Navigation Problems USCG Question #1839 (Set 55)

The wind at Frying Pan shoals has been northwesterly at an average velocity of 22 mph. The predicted set and drift of the rotary current are 125° at 0.6 knot. What current should you expect?

Official USCG Answer & Rule Citation

Correct Answer: Option A — 119° at 0.9 knot

Calculate the resultant current by applying the vector influence of the northwesterly wind to the predicted rotary current of 125 degrees at 0.6 knot. The resulting vector, accounting for wind-induced drift and set, is 119 degrees at 0.9 knot, consistent with standard navigational current tables.

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