A short period at the turn of the tide. The time between flood and ebb tides when there is no current flow.

The distance from the surface of the water to the main deck or gunwale.

Illegal passenger who hides himself on board a ship in order to gain free passage or to escape from a country.

A formula of the specific factors or elements that control the making of a rate. A rate can be based on any number of factors (i.e., weight, measure, equipment type, package, box, etc.).

The anchor is under the hawse .

The mast aft of the mainmast in a sailing ship - the shorter mast behind the main mast on a ketch or yawl, or the third aftermost mast of a three-masted schooner or square-rigged ship.

Liquefied Petroleum Gas, or a carrier of LPG.

Line on a chart linking points of equal depth. also known as a Depth Contour.

The right to maintain a course according to the Rules of Navigation. When two boats are on intersecting courses, one is the "stand-on" vessel (has "right of way" and must hold its course steady) so the other "give-way" vessel may steer clear. ...

LPG or propane for short. Propane is a common fuel used for cooking and heating. CNG natural gas is considered safer because propane is heavy than air and will sink into the bilge if it leaks, creating the potential for an explosion. Propane is more easil ...

The horsepower required to compress adiabatically the air or gas delivered by the compressor through the specified range of pressures.

Vibration isolation mount. Provides reductions in vibration transmission.

A type of knot used to fasten an anchor to its line.

In water transportation, the time it takes between the arrival of a vessel and its departure.

A valve that controls the flow of air that passes through the valve. Used often for retardation or timing circuits, but especially for regulating the piston speed in cylinders.

Cubic feet per minute (cfm) of air required at the inlet to the distribution system.

To change the course of a sailing vessel.

An instrument for measuring the amount of air flow of a compressor. Measured in CFM.

Under ICC and common law, the requirement that a rate not be higher than is necessary to reimburse the carrier for the actual cost of transporting the traffic and allow a fair profit.

A shipwrecked sailor as compared with one who has been marooned or deliberately put ashore.