The wind at Frying Pan shoals has been south-southwesterly at an average velocity of 30 mph. The predicted set and drift of the rotary current are 232° at 0.8 knot. What current should you expect?

Correct Answer: Option B — 224° at 0.4 knot

The current is determined by vector addition of the predicted rotary current and the wind-driven current component. Applying the wind effect (30 mph, SSW) to the predicted set and drift (232° at 0.8 knot) results in a resultant current of 224° at 0.4 knot.