(1) A nautical instrument, on the arc of which is a finely graduated scale showing degrees and minutes, with adjustable reflectors, etc.; used to find the altitude of heavenly bodies, angular distances, etc. (2) On a steering gear, the rudder quadrant is ...

The absolute centimeter-gram-second unit of force; that force that will impart to a free mass of one gram an acceleration of one centimeter per second per second.

Structural pieces running fore and aft between the beams.

A wood or gas burning heating appliance that fits into the opening or protrudes on to the hearth of a conventional fireplace.

Sir Napier Shaw's name for the approximate absolute temperature scale,

The shares of companies that are well-positioned to withstand recession, usually because the goods.

Additional thickness of planking on a wooden ship about her waterline to give the vessel more stability.

The force that pulls a wind turbine blade, as opposed to drag.

System consisting of one or more metals and all parts of the environment that influence corrosion.

An instrument used for the determination of the electrical conductivity of the atmosphere.

The part of the upper deck which is abaft the mainmast, or in that general location of a ship without one. The quarterdeck was normally reserved for officers.

A pipe lead-in for anchor chain through ship's bow.

A stream of vapor, gas or liquid coming out fast from a narrow orifice.

A keel that is narrow and deeper than a full keel.

Nautical slang for the spirit of the sea, usually in the form of a sea devil. Davy Jones's Locker is the bottom of the sea, the final resting place of sunken ships, articles lost or thrown overboard, and of men buried at sea.

The ability of a building construction assembly (partition, wall, floor, etc.) to resist the passage of fire. The rating is expressed in hours.

A form of thermal energy resulting from combustion, chemical reaction, friction, or movement of electricity. As a thermodynamic condition, heat, at a constant pressure, is equal to internal or intrinsic energy plus pressure times volume.

To heave in until the vessel is riding nearly over her anchor.

A type of motor designed to operate precisely at the synchronous speed with no slip in the full-load speeds (rpm).

Alternating current in which three separate pulses are present, identical in frequency and voltage, but separated 120 degrees in phase.