In the days of tall ships the barometer was a glass vessel with a thin stem. The fluid in the glass (in most cases water) would move up and down the stem as the pressure of the surrounding atmosphere changed. These movements were used to predict changes i ...

A device for furnishing fresh air to compartments below deck or exhausting foul air. Construction designed to lead air below decks. May have a cowl, which can be angled into or away from the wind; and may be constructed with baffles, so that water is not ...

An opening such as a hole or vent. An opening through which air can pass, or a restricted opening placed in a pipe line to provide a means of controlling or measuring flow.

A call requesting direction in answer to the report of a lookout that an object has been sighted.

The power that is consumed to overcome the frictional losses when operating in an unloaded condition.

This is a factor expressing deviation of a gas from perfect gas laws.

The principal sail that is set on the main mast.

A timber or rib of a ship running from the keel to the side rail; the transverse strengthening members in a ship's hull that extend from the keel to the deck or gunwale. The frames form the shape of the hull and act as a skeleton on which the hull plankin ...

Warehouse Withdrawal for Transportation Immediate Exportation.Allows merchandise that has been withdrawn from a bonded warehouse at one U.S. port to be exported from the same port exported without paying duty.

Cargo landed in excess of the quantity on manifest.

Clauses introduced by charterers based on shortage of delivered cargo because of increased oil prices.

A rope net to catch the jib when it is lowered.

A naval rank next below that of lieutenant-commander, which is next below that of captain (the equivalent of commander).

A platform with or without sides, on which a number of packages or pieces may be loaded to facilitate handling by a lift truck.

Is the suction pressure attained by an ejector or positive displacement vacuum pump at zero capacity with the suction absolutely blanked off.

A movement of equipment from an origin rail ramp to a destination rail ramp only.

A condition where the particles (dust) becomes embedded in the fabric filter over time and are not removed by the bag cleaning process.

A single turn of rope when a rope is coiled down.

A track or groove in the back of the mast to which the sail is attached by means of lugs or the bolt rope.