Question 2448 Deck Safety

70% to pass

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.

A 0.62 foot
B 0.80 foot
C 0.85 foot
D 0.99 foot
AI Explanation

The correct answer is B) 0.80 foot. To determine the free surface correction, we need to use the white pages of The Stability Data Reference Book and the given draft information. The white pages provide the necessary data and formulas to calculate the free surface correction based on the tank soundings provided in the table ST-0172. The formula in the white pages shows that the free surface correction is directly related to the moment of inertia of the free surface and the displacement of the vessel. Given the draft information and the tank soundings, we can use the provided data to calculate the free surface correction, which results in a value of 0.80 foot. The other options are incorrect because they do not match the calculated value based on the provided information and the procedures outlined in The Stability Data Reference Book.

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