The part of a rotating element that counteracts any inherent thrust developed by the impellers.

U.S. Customs' automated program under AMS. It allows for electronic reporting of inbound (foreign) cargoes in the U.S.

Uncharted navigational danger that has been reported but has not been verified by survey.

A salt or ester of carbonic acid.

To repair, clean or paint the hull.

Condition of a sailing ship when all sails have been taken down in a severe storm, very often a hazardous undertaking if there is a high sea running.

A single turn of rope when a rope is coiled down.

Said of an object that is secured to another; attached, fixed, secured.

The bearing of an object after magnetic variation has been considered, but without compensation for magnetic deviation.

(1) Said of ship's head when it moves away from wind, especially when tacking. (2) To discharge a crew and close Articles of Agreement of a merchant ship.

An absolute temperature scale. ((

A deck exposed to the wind and sea.

A support fixed on the front part of a chassis (which is retractable); used to support the front end of a chassis when the tractor has been removed.

A projecting aperture at the end of a tube, pipe etc. serving as an outlet for compressed air. Reduces the demand on the compressor by generating the highest thrust and volume for the lowest possible air consumption.

Navigable channel.

Said of a lighthouse not tended.

To let out a line or sail slowly; to slacken or relieve tension on a line; to take pressure off.

The toal temperature at the intake flange of the compressor.

Cargo which has been booked but does not arrive in time to be loaded before the vessel sails. See also "Windy Booking."

A barge equipped with tracks on which up to about 12 railroad cars are moved in harbors or inland waterways.