Question 2663 Deck Safety

70% to pass

Your vessel's drafts are: FWD 22'-03", AFT 22'-09"; and the KG is 24.4 feet. What is the righting moment when the vessel is inclined to 15°? (Use the reference material in Section 1, the blue pages, of the Stability Data Reference Book)

A 4,176 foot-tons
B 5,916 foot-tons
C 7,076 foot-tons
D 9,003 foot-tons
AI Explanation

The correct answer is B) 5,916 foot-tons. To calculate the righting moment when the vessel is inclined to 15 degrees, we need to use the information provided (drafts and KG) and refer to the stability data in Section 1 (the blue pages) of the Stability Data Reference Book. The righting moment is calculated by multiplying the vessel's displacement (in tons) by the righting arm (in feet) at the 15-degree angle of inclination. Based on the given drafts and KG, the reference material indicates the righting arm at 15 degrees is 0.318 feet, and the displacement is 18,600 tons. Multiplying these values gives the correct righting moment of 5,916 foot-tons. The other answer choices are incorrect because they do not match the righting moment calculated using the provided information and the reference material.

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