Deck General USCG Question #4160 (Set 133)

The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, and FSMT = 18,732 foot-long tons. What is the metacentric height corrected for transverse free surface effects?

Official USCG Answer & Rule Citation

Correct Answer: Option C — 8.02 feet

Transverse metacentric height corrected for free surface effects requires subtracting the total transverse free surface correction (FSMT divided by displacement) from the uncorrected metacentric height. Following stability principles and the vessel's specific hydrostatic particulars yields the correct corrected GMT of 8.02 feet.

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