Wind with a speed between 4 and 27 knots (4 and 31 mph); Beaufort scale numbers 2 through 6.

The number of degrees per day that the daily average temperature (the mean of the maximum and minimum recorded temperatures) is below a base temperature, usually 65 degrees Fahrenheit, unless otherwise specified; used to determine indoor space heating req ...

The maximum stress that a material is capable of sustaining without any permanent strain (deformation) remaining upon complete release of the stress.

The true freezing point of water. The temperature at which a mixture of air-saturated pure water and pure ice may exist in equilibrium at a pressure of one standard atmosphere.

Megabyte

Used for lashing down sails, awnings, etc., a series of round turns where the end is passed over the standing part and under the bight and pulled taut on each turn.

Tons Per Centimeter (Immersion)

ACRONYM - A unit of electrical current or rate of flow of electrons through a conductor. One volt across one ohm of resistance causes a current flow of one ampere. One ampere is equal to 6.25 x 1018 electrons per second passing a set point in a circuit. A ...

An instrument which records the duration of sunshine and gives a quantitative measure of the amount of sunshine by the action of the sun's rays upon blueprint paper. A type of sunshine recorder.

The downward flux of atmospheric radiation passing through a given level surface, usually taken as the earth's surface. This result of infrared (long-wave) absorption and reemission by the atmosphere is the principal factor in the greenhouse effect.

To cast off or untie. (See BEND.)

Nautical Institute Headquarters, London

Patrol/Work Boat.

Floating Dock

The removal of heat from a gas after compression is completed.

The farthest aft.

A chromate conversion coating produced on magnesium alloys in a boiling solution of sodium dichromate.

The temperature at which a material ignites.

The process by which a third party, usually a bank guarantees the undertaking of the drawee to meet their responsibility under a Bill of Exchange. The words "Per Aval" and the signature of the avalizing (guarantor) party must be written on the Bill. ...

See copper-accelerated salt-spray test.