Safety & Environmental Protection (Deck) USCG Question #3057 (Set 86)

The sailing drafts are: FWD 22'-08", AFT 23'-04" and the GM is 4.6 feet. Use the information in Section 1, the blue pages, of the Stability Data Reference Book, to determine the available righting arm at 20° inclination.

Official USCG Answer & Rule Citation

Correct Answer: Option A — 2.1 feet

Refer to the Stability Data Reference Book, Section 1. Given the mean draft of 23' 0" and a GM of 4.6 feet, locate the corresponding stability curve. By reading the GZ value at a 20-degree angle of inclination from the provided data, the available righting arm is found to be 2.1 feet.

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