.

Ability of a filter to remove particle matter from an air stream. Measured by comparing concentrate of material upstream and downstream of the filter. Typical particulate sizes range from .3 micron to 50 micron.

The porous device which perform the actual process of filtration.

Towards the center line of a ship (towards the center).

The headstay on which jibs are hoisted

A phrase preceding the signature of a drawer or endorser of a negotiable instrument; signifies that the instrument is passed onto subsequent holders without any liability to the endorser in the event of nonpayment or nondelivery.

A method of drying natural gas.

The after section of the propeller shaft.

A short length of line, usually braided or marled, used to temporarily bind the anchor cable to the messenger when the anchor is weighed by hand around the capstan.

On or in a ship.

The velocity of the gas in the passages between the filter units in the filter house of a gas filter.

Merchant Navy nickname for seaman whose turn of duty it is to keep the mess clean.

Order given to a boat's crew when going alongside under oars. Denotes that boat has sufficient way, and that oars are to be placed inside the boat.

The one who steers the boat.

The area (in sq inches) of the filter element that is exposed to the flow of air or fluid for effective filtering.

Itemized list of commodities with marks/numbers but no cost values indicated.

Tank,one of which is situated at each side of the top part of the hold of a bulk carrier.

To be named or to be nominated. To Be Named. Brokerage and chartering, replaces the name of the ship when it is still unknown.

A writ issued by a court; requires that specific things be done.

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.