Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 25.2 feet, and the drafts are: FWD 27'-11", AFT 28'-09"; at what angle will the vessel lose positive stability?

Correct Answer: Option A — 54°

Locating the intersection of the mean draft derived from the given drafts and a KG of 25.2 feet on the cross curves of stability tables yields a vanishing angle of positive stability of 54 degrees.