What is the decrease in longitudinal moments for the Deep Driller if 2.0 feet of ballast is transferred from 1S to 10P?
Official USCG Answer & Rule Citation
Correct Answer: Option B — 14,609 ft-tons
Shifting ballast weight longitudinally alters the vessel's trim moments. Multiplying the mass of 2.0 feet of transferred ballast by the longitudinal distance between tank 1S and 10P extracts from the DEEP DRILLER hydrostatic manual a total reduction of 14,609 foot-tons.
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