Navigation Problems USCG Question #111 (Set 4)

On 3 February your 0550 zone time DR position is LAT 26°16.0' N, LONG 112°05.0' W. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?

Official USCG Answer & Rule Citation

Correct Answer: Option A — Spica, Kochab, Rasalhague

Spica, Kochab, and Rasalhague provide the ideal 120-degree azimuthal separation required for a strong fix. These bodies are selected based on their brightness and favorable altitude, ensuring they are easily identifiable and provide the best geometric intersection for lines of position at the specified latitude and time.

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