Question 4444 Deck General

The correct answer is C) 10.0 seconds. When a vessel's single amplitude roll angle is 2 degrees in 150 feet of water depth, the safe platform roll period for going on location should be longer than 10.0 seconds. This is based on the general guidance that the platform roll period should be at least 5 times the natural roll period of the vessel to avoid resonance and excessive rolling motions that could compromise the safety of the platform and its operations. The other options are incorrect because 0.5 seconds is too short, 5.0 seconds is too short, and 13.5 seconds, while longer than 10.0 seconds, is not the minimum required for this scenario.