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.

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

A line used to tighten the leech of a sail, helping to create proper sail shape.

Abbreviation for "Origin Rail Freight Station." Same as CFS at origin except an ORFS is operated by the rail carrier participating in the shipment.

Additional thickness of planking on a wooden ship about her waterline to give the vessel more stability.

A floating island of ice. Only one-ninth of the total mass of an iceberg is visible above water level.

Abbreviation for "Not Otherwise Indexed."

Also saloon; the main social cabin of a boat

Nautical slang for the spirit of the sea, usually in the form of a sea devil. Davy Jones's Locker is the bottom of the sea, the final resting place of sunken ships, articles lost or thrown overboard, and of men buried at sea.

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.

Valve of a pump box; to prime a pump.

To store a yacht away on land for the winter

A line drawn to indicate both the direction and magnitude of a force, such as leeway or a current.

Mesh is the number of openings in a square inch of screen or sieve. It is equal to the square of the number of strands of metal or plastic screening per lineal inch. Standard US mesh screen # 16 equates to a 1.19 millimeter particle diameter, mesh size #4 ...

(1) A nautical instrument, on the arc of which is a finely graduated scale showing degrees and minutes, with adjustable reflectors, etc.; used to find the altitude of heavenly bodies, angular distances, etc. (2) On a steering gear, the rudder quadrant is ...

That part of a ship's bow where the hawse holes and hawse pipes are situated.

A vessel discharges part of its cargo at anchor into a lighter to reduce the vessel's draft so it can then get alongside a pier.

A wearable device used to keep a person afloat. Also called a life jacket, life preserver, PFD or personal floatation device.

Hoisting the ensign at 8 a.m. and down at sunset.

A type of clutch which has a spring loaded jaw or detented rolling element to control torque in an assembly tool.