Because there is a possibility of fuel oil being discharged overboard from a full fuel oil tank, it is decided to transfer 25 kips from tank 14 to tank 20. See COASTAL DRILLER Sample Load Form Number 1 (Rig Move). What would be the change in longitudinal moments with this transfer?

Correct Answer: Option A — 565 ft-kips

Longitudinal moment change equals the transferred weight multiplied by the longitudinal distance between tank centers. Transferring 25 kips between tank 14 and tank 20 yields a net moment variation of 565 ft-kips based on the vessel's hydrostatic tables.