The wind in the vicinity of Nantucket Shoals Light has been southerly at an average speed of 23 mph. The predicted set and drift of the rotary current is 225° at 0.8 knot. What current should you expect?

Correct Answer: Option D — 235° at 0.5 knot

Nantucket Shoals wind-current corrections combine local wind velocity vectors with predicted rotary current tables using standard vector resolution principles from Bowditch to determine the resultant set and drift.