The length of the boat at the waterline.

A measure of the number of cycles or wavelengths of electrical energy per second; U.S. electricity supply has a standard frequency of 60 hertz.

Alternatively letting the sails draw, then spilling wind so as to keep a vessel more or less in one place until space is available, marking time.

The concept of capturing and converting the energy available in the motion of ocean waves to energy.

The total infrared radiation emitted from the earth's surface. To be carefully distinguished from atmospheric radiation, effective terrestrial radiation, and insolation.

An economic situation in which there is a general fall in the level of.

Inter-Island Service in the Comoros.

The transfer of heat through a material by the transfer of kinetic energy from particle to particle; the flow of heat between two materials of different temperatures that are in direct physical contact.

A wall to prevent the spread of fire; usually made of non-combustible material.

Sailing with the tiller over to leeward by force of the wind

A temperature-sensing element which converts thermal energy directly into electrical energy. In its basic form it consists of two dissimilar metallic conductors connected in a closed loop. Each junction forms a thermocouple. If one thermocouple is maintai ...

An instrument used to measure and record earthquake vibrations and other earth tremors.

A stationary vessel carrying a light used for navigation, serving the same purpose as a lighthouse.

Structural pieces running fore and aft between the beams.

The structural elements (walls, roof, floor, foundation) of a building that encloses conditioned space; the building shell.

A statement of the electric rate(s), terms, and conditions for electricity sale or supply.

The visibility along an identified runway, determined from a specified point on the runway with the observer facing in the same direction as a pilot using the runway. Compare to runway visible range.

Generic term for insurance covering costs incurred due to illness, injury and.

A reaction in which there is a decrease in valence resulting from a gain in electrons. Contrast with oxidation.

This compound of nitrogen and oxygen is formed by the oxidation of nitric oxide (NO) which is produced by the combustion of solid fuels.