The COASTAL DRILLER is elevated in 250 feet of water, experiencing 2 knots current and 70 knot winds. With a maximum leg reaction of 5,760 kips, the maximum wave height for drilling is __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — 20 feet
Entering environmental and structural parameters into the unit's operational envelope charts—specifically 250 feet of water depth, 2 knots current, 70-knot winds, and a 5,760 kips leg reaction—restricts the maximum allowable wave height for safe drilling operations to 20 feet.
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