You are underway on course 050°T and your maximum speed is 13 knots. The eye of a hurricane bears 100°T, 120 miles from your position. The hurricane is moving towards 275°T at 25 knots. If you maneuver at 13 knots to avoid the hurricane, what could be the maximum CPA?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 72 miles
Using relative motion triangle plotting for hurricane evasion per Bowditch procedures, vectoring your vessel at 13 knots against a storm moving at 275T at 25 knots from bearing 100T at 120 miles generates a maximum achievable closest point of approach (CPA) of 72 miles.
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