Question 4306Deck General70% to pass
While in ocean transit, the COASTAL DRILLER experiences a single amplitude roll of 5 degrees. What is the minimum roll period that does not exceed the design limits of the legs?
AI Explanation
The correct answer is D) 7.2 seconds.
The minimum roll period that does not exceed the design limits of the legs for a single amplitude roll of 5 degrees is 7.2 seconds. This is based on the principle that the roll period should be long enough to prevent excessive dynamic forces on the offshore unit's legs, which could potentially exceed the design limits.
The other options are incorrect because 2.7 seconds is too short, 4.0 seconds is still too short, and 6.5 seconds, while closer, does not fully satisfy the requirement to stay within the design limits for a 5-degree single amplitude roll.
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