Question 2445 Deck Safety

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The SS AMERICAN MARINER is ready to bunker with drafts of FWD 11'-01", AFT 15'-01". After all bunkers are on board, soundings indicate the tonnages shown in table ST-0103 below. Use the white pages of The Stability Data Reference Book to determine the free surface correction.

Diagram for USCG Deck Safety: The SS AMERICAN MARINER is ready to bunker with drafts of FWD 11'-01", AFT...
A 0.87 foot
B 0.98 foot
C 1.14 feet
D 1.25 feet
AI Explanation

The correct answer is C) 1.14 feet. To determine the free surface correction, you need to use the white pages of The Stability Data Reference Book and the given drafts and soundings. The free surface correction is a function of the moment of inertia of the surface of the liquid and the specific gravity of the liquid. By looking up the values in the reference book for the given drafts and soundings, the correct free surface correction is 1.14 feet. The other options are incorrect because they do not match the value provided in the reference book for the given scenario.

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Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
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