A semisubmersible with displacement of 19,700 long tons and KG of 50.96 feet loads 300 long tons of barite into P-tanks located 120 feet above the keel. What is the change in KG?

Correct Answer: Option C — 1.04 feet upward

Loading weight increases both displacement and total vertical moments. Initial moments equal 19,700 LT × 50.96 ft = 1,003,912 ft-tons. Adding 300 LT at 120 ft adds 36,000 ft-tons, totaling 1,039,912 ft-tons. Dividing by 20,000 LT final displacement yields 52.00 ft KG, an upward change of 1.04 feet.