377. You are underway on a course of 135° pgc at 15 knots, and you sight a lighthouse dead ahead at a range of 12.5 miles at 1145. What course would you steer to leave the lighthouse 3.0 miles off your port beam?

To achieve a 3.0 NM port beam distance from the lighthouse, steer 149 pgc. This requires a 14 course alteration to starboard from the original 135 heading, resulting in a closest approach distance of approximately 3.0 NM.