The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Severe motion makes it necessary to ballast down to survival draft. It is decided to check stability at the intermediate draft of 32 feet. If the added ballast has an average VCG of 9.03 feet, and the sum of free surface moments is 56,244 foot-tons, what is the new GML?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 4.06 feet
Transverse metacentric height calculations incorporate added ballast weight, vertical center of gravity, and free surface corrections. Applying standard hydrostatic formulas yields the new corrected transverse metacentric height (GML) of 4.06 feet for the specified intermediate draft condition.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.