You are underway on course 128°T at a speed of 17.6 knots. You sight a daymark bearing 126°T at a radar range of 4.3 miles at 1649. If you change course at 1654, what is the course to steer to leave the daymark abeam to starboard at 0.5 mile?

Correct Answer: Option D — 113°T

Calculate the vessel's position at 1654 after 5 minutes of travel at 17.6 knots (1.47 miles). Using the radar range and bearing, determine the relative motion required to achieve a 0.5-mile CPA to starboard. Trigonometric resolution of the triangle confirms 113°T as the required course.