A pilot with a license stating that they are qualified to guide vessels in a particular area.

A lit navigational aid such as a lighthouse that can be used at night or in poor visibility.

Japanese tapered pipe thread (Female).

The number of degrees of list a vessel has. The first indication that a vessel may need to reef is when there is too great an angle of heel.

The permitted increase in pressure developed after the valve has opened. Usually expressed in percentage, ie.; 3% accumulation (A.S.M.E. Code, Section I). Flows through safety/relief valves are officially determined at these overpressure conditions.

A small local current usually caused by tidal streams as they ebb and flow around or against obstructions.

A charge made for lifting articles too heavy to be lifted by a ship's normal tackle.

Abbreviation for "Not Otherwise Indexed."

After or trailing edge of a sail; the after edge of a fore-and-aft sail and the outer edges of a square sail.

Steel disc, that is dogged down over a porthole to secure against breakage of the glass and to prevent light from showing through.

To keep a weather eye is to be on the alert (heads up).

A cleat designed to hold a line in place without slipping. It consists of two narrowing jaws with teeth in which the line is placed.

A means of purifying an air stream by using both gravitational and centrifugal forces.

A penalty charge against shippers or consignees for delaying the carrier's equipment beyond the allowed free time. The free time and demurrage charges are set forth in the charter party or freight tariff.- See also Detention and Per Diem.

Most ocean freight is billed on the basis of weight or measurement tons (W/M). Weight tons can be expressed in short tons of 2000 pounds, long tons of 2240 pounds or metric tons of 1000 kilos (2204.62 pounds). Measurement tons are usually expressed as car ...

Metal strip and lead fastener used for locking freight car or truck doors. Seals are numbered for record purposes.

The length of the boat at the waterline.

Owners or operators of vessels providing transportation to shippers. The term is also used to refer to the vessels.

The top point of the line about which the earth rotates.

The most common type of sail used today, a triangle-shaped mainsail defined by the mast and one horizontal boom perpendicular to the mast.