Question 4641 Deck General

The correct answer is C) shifting the center of gravity (CG) off center. A flooded leg on a liftboat would adversely affect the vessel's stability by shifting the CG off center. This shift in the CG would decrease the vessel's righting moment, making it more susceptible to capsizing. The other answer choices are incorrect because: A) increasing the reserve buoyancy would actually improve stability, not adversely affect it; B) decreasing the vessel's displacement would not directly impact stability; and D) increasing the righting moment would improve stability, not adversely affect it.