With no environmental forces on the DEEP DRILLER, the average of the forward drafts is 59.0 feet, and the average of the aft drafts is 61.0 feet. KGL is 51.13 feet. What is the value of LCG?

Correct Answer: Option C — 2.11 feet

Longitudinal Center of Gravity (LCG) for the mobile offshore drilling unit is determined using the stability booklet hydrostatic tables. Entering the curves with the mean draft of 60.0 feet allows extraction of the moment to trim and center of flotation to compute the exact longitudinal position.