General Navigation USCG Question #1837 (Set 57)

You take a bearing of 191° and 313° to two objects. Which bearing of a third object will give the best fix?

Official USCG Answer & Rule Citation

Correct Answer: Option B — 069°

According to Bowditch navigational geometry, a three-bearing fix is most accurate when the azimuths are evenly spaced by roughly 60 to 120 degrees. Bearings at 191°, 313°, and 069° provide balanced angular distribution, minimizing geometrical dilution of precision.

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