Question 5014 Deck General

70% to pass

Because there is a possibility of fuel oil being discharged overboard from a full fuel oil tank, it is decided to transfer 25 kips from tank 14 to tank 13. See COASTAL DRILLER Sample Load Form Number 1 (Rig Move). What would be the change in longitudinal free surface moments?

A 1492 ft-kips increase
B 1034 ft-kips increase
C 674 ft-kips increase
D 404 ft-kips increase
AI Explanation

The correct answer is C) 674 ft-kips increase. The change in longitudinal free surface moments when transferring 25 kips from tank 14 to tank 13 is an increase of 674 ft-kips. This is because the longitudinal free surface moment is directly proportional to the mass of the liquid in the tank and the square of the longitudinal distance between the tank and the vessel's longitudinal center of gravity. By moving 25 kips from tank 14 to tank 13, the longitudinal free surface moment increases due to the change in the mass and position of the liquid. The other options are incorrect because they do not accurately reflect the change in longitudinal free surface moments based on the given information.

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