While on a course of 216°pgc, a light bears 12° on the port bow at a distance of 11.2 miles. Which course should you steer to pass 2 miles abeam of the light leaving it to port?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 214°pgc
Using the principles of relative motion and triangle of velocities, the vessel must adjust the heading to account for the desired passing distance. By applying the geometry of the relative bearing and distance, a 2-degree change to the right (214 degrees pgc) achieves the required 2-mile passing distance.
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