At 70°, the corrected GZ = 0.5412
At 80°, the corrected GZ = minus 0.4392
It is not necessary to figure the corrected GZ at 90°,
since the value is already negative at 80°. When the
values from 10° through 80° are plotted on the grid and
joined with a smooth curve, the CORRECTED
stability curve (B) shown in figure 12-27 results. As
you can see, the corrected curve shows maximum
stability to be at 40°; it also shows that an upsetting
arm, rather than a righting arm, generally exists at
angles of heel in excess of 75°.