Question 4982 Deck General

70% to pass

The COASTAL DRILLER, with no trim, is at a true mean draft of 10 feet and 10 inches. TM is -6,800 ft-kips. Using only tanks 1, 25, and 26, how many kips of drill water must be transferred to level the jack-up?

A Transfer 53.1 kips each from 25 and 26 forward to 1

B Transfer 200 kips from 25 to 26

C Transfer 100 kips from 26 to 25

D Transfer 100 kips from 25 to 26

AI Explanation

The correct answer is D) Transfer 100 kips from 25 to 26. To level the jack-up, the goal is to transfer ballast to adjust the trim moment (TM) to zero. Since the TM is given as -6,800 ft-kips, we need to add 6,800 ft-kips to the system to level the vessel. By transferring 100 kips from tank 25 to tank 26, we effectively increase the forward moment, which counteracts the negative trim moment and brings the TM to zero, leveling the jack-up. The other options are incorrect because they either do not provide the necessary 6,800 ft-kips of trim adjustment or involve transferring ballast in the wrong direction.

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