The temperature at which a solid substance undergoes fusion, i.e. melts, changes from solid to liquid form. All substances have their characteristic melting points. For very pure substances the temperature range over which the process of fusion occurs is ...

Nested Grid Model generated every 12 hours by NCEP.

The level at which ice crystals and snowflakes melt as they descend through the atmosphere.

Intimate mixture of oil and water, generally of a milky or cloudy appearance. Emulsions may be of two types: oil-in water (where water is the continuous phase) and water-in-oil (where water is the discontinuous phase).

To prevent contact with an object while bringing the ship alongside.2. To push off when making a landing.

Any device or instrument for measuring salinity, especially one based on electrical conductivity methods.

Corrosion that occurs under some coatings in the form of randomly distributed threadlike filaments.

Standardized weights or volumes for heating fuels.

United Nations EDI for Administration, Commerce and Transport. EDI Standards are developed and supported by the UN for electronic message (data) interchange on an international level.

The effect of cooling by the radiation of heat from a building to the night sky.

A pressure-plate anemometer consisting of a plate which is free to swing about a horizontal axis in its own plane above its center of gravity. The angular deflection of the plate is a function of the wind speed. This instrument is not used for station mea ...

Rolling a vessel, that is slightly ice-bound, so as to break the surface ice around her. May sometimes be done when a vessel is lightly aground, but not ice-bound.

A boat is double banked, when two oars, one opposite the other, are pulled by men seated on the same thwart.

A navigational aid with a light that flashes about once per second.

A series of Nansen-bottle water samples and associated temperature observations resulting from one release of a messenger.

See: 'tracker.

A small portable compass.

Cargo landed in excess of the quantity on manifest.

A federal agency established in 1933 to develop the Tennessee river valley region of the southeastern U.S., and which is now nation's largest power producer.

Maintains and monitors radio, sends and receives messages. Often maintains electronic navigation. Latest replaced with certified GO (Deck officer)