Any object used to increase the drag of a boat and slow her down. Typically shaped like a parachute or cone opened underwater, drogues decrease a boat's speed in heavy weather. Also see sea anchor.

Position Location Systems

The raising of capital by a borrower from his existing mortgage lender.

The payment which investors have to pay to a broker to trade on margin, commonly used in trading.

Ferrire that is formed directly from the decomposition of hypoeutectoid austenite during cooling, without the simultaneous formation of cementite. Also called proeutectoid ferrite.

A class of rain gauge in which the level of the collected rain water is measured by the position of a float resting on the surface of the water.

See mote.

A strong tropical revolving storm of force 12 or higher. In the northern hemisphere hurricanes revolve in a clockwise direction. In the southern hemisphere these storms revolve counterclockwise and are known as typhoons.

Request For Approval.

The breaking-up of paint into fine particles or droplets by a paint gun using compressed air.

Abbreviation for radio frequency.

A liquid-in-glass thermometer which uses an organic substance such as alcohol as the thermometer liquid. This type of thermometer has a low freezing point and a high coefficient of expansion. It is less accurate, however, than a mercury thermometer.

The riding lights required to be carried by vessels at anchor.

Where the water and sky or ground and sky appear to intersect.

A byproduct of low-temperature carbonization of a solid fuel.

A device which operates compressors in sequence according to a programmed schedule.

Purchase of stock and simultaneous writing of call options against stock.

Sailing with the motor on and in gear

Differential Global Positioning System

In reference to a wind turbine, a condition when the rotor stops turning.