Question 4875Deck General70% to pass
A jack-up 180 feet in length with the LCF at 120 feet AF0 has a true mean draft (draft at LCF) of 10 feet. If the trim is 3 feet by the stern, what is the draft at the stern?
AI Explanation
The correct answer is C) 11.0 feet.
The key to solving this problem is understanding the relationship between draft, trim, and the location of the LCF (Longitudinal Center of Flotation). Since the true mean draft is given as 10 feet at the LCF, and the trim is 3 feet by the stern, the draft at the stern can be calculated by adding the trim to the mean draft.
Specifically, if the true mean draft is 10 feet and the trim is 3 feet by the stern, the draft at the stern will be 10 feet + 3 feet = 11 feet. This makes C) 11.0 feet the correct answer.
The other answer choices are incorrect because they do not properly account for the given trim of 3 feet by the stern.
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