Question 4403 Deck General

70% to pass

The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). What is the new height of the center of gravity corrected for longitudinal free surface effects if the entire contents of Salt Water Ballast Tanks 1P and 1S are discharged?

A 67.04 feet
B 68.02 feet
C 68.72 feet
D 69.21 feet
AI Explanation

The correct answer is D) 69.21 feet. When the contents of the Salt Water Ballast Tanks 1P and 1S are discharged, the height of the center of gravity will increase due to the reduction in free surface effect. The formula to calculate the new height of the center of gravity corrected for longitudinal free surface effects takes into account the change in the moment of inertia of the free surfaces, which in this case would result in an increase in the height of the center of gravity to 69.21 feet. The other options are incorrect because they do not accurately reflect the change in the height of the center of gravity after the discharge of the ballast tanks.

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