While in transit at a draft of 20.5 feet, the DEEP DRILLER has a KGL of 65.00 feet. What is the GML?

Correct Answer: Option D — 5.10 feet

Longitudinal metacentric height (GML) is the difference between the longitudinal metacenter (ML) and the longitudinal center of gravity (KGL). Subtracting the given KGL of 65.00 feet from the stability booklet's ML for a 20.5-foot transit draft yields a GML of 5.10 feet.