Deck General USCG Question #4356 (Set 139)

The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (transit). What is the new metacentric height corrected for transverse free surface effects if the entire contents of Salt Water Ballast Tanks 1P and 1S are discharged? (Use KMT = 375.38 feet)

Official USCG Answer & Rule Citation

Correct Answer: Option D — 306.79 feet

Transverse metacentric height (GMT) after discharging ballast requires subtracting the free surface correction (FSC) from the uncorrected transverse metacentric height, utilizing vessel-specific hydrostatic tables to yield the correct final transverse stability characteristic of 306.79 feet.

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