A vessel authorised by a nation state to attack those of another.
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AERATION
The state of air being suspended in a liquid such as a lubricant or hydraulic fluid.
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OIL
A greasy, unctuous liquid of vegetable, animal, mineral or synthetic origin. Hydrocarbons in the liquid state at the prevailing temperature and pressure conditions called.
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FREEZING
Change of state from liquid to solid.
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TOTAL HEAT
The sum of sensible heat and latent heat between an arbitrary datum point and the temperature and state under consideration.
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HEAT OF FUSION
The latent heat absorbed when a substance changes from a solid state to a liquid state.
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LATENT HEAT OF CONDENSATION
Amount of heat released (lost) by a pound of a substance to change its state from a vapor (gas) to a liquid.
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INSTABILITY
The state or property of submitting to change or of tending to increase the departure from original conditions after being disturbed.
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IONOSPHERIC STORM
An ionospheric disturbance characterized by wide variations from normal in the state of the ionosphere, such as turbulence in the F-region, absorption increase, height increase, and ionization density decreases. The effects are most marked in high magnetic latitudes and are associated with abnormal solar activity.
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BOXING THE COMPASS
To state all 32 points of the compass, starting at north, proceeding clockwise. Sometimes applied to a wind that is constantly shifting.
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SEA STATE
The general condition of the free surface on a large body of water with respect to wind waves and swell at a certain location and moment, characterized by statistics, including the wave height, period, and power spectrum. The sea state varies with time, as the wind conditions or swell conditions change.
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