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The curve may be constructed in the following manner: Having found by calculation the position of the transverse metacenter, M, for a given displacement Figs. 1 and 2 the metacentric height, G M, is then determined either by calculations, or more correctly by experiment, by varying the position of weights of known magnitude, or by the stability indicator itself.
For a vessel with a given displacement, the metacenter and center of gravity being known, it is easy to lay off in the form of a diagram its stability or power of righting for any given angle of heel.
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