Navigation Problems USCG Question #647 (Set 19)

While on a course of 192°T, a light bears 11° on the starboard bow at a distance of 12.7 miles. What course should you steer to pass 3 miles abeam of the light leaving it to starboard?

Official USCG Answer & Rule Citation

Correct Answer: Option D — 189°T

Solving the relative motion triangle for a running fix or passing distance involves plotting the initial bearing (192° + 11° = 203°T) and applying right-triangle trigonometric relations for the desired 3-mile abeam clearance, resulting in a required course of 189°T.

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