You are underway on course 340°T at a speed of 14.8 knots. You sight a buoy bearing 342°T at a radar range of 4.8 miles at 1422. If you change course at 1428, what is the true course to steer to leave the buoy abeam to port at 1.0 mile?

Correct Answer: Option B — 001°T

At 14.8 knots, the vessel travels 1.48 miles in 6 minutes. Using the initial radar range and bearing, calculate the relative motion required to achieve a 1.0-mile CPA to port. Plotting the triangle of velocities confirms 001°T is the required heading to clear the buoy.