The DEEP DRILLER is operating with KGL at the maximum allowable value (70 knots) at a 60 feet draft. What is the value of GML?

Correct Answer: Option D — 2.63 feet

Operating at maximum allowable KGL at a 60-foot draft places the center of gravity near allowable limits. Subtracting this maximum KGL from the longitudinal metacenter (ML) obtained from the DEEP DRILLER operations manual gives the minimum required longitudinal metacentric height (GML) of 2.63 feet.