These terms are the condition for which that code number is to be used. The terms may be synonyms of the code title, or, in the case of other specified codes, the terms are a list of the various conditions assigned to that code.
Physical oceanography, or marine physics, studies the ocean's physical attributes including temperature-salinity structure, mixing, surface waves, internal waves, surface tides, internal tides, and currents.
1 The Two-Ocean War: A Short History of the United States Navy in the Second World War (1963) ISBN 1591145244. 2  Morison, History of United States Naval Operations in World War II.