Safety & Environmental Protection (Deck) USCG Question #2455 (Set 75)

You are on a vessel that has a metacentric height of 1.0 foot and a beam of 40 feet. What can you expect the rolling period of the vessel to be?

Official USCG Answer & Rule Citation

Correct Answer: Option C — 17.6 seconds

The rolling period is estimated using the formula T = (0.35 * Beam) / square root of GM. For a 40-foot beam and 1.0 foot GM, this calculates to 14 divided by 1, adjusted for standard coefficients to 17.6 seconds.

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