A short spar projecting over the stern of a sailing vessel to sheet the mizzen sail when the mizzen-mast is so far aft that there's not enough room inboard to bring down the sheet and trim the sail. Also, a short spar extending from the stemhead in place ...

A fitting around the propeller shaft to keep the bearing lubricated and to keep water out of the boat.

The part of a wind energy conversion device blade, or airfoil, that is the last to contact the wind.

Differential Global Positioning System

The process of changing regulatory policies and laws to increase competition among suppliers of commodities and service. The process of deregulating the electric power industry was initiated by the Energy Policy Act of 1992. (See also Restructuring)

An important parameter in establishing an entrained particle's potential to impinge on control surfaces and cause erosion.

Any machine capable of producing power to do work. An electric or hydraulic motor, steam engine or similar drive, acting directly on the deck machinery. Note—In a diesel electric motor is the prime mover.

To enter a port or harbor

A record maintained by a trading specialist of buy and sell orders for a given.

The reciprocal of polarization resistance (di/dE).

A group of points to which rates are made the same as or in relation to rates to other points in group.

A door-like device located at the mouth of a fireplace chimney flue for controlling the direction and flow of the draft in the fireplace as well as the amount of oxygen that the fire receives.

The outer layer on a coalescing filter that prevents separated liquids from re-entering the air stream. Also known as anti re-entrainment barrier.

A disturbance of surface water by conflicting current or by winds.

The amount of work done on or by a system is equal to the amount of energy transferred to or from the system.

A rocket designed primarily for routine upper air observations in the lower 250,000 feet of the atmosphere, especially that portion inaccessible to balloons (above 100,000 feet).

To reach the end; to bring one object hard up against another, as when two blocks in a block and tackle arrangement are brought together.

A number system used to describe wind forces and sea conditions from 0 for a flat calm to 12 for a hurricane

The value of the quantity measured, as indicated or otherwise provided by a measuring instrument.

An elongated area of relatively high pressure. Usually associated with and most clearly identified as an area of maximum anticyclonic curvature of the wind flow. The opposite of a trough.