1386. The transverse free surface correction of a floating MODU displacing 24,000 long tons is 1.0 foot. When the MODU is deballasted by discharging 8,000 long tons of ballast, the FSMT decreases by 4,000 ft-long tons. What is the new FSCT?

The new transverse free surface correction is calculated by dividing the new free surface moment by the new displacement. Initially, the free surface moment was 24,000 ft-long tons with a displacement of 24,000 long tons, resulting in a free surface correction of 1.0 foot. Deballasting reduced the displacement to 16,000 long tons and the free surface moment to 20,000 ft-long tons. Therefore, the new free surface correction is 20,000 ft-long tons / 16,000 long tons = 1.25 feet.