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 __________.

Correct Answer: Option C — 10.0 seconds

Evaluating dynamic stability during pre-load and location-settling operations involves checking natural roll periods against operational thresholds. For a 2-degree single amplitude roll in 150 feet of water, the operating manual requires a safe platform roll period greater than 10.0 seconds to avoid excessive structural impact.