Safety & Environmental Protection (Deck) USCG Question #3078 (Set 86)

Your vessel displaces 10,000 tons and has a KG of 22.6 feet. What will be the length of the remaining righting arm at an angle of inclination of 45° if the center of gravity shifts 2.0 feet transversely? (Use the information in Section 1, the blue pages, of the Stability Data Reference Book)

Official USCG Answer & Rule Citation

Correct Answer: Option B — 2.7 feet

Using the Stability Data Reference Book for 10,000 tons displacement and 22.6-foot KG, find the GZ at 45 degrees. Subtract the transverse shift effect, calculated as GG' * cos(45). With a 2.0-foot shift, the remaining righting arm is 2.7 feet.

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