Question 4810Deck 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 74'-09"; Port Aft 78'-09"; Starboard Forward 69'-09"; and Starboard Aft 73'-09". What is the trim?
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.
Related Questions
#4808 What is the new location of the longitudinal center of gravity if 200 short tons are discharged from 30 feet forward of amidships on a MODU with LCG 1.5 feet forward of amidships, and displacement 9,000 short tons? #4809 What is the shift in the longitudinal center of gravity if 200 short tons are discharged from 30 feet forward of amidships on a MODU with LCG 1.5 feet forward of amidships, and displacement 9,000 short tons? #4811 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? #4812 The righting moment created by a MODU that displaces 15,000 tons with a righting arm (GZ) of 0.02 foot is _______________.#4813 A semisubmersible displacing 18,000 long tons has an LCG 2 feet forward of amidships. Bulk, weighing 400 long tons, is discharged from P-tanks located 50.8 feet aft of amidships. What is the new LCG?