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. Which course should you steer at 10 knots to have the maximum CPA?

Question

You are underway on course 050&deg;T and your maximum speed is 10 knots. The eye of a hurricane bears 100&deg;T, 90 miles from your position. The hurricane is moving towards 285&deg;T at 19 knots. Which course should you steer at 10 knots to have the maximum CPA?

Accepted Answer

Option B: 226&deg;. Determining the optimal evasion course to maximize CPA from a tropical cyclone requires constructing a relative motion vector diagram per Bowditch. Steering 226T at your maximum 10-knot speed maximizes separation from the storm center moving toward 285T at 19 knots.

You are underway on course 050&deg;T and your maximum speed is 10 knots. The eye of a hurricane bears 100&deg;T, 90 miles from your position. The hurricane is moving towards 285&deg;T at 19 knots. Which course should you steer at 10 knots to have the maximum CPA?

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. Which course should you steer at 10 knots to have the maximum CPA?