, 40 deg., and 60 deg. respectively, and which
to any convenient scale are set off as the ordinates in the stability
curve shown in Fig 3.
[Illustration: STABILITY INDICATOR FOR SHIPS. Fig. 1.]
Having obtained the curve, A, in this manner for a given metacentric
height, we will suppose that on the next voyage, with the same
displacement, it is found that, owing to some difference in stowage,
the center of gravity is 6 in. higher than before. The ordinates of the
curve will then be G N and G O--Fig.2--and the stability curve will
be as at C--Fig. 3--showing that at about 47 deg. all righting power
ceases. Similarly, if the center of gravity is lowered 6 in. on the
same displacement, the curve, B, will be found, and in this manner
comparative diagrams can be constructed giving at a glance the stability
of a vessel for any given draught of water and metacentric height.
[Illustration: STABILITY INDICATOR FOR SHIPS. Fig. 2.]
[Illustration: STABILITY INDICATOR FOR SHIPS. Fig. 3.]
The object of Mr. Alexander Taylor's indicator is to measure and show
by simple inspection the metacentric height under every condition of
loading, and therefore to make known the stability of the vessel.
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