You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 080°T, 100 miles from your position. The hurricane is moving towards 265°T at 22 knots. If you maneuver at 12 knots to avoid the hurricane, what could be the maximum CPA?
Official USCG Answer & Rule Citation
Correct Answer: Option C — 63 miles
Applying Bowditch relative motion principles for hurricane avoidance, vectoring own vessel at 12 knots against a storm tracking towards 265T at 22 knots from bearing 080T at 100 miles calculates to a maximum achievable closest point of approach (CPA) of 63 miles.
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