A sail placed forward of the mast, such as a jib; the sail set from the foremast on a schooner; the lowest square sail on the foremast of Square Riggers.

The mechanical power required to compress polytropically and to deliver, through the specified range of pressures, the gas delivered by the compressor.

Said of a line that leads from its point of attachment towards the bow of the ship.

Electrical measurement. The output of one or several electric machines. Load also denotes the power carried by a particular circuit.

Single tariff item, established to move multiple commodities needed for a specified project, usually construction.

An outrigger used to hold a block clear of a mast or of the ship's side.

A private ship operating under license from a government against the merchant shipping of an enemy.

Loose and broken ice in bays, or along exposed edges of floes.

Document showing contents and loading sequence of a container.

Is a compression in which the temperature of a gas remains constant.

A filter assembly in which the inlet, outlet and filter element axes are in a straight line.

To gain hydrodynamic lift, causing the boat to lift, rising slightly out of the water so that it is gliding over the water rather than plowing through it, reaching speeds in excess of those normally associated with its waterline length.

(1) A spar. Such as a pole used to position a sail (e.g., spinnaker pole or whisker pole, which serves the same purpose for a jib). (2) One of the two points around which the earth spins, known as the north and south poles.

A system of reefing a sail by partially furling it. Roller furling systems are not necessarily designed to support roller reefing.

A board-shaped swinging vane, controlled by a tiller or wheel, and attached to the rudderpost or stern for steering and maneuvering a vessel.

A form requiring all data in a commercial invoice along with a certificate of value and/or a certificate of origin. Required in a few countries (usually former British territories) and usually serves as a seller's commercial invoice.

A layer of dust built up on an air filter.

Is the saturation pressure at the critical temperature.

An invoice provided by a supplier prior to the shipment of merchandise, informing the buyer of the kinds and quantities of goods to be sent, their value, and specifications (weight, size, etc.).

To take the opposite tack when sailing to windward with another yacht.