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

Correct Answer: Option D — 68.59 feet

Discharging saltwater ballast alters total displacement and vertical moments. Applying standard stability calculation principles found in 46 CFR and the vessel's Operating Manual, removing the contents of tanks 1P and 1S results in a new corrected vertical center of gravity of 68.59 feet.