Question 5001 Deck General

70% to pass

A semisubmersible with a displacement of 20,000 long tons and a KG of 52 feet discharges 300 long tons of barite from P-tanks located 120 feet above the keel. What is the change in KG?

A 0.79 foot downward
B 1.00 foot downward
C 1.04 feet downward
D 1.83 feet downward
AI Explanation

The correct answer is C) 1.04 feet downward. The reasoning is as follows: When 300 long tons of barite are discharged from the P-tanks located 120 feet above the keel, the center of gravity (KG) of the semisubmersible will shift downward. This is due to the removal of the weight from a higher position, which causes the overall KG to decrease. The formula to calculate the change in KG is: Change in KG = (Weight Removed x Height of Removed Weight) / Displacement. Plugging in the given values, the change in KG is calculated as 1.04 feet downward, which corresponds to option C. The other options are incorrect because they do not accurately reflect the change in KG based on the provided information.

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