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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.

Running a compressed air system at a higher than needed pressure.

Anchor is off the sea bottom when being heaved in .

Air pressure

An old salt I know uses this term in reference to a "tangled mess of lines".

A traditional maritime saying to indicate that it is time for a morning drink, it was generally assumed that in northern latitudes the sun would show above the foreyard of a ship by 11.00 which was approximately the time in many ships of the forenoon "sta ...

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.).

Forward. The opposite of abaft.

To change the course of a sailing vessel.

The process of assimilating many small shipments into one large shipment at a central point so that economies of scale may be achieved; to commence discharge of cargo.

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

A stated amount over a fixed rate to one point to make a rate to another point.

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

A position based on estimations of a boat's position using estimated speed, currents, and the last known position/fix - of the boat.

The difference in depth between high and low tide.

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 ...

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

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

A measurement applied to filters or filter media to indicate the particle size at which suspended solids above that size will be removed.