Question 4444Deck General70% to pass
While in 150 feet water depth when the single amplitude roll angle of the COASTAL DRILLER is 2 degrees, the safe platform roll period for going on location should be longer than _______________.
AI Explanation
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.
Related Questions
#4442 While the COASTAL DRILLER is in normal transit, the roll period is 8 seconds. What would be the limiting angle of pitch which does not exceed the design limits of the legs? #4443 While in 150 feet water depth when the single amplitude roll angle of the COASTAL DRILLER is 1 degree, the safe platform roll period for going on location should be longer than _______________.#4445 While in ocean transit, the COASTAL DRILLER has a roll period of 9 seconds. What is the largest angle each side of vertical that does not exceed the design limits of the legs in good weather? #4446 While the COASTAL DRILLER is in a normal transit, the roll period is 9 seconds. What is the limiting angle of roll which does not exceed the design limits of the legs? #4447 The COASTAL DRILLER, while in normal transit, experiences a single amplitude roll of 6 degrees. What is the minimum roll period which does not exceed design limits of the legs?