What is the change in the vertical moments for the DEEP DRILLER if 2.0 feet of ballast is transferred from a full ballast tank 3P to an empty ballast tank 10P?

Correct Answer: Option C — 556 ft-tons decrease

Fluid transfers within the vessel change vertical moments based on the vertical distance between tanks. Transferring 2.0 feet equivalent of ballast between tank 3P and tank 10P results in a net downward moment reduction of 556 foot-tons, calculated using standard weight-shift formulas outlined in maritime stability manuals.