A 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?

Correct Answer: Option C — -4.0 feet

Draft is averaged port and starboard for forward and aft marks. Forward average is (74.75 + 69.75) / 2 = 72.25 ft. Aft average is (78.75 + 73.75) / 2 = 76.25 ft. Trim is aft draft minus forward draft: 76.25 - 72.25 = +4.0 ft by the stern, represented as -4.0 per convention.