It is proposed to moor the DEEP DRILLER in 600 feet of water in a region in which the effective wind velocity could reach 80 knots, significant wave height could reach 30 feet, and the current could be 1.5 knots. If these conditions occurred at the same time from the bow, the environmental force due to the wind would be __________.
Official USCG Answer & Rule Citation
Correct Answer: Option B — 475 kips
Environmental force calculations for floating offshore installations per Marine Operations Manual guidelines apply shape coefficients to projected areas. For an 80-knot wind, 30-foot wave, and 1.5-knot current from the bow, the resulting wind force component on the structure evaluates to 475 kips.
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