Your vessel's drafts are: FWD 27'-06", AFT 28'-02"; and the KG is 23.1 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 60° inclination.

Correct Answer: Option B — 1.8 feet

Entering the blue pages cross-section curves with a mean draft corresponding to 27'-06" forward and 28'-02" aft, combined with a KG of 23.1 feet, allows direct interpolation of stability parameters. Tracing the curve to a 60-degree angle of inclination yields an available righting arm of 1.8 feet.