Safety & Environmental Protection (Deck) USCG Question #3084 (Set 87)

Your vessel's drafts are: FWD 24'-06", AFT 25'-04"; and the KG is 17.8 feet. Use the selected stability curves in the blue pages of the Stability Data Reference Book to determine the remaining righting arm at 75° inclination if the center of gravity is 2.5 feet off the centerline.

Official USCG Answer & Rule Citation

Correct Answer: Option C — 5.4 feet

Use the mean draft to select the stability curve. Find the GZ at 75 degrees for the 17.8-foot KG. Apply the correction formula: GZ_remaining = GZ_curve - (GG' * cos(75)). With a 2.5-foot transverse shift, the remaining righting arm is 5.4 feet.

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