Small passages

A document issued by the U.S. government; authorizes the export of commodities for which written authorization is required by law.

When all the sails are aback.

A revolving letter of credit that prohibits the amount not used during the specific period from being available afterwards.

Devices with passages for directing flow into alternate paths.

Authentication of B/L and when B/L becomes effective.

A device that limits fluid (liquid and gaseous) pressures by discharging some of the pressurized liquid or gas.

Pay day

The distance traveled after correction for current, leeway and other errors that may not have been included in the original distance measurement.

100 fathoms or 600 feet (6 feet to a fathom).

Ports in order of calling

To veer or haul on a rope, slightly, so that a part subject to nip or chafe is moved away and a fresh part takes its place.

States that the volume of a mixture of gases is equal to the sum of the partial volumes which the constituent gases would occupy if each existed alone at the total pressure of the mixture.

Directly ahead on the extension of the ship's fore and aft line.

A compressor belonging to the group of dynamic compressors. Characterized by radial flow. (Centrifugal)

Time based on Greenwich Mean Time.

Distance at sea is measured in nautical miles, which are about 6067 feet, 1.15 statute miles or 1852 meters. Nautical miles have the unique property that a minute of latitude is equal to one nautical mile. Measurement of speed is done in knots where one k ...

(Delivered Duty Unpaid) (...Named Port of Destination):A Term of Sale where the seller fulfills his obligation to deliver when the goods have been made available at the named place in the country of importation. The seller has to bear the costs and risks ...

are registered in the United States and are subject to additional U.S. laws and regulations to which foreign-flag vessels are not. They must be owned by U.S. citizens, corporations, or governments and must be crewed mainly by U.S. citizens.

(1) To warp is to move a vessel by lines - move a boat by hauling on lines attached to docks or anchors. (2) The longitudinal threads in canvas and other textiles. (3) Hawser used when warping. (4) The line by which a boat rides to a sea anchor. (5) Moori ...