What information must be available to use the Allowable Wind and Wave Charts for the COASTAL DRILLER?
Official USCG Answer & Rule Citation
Correct Answer: Option A — Water depth
Operating mobile offshore drilling units requires strict adherence to stability operational manuals. For the COASTAL DRILLER, evaluating environmental loads via Allowable Wind and Wave Charts specifically mandates precise local water depth data to account for variable air gap and bottom clearance limitations under Title 46 CFR.
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