Safety & Environmental Protection (Deck) USCG Question #3307 (Set 94)

The SS AMERICAN MARINER is ready to bunker with drafts of FWD 11'-01", AFT 14'-07". After all bunkers are on board, soundings indicate the tonnages shown in table ST-0158 below. Use the white pages of The Stability Data Reference Book to determine the free surface correction.

Official USCG Answer & Rule Citation

Correct Answer: Option B — 1.30 feet

Stability data books provide the necessary moments of inertia for tank configurations. By applying the data from table ST-0158 to the vessel's displacement at the specified draft, the total free surface correction is determined to be 1.30 feet, which must be subtracted from the solid GM.

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