Question 5045 Deck General

70% to pass

On a semisubmersible drilling unit, increasing riser tension reduces _______________.

A GM
B list
C KG
D KM
AI Explanation

The correct answer is A) GM. Increasing riser tension on a semisubmersible drilling unit reduces the unit's GM (metacentric height), which is a measure of its stability. As the riser tension increases, it creates an overturning moment that effectively lowers the unit's GM, making it less stable. The other options are incorrect because they do not have a direct relationship with the impact of increased riser tension. List (B) is a measure of side-to-side tilt, KG (C) is the vertical center of gravity, and KM (D) is the vertical center of buoyancy, none of which are directly affected by changes in riser tension.

Ready to test your knowledge?

Take a Deck General Practice Exam

Pass Your Coast Guard Licensing Exams!

Study offline, track your progress, and simulate real exams with the Coast Guard Exams app