Safety & Environmental Protection (Deck) USCG Question #2586 (Set 78)

Your vessel's drafts are: FWD 24'-06", AFT 25'-08"; and the KG is 22.9 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the righting arm at 50° inclination if the center of gravity is 0.5 foot off center.

Official USCG Answer & Rule Citation

Correct Answer: Option B — 2.3 feet

Obtain the righting arm at 50° inclination from the stability curves for the given drafts and KG. Subtract the transverse center of gravity correction ($0.5 \times \sin 50°$) to establish the remaining righting arm of 2.3 feet.

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