The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Weather conditions make it necessary to ballast down to survival draft. It is decided to check the 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 KGL?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 61.16 feet
Applying standard hydrostatic stability principles, adding ballast weight with known vertical centers of gravity and free surface moments requires calculating moments to find the new vertical center of gravity (KGL) using total weight and final vertical moments summation.
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