Use the material in Section 1, the blue pages, of the Stability Data Reference Book. If the KG is 23.0 feet, and the drafts are: FWD 15'-03", AFT 15'-09"; at what angle will the vessel lose positive stability?

Correct Answer: Option D — 90°

Shallow drafts and a moderate KG of 23.0 feet provide a high reserve buoyancy and favorable form stability, extending the positive righting arm out to a vanishing angle of 90 degrees.