A sudden, significant increase in station pressure.

Category:Meteorology

In spray painting applications, a sealed paint cup with a paint gun which puts a measured amount of air pressure into it. This then forces the paint to the gun for atomization.

Category:Sea Words

Difference between minimum and maximum pressures for an air compressor. Also called cut in-cut out or load-no load pressure range.

Category:Sea Words

The qualified operating pressure which is recommended for a component or a system by the manufacturer.

Category:Sea Words

A valve which enables pressure to be reduced, or kept constant at a desired level.

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A device actuated by inlet static pressure and designed to open during an emergency or abnormal condition to prevent a rise of internal pressure in excess of a specified value.

Category:Sea Words

The difference between the discharge pressure and the intake pressure.

Category:Sea Words

The pressure measured in a flowing stream (liquid or gas) in such a manner that no effect on the measurement is produced by the velocity of the stream.

Category:Sea Words

The pressure which overcomes the total resistances in a system. It includes all losses as well as useful work.

Category:Sea Words

The change in barometric pressure within a specified period of time (typically 3 hours for meteorological observations).

Category:Meteorology

The pressure that would be produced by stopping a moving stream of liquid or gas.

Category:Sea Words

The total pressure minus the static pressure in an air or gas stream.

Category:Sea Words

An anemometer which measures wind speed in terms of the drag which the wind exerts on a solid body. See bridled-cup anemometer, normal-plate anemometer, pendulum anemometer.

Category:Meteorology

An anemometer which derives wind speed from measurements of dynamic wind pressures. Wind blowing into a tube develops a pressure greater than the static pressure, while wind blowing across a tube develops a pressure less than the static. This pressure dif ...

Category:Meteorology

The typical winds for a particular region and time of year.

Category:Sea Words

A rope used for additional support or for additional securing, e.g., preventer stay.

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Also known as PM, maintenance performed according to a fixed schedule involving the routine repair and replacement of machine parts and components.

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A current meter consisting of six conical cups, mounted around a vertical axis, which rotate and generate a signal with each rotation. Tail vanes and a heavy weight stabilize the instrument.

Category:Meteorology

Small marlinespike.

Category:Sea Words

Money paid by shipper to Master of ship for diligence in care of cargo. Not now paid to Master, but added to freight. Amount was usually about 1% of freight.

Category:Sea Words