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- Q211 - Navigation General: Near Coastal
265. You are underway on course 050°T and your maximum speed is 11 knots. The eye of a hurricane bears 070°T, 80 miles from your position. The hurricane is moving towards 270°T at 19 knots. If you maneuver at 11 knots to avoid the hurricane, what could be the maximum CPA?
The maximum closest approach to a hurricane is determined by the relative motion between the ship and the hurricane, calculated using the tangent geometry of the hurricane's velocity circle. This results in a maximum CPA of 66 miles.
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