You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 284°T at 43 miles from you. What is the course to steer and running time at 16 knots to intercept vessel A?

Correct Answer: Option D — 303°, 2h 32m

Intercept vector calculations establish the required course and speed triangle between own ship (16 knots) and the target vessel (5.5 knots on 033°T). Solving the relative motion triangle results in an intercept course of 303°T and a running time of 2 hours 32 minutes.