Question 4810 Deck General
70% to passA semisubmersible, 200 feet in length between draft marks with the LCF 10 feet aft of amidships, records the following drafts: Port Forward 74'-09"; Port Aft 78'-09"; Starboard Forward 69'-09"; and Starboard Aft 73'-09". What is the trim?
A
-1.0 foot
B
-2.0 feet
C
-4.0 feet
D
-8.0 feet
AI Explanation
The correct answer is C) -4.0 feet. To calculate the trim, we need to find the difference between the draft readings at the forward and aft ends of the vessel. The port forward draft is 74'-09" and the port aft draft is 78'-09", resulting in a difference of 4 feet. Since the aft draft is greater than the forward draft, the vessel has a negative trim of -4.0 feet. The other answer choices are incorrect because: A) -1.0 foot does not match the calculated trim of -4.0 feet, B) -2.0 feet is too small, and D) -8.0 feet is too large compared to the given draft readings.
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