Displacement (ship)
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The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by t
Draft marks, by showing how low a ship is sitting in the water, make it possible to determine displacement.
Shipboard stability computer programs can be used to calculate a vessel's displacement.
In this 1940 photo, USS Aaron Ward, left, and USS Abel P. Upshur are destroyers of comparable size, but because the latter is more heavily loaded, it sits lower, displacing more water.
Greek philosopher Archimedes having his famous bath, the birth of the theory of displacement
Washington Naval Treaty
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The Washington Naval Treaty, also known as the Five-Power Treaty, was signed during 1922 among the major Allies of World War I, which agreed to prevent an arms race by limiting naval construction. It
Signing of the Washington Naval Treaty (1922)
Akagi (Japanese ship originally planned as a battlecruiser but converted during construction to an aircraft carrier) in April 1925
HMS Hawkins, lead ship for her class of heavy cruisers alongside a quay, probably during the interwar period
Japanese denunciation of the Washington Naval Treaty, December 29, 1934