While loaded as shown in the DEEP DRILLER Sample Load Form #4 (Drilling), all of the liquid mud is dumped. What is the new height of the longitudinal metacenter?

Correct Answer: Option C — 61.20 feet

Longitudinal metacentric height (ML) is determined from stability hydrostatic particulars based on draft. Dumping liquid mud changes vessel draft and displacement, altering the underwater hull geometry. Entering the DEEP DRILLER stability manual curves at the revised draft yields the new longitudinal metacenter height of 61.20 feet.