The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, LM = 40,301 foot-long tons, TM = 3 foot-long tons, FSML = 30,572 foot-long tons, and FSMT = 18,732 foot-long tons. What is the longitudinal free surface correction to KG?

Correct Answer: Option C — 1.69 feet

Longitudinal free surface correction is determined by dividing the longitudinal free surface moment (FSML) by the total displacement. Applying the given values of 30,572 foot-long tons of FSML to the vessel's displacement profile results in a longitudinal free surface correction of 1.69 feet.