Question 5080 Deck General

The correct answer is D) 2.0 degrees. The largest angle each side of vertical that does not exceed the design limit of the legs is determined by the roll period of the vessel. With a roll period of 4 seconds, the corresponding maximum roll angle is 2.0 degrees each side of vertical, based on industry standards and regulations for offshore platform design. The other answer choices are incorrect because they do not align with the typical design limits for a vessel with a 4-second roll period. Higher angles, such as 6.3 degrees, 5.0 degrees, or 3.5 degrees, would likely exceed the structural design limits and could potentially compromise the stability and safety of the offshore platform.