The SS AMERICAN MARINER is ready to bunker with drafts of FWD 20'-04", AFT 23'-06". After all bunkers are on board, soundings indicate the tonnages shown in table ST-0172 below. Use the white pages of The Stability Data Reference Book to determine the free surface correction.

Correct Answer: Option B — 0.80 foot

Free surface correction (FSC) is calculated using the formula FSC = (i * sg_liquid) / (Displacement * sg_vessel). By referencing the SS AMERICAN MARINER Stability Data Book, the specific tank soundings and vessel displacement yield a total free surface moment of 1,600 foot-tons, resulting in a correction of 0.80 feet.