The SS AMERICAN MARINER is ready to bunker with drafts of FWD 19'-00", AFT 24'-00". After all bunkers are on board, soundings indicate the tonnages shown in table ST-0171 below. Use the white pages of The Stability Data Reference Book to determine the free surface correction.

Correct Answer: Option C — 0.85 foot

Accurate stability requires applying the free surface correction based on current tank levels. Referencing the stability data tables for the SS AMERICAN MARINER with the provided bunker soundings, the sum of the free surface moments divided by the displacement results in a correction of 0.85 feet.