A floating jack-up with displacement of 16,200 kips has its LCG 110.37 feet aft of frame zero (AF0). If 200 short tons are discharged from 120 feet AF0 and 400 short tons are discharged from 150 feet AF0, what is the new LCG?

Correct Answer: Option A — 108.0 feet

New longitudinal center of gravity (LCG) is calculated using moments: subtract the discharge moments (weight times LCG) from the initial total moment, then divide by the new final displacement. Initial moment is 16,200 * 110.37; discharged weights are 200 and 400 kips, yielding a new LCG of 108.0 feet.