A semisubmersible, with a TCG of 0.5 foot to port, displaces 20,000 long tons. Bulk, weighing 400 long tons, is loaded in P-tanks located 50 feet starboard to the centerline. What is the new TCG?

Correct Answer: Option A — 0.49 foot starboard of centerline

Loading weight on one side shifts the transverse center of gravity toward it. Initial moment is 20,000 tons at 0.5 ft port (-10,000). Adding 400 tons at 50 ft starboard (+20,000) gives a net moment of +10,000 ft-tons. Dividing by new displacement (20,400 tons) results in 0.49 ft starboard.