These are official trade shipping terms agreed by the International Chamber of Commerce, Paris.

A white disk 12" or more in diameter which is lowered into the sea to estimate transparency of the water. The depths are noted at which it first disappears when lowered and reappears when raised.

High-Pressure

A boat that has rolled so that she is lying on her side or even rolled completely over (can be caused by a sudden gust or squall). A boat with appropriate ballast should right herself after being knocked down.

A day for general ship cleaning.

A radiosonde whose carrier wave is switched on and off in such a manner that the interval of time between the transmission of signals if a function of the magnitude of the meteorological elements being measured.

Pyrheliometer based on the comparison of the heating of two identical metal strips, one exposed to radiation, the other to a joule effect.

A diagram that indicates the average percentage of time that the wind blows from different directions, on a monthly or annual basis.

(APAC)Advises on matters involving international capital markets and the views and concerns of the.

Rapid cooling of metals (often steels) from a suitable elevated temperature. This generally is accomplished by immersion in water, oil, polymer solution, or salt, although forced air is sometimes used.

Standardized weights or volumes for heating fuels.

In thermodynamics, the integrating factor of the differential equation referred to as the first law of thermodynamics, In statistical mechanics, a measure of translational molecular kinetic energy (with three degrees of freedom). In general, the degree of ...

The heat absorbed or released when a substance undergoes a change in temperature.

An estimate of the temperature of an incandescent body, determined by observing the wavelength at which it is emitting with peak intensity (its color) and using that wavelength in Wien's law.

Surface having a thin, tightly adhering, oxidized skin (from straw to blue in color), extending in from the edge of a coil or sheet.

Is a technique for predicting whether water will tend to dissolve or precipitate calcium carbonate. If the water precipitates calcium carbonate, scale forming may result. If the water dissolves calcium carbonate, it has a corrosive tendency.

A measure of the attenuation due to scattering, of light as it traverses a medium containing scattering particles.

The part of a measuring instrument which responds directly to changes in the environment.

Under the First Law of Thermodynamics, efficiency is the ratio of work or energy output to work or energy input, and cannot exceed 100 percent. Efficiency under the Second Law of Thermodynamics is determined by the ratio of the theoretical minimum energy ...

Sea water used for ballast, let into the double bottom, or into a water-ballast tank, or trimming tanks.