Deck Misc (Supplementary) USCG Question #120 (Set 1)

On 8 November your 1731 zone time DR position is LAT 27°16.0' N, LONG 137°25.0' W. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?

Official USCG Answer & Rule Citation

Correct Answer: Option D — Alphecca, Fomalhaut, Schedar

Ideal twilight star selection requires balanced azimuth distribution, suitable altitudes avoiding horizon haze and zenith distortion, and bright navigational stars for reliable sextant observations.

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