To search for a sunken object by towing a grapnel along bottom.

(1) To tip the boat over so that the boat is upside down with the mast pointing down to the sea bottom. (2) A bag in which a spinnaker or other large sail can be stowed with the lines attached so that it can be rapidly raised.

The difference between the selling price and the purchase price for investments.

The region around the equator between the Tropic of Cancer and the Tropic of Capricorn. The tropics are known for their warm weather.

The length of air flow past a wind vane required for the vane to respond to 50 percent of a step change in wind direction. Expressed in feet or meters and calculated from delay time times wind tunnel speed.

See hurricane beacon.

The bow and forward part of the vessel above the waterline.

A solar energy system that produces electricity with a PV module, and collects thermal energy from the module for heating. There are no commercially available systems available (as of 11/97).

A popular term for highly insulating window with a heat loss so low it performs better than an insulated wall in winter, since the sunlight that it admits is greater than its heat loss over a 24 hour period.

Perforation of material in outer space resulting from meteor strikes.

The tall, narrow, waterproof box that houses a vessel's centerboard and allows it to be retracted into the ship's hull.

A line connecting points of equal magnetic variation on a map.

A computer software program that simulates energy consumption of commercial buildings; used for design and auditing purposes.

The water content of a substance (a solid fuel) as measured under specified conditions being the: Dry Basis, which equals the weight of the wet sample minus the weight of a (bone) dry sample divided by the weight of the dry sample times 100 (to get percen ...

To assist or help.

A guarantee issued by a bank on behalf of a seller to a buyer to support the sellers bid or tender for a contract. If the sellers bid is accepted, and they fail to sign a contract, the buyer can claim compensation under the guarantee.

(IRS)The US agency responsible for the collection of federal taxes which include personal and corporate.

The study of waters (including oceans, lakes, and rivers) embracing either: (a) their physical characteristics, from the standpoint of the oceanographer or limnologist; or (b) the elements affecting safe navigation, from the point of view of the mariner. ...

A platform and protective coaming setting high up on a mast, to accommodate the look-out aloft while the ship is at sea.

Diesel.