Navigation Problems USCG Question #639 (Set 19)

While on a course of 349°T, a light bears 13° on your starboard bow at a distance of 10.8 miles. What course should you steer to pass 2.5 miles abeam of the light, leaving it to starboard?

Official USCG Answer & Rule Citation

Correct Answer: Option D — 349°

The light bears 13° on the starboard bow (course 349° + 13° = 002°T) at 10.8 miles. To pass 2.5 miles abeam, standard parallel-sailing and triangle geometry dictate that maintaining the present heading of 349°T allows the vessel to achieve the exact requested passing distance without course alteration.

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