When elevating the COASTAL DRILLER in 100 feet of water, the unit should be placed at an air gap of __________.
Official USCG Answer & Rule Citation
Correct Answer: Option A — 35 feet
Air gap requirements for mobile offshore drilling units are specified in the operating manual to clear crest heights of design storm waves. For the COASTAL DRILLER in 100 feet of water, the required operational air gap is strictly set at 35 feet.
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