You are underway on course 050°T and your maximum speed is 10 knots. The eye of a hurricane bears 100°T, 90 miles from your position. The hurricane is moving towards 285°T at 19 knots. If you maneuver at 10 knots to avoid the hurricane, what could be the maximum CPA?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 53 miles
Using relative motion vector analysis based on Bowditch hurricane evasion principles, maneuvering at maximum available speed yields a theoretical maximum Closest Point of Approach (CPA) of 53 miles.
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