Question 4811Deck General70% to pass
A semisubmersible, 200 feet in length between draft marks with the LCF 10 feet aft of amidships, records the following drafts: Port Forward 64'-09"; Port Aft 68'-09"; Starboard Forward 59'-09"; and Starboard Aft 63'-09". What is the trim?
AI Explanation
The correct answer is D) 4 feet by the stern.
To calculate the trim, you need to find the difference between the drafts at the forward and aft draft marks. In this case, the port forward draft is 64'9" and the port aft draft is 68'9", a difference of 4 feet. The starboard forward draft is 59'9" and the starboard aft draft is 63'9", also a difference of 4 feet. Since both sets of drafts show a 4-foot difference, the vessel is trimmed 4 feet by the stern.
The other answer choices are incorrect because option A) 8 feet by the stern is too much, option B) 2 feet by the stern is too little, and option C) 4 feet by the head is the opposite of the actual trim direction.
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