On gaff-rigged sailing vessels the luff of the mainsail is secured to the mast by wooden hoops, which slide up or down the mast as the sail is raised or lowered.

A unit used to measure the barometric pressure of the atmosphere. 1 millibar equals 0.03 inches of mercury.

The bottom of a wave, the valley between the crests.

Restrictions on the use of a property.

A curve on a chart showing power (kW) supplied (on the horizontal axis) plotted against time of occurrence (on the vertical axis) to illustrate the variance in a load in a specified time period.

The apparent angle of the sun north or south of the eath's equatorial plane. The earth's rotation on its axis causes a daily change in the declination.

Confirms the transfer of ownership of certain goods to another person in return for money paid or loaned.

A horizontal pole or spar attached to the mast to which the foot (lower edge) of the sail is fastened

Back pressure.

A government document declaring designated goods to be shipped out of the country. To be completed by the exporter and filed with the U.S. Government.

A heat exchanger in which two fluids flow in opposite directions for transfer heat energy from one to the other.

Liquefied Natural Gas, or a carrier of LNG.

(ECU)A weighted average of European Community currencies with weighting tending to be proportional to a.

To attach a boat to a mooring, dock, post, anchor, etc.

A tall cone shaped navigational buoy.

An axail flow fan mounted in a section of duct to move conditioned air.

Wood or metal supports (Dunnage) to keep shipments in place to prevent cargo shifting.

A bunk which runs under the cockpit

(1) Small boat for one or two rowers. (2) Small fishing vessel with foresail, boom mainsail, and mizzen trysail.

A person in command of a ship. A person certified as competent to command a ship. A master mariner.