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.

Also saloon; the main social cabin of a boat

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

A manmade waterway used to connect bodies of water that do not connect naturally. Canals use locks to raise and lower boats when connecting bodies of water that have different water levels.

Japanese tapered pipe thread (Female).

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

Valve of a pump box; to prime a pump.

An act of Congress (1903) prohibiting rebates, concession, misbilling, etc. and providing specific penalties for such violations.

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

A pipe lead-in for anchor chain through ship's bow.

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.

To reeve and secure a stopper (hold a strain on a line while transferring it).

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

The swiveled opening at the top of a ventilator.

The stay that the jib is hoisted on. Usually the headstay.

Cotton yarn used for cleaning purposes.

Is the property of a substance that gauges the potential or driving force for the flow of heat.

See Heave To

Seaman's term for the period of work on board ship for which he has been paid in advance when signing on.

The foremost sail; a triangular shaped foresail forward of the foremast.