On 22 July your 0442 DR position is LAT 26°35.6' N, LONG 22°16.7' W. You observe an unidentified star bearing 091°T at an observed altitude (Ho) of 64°35.2'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?
Official USCG Answer & Rule Citation
Correct Answer: Option C — Hamal
Calculate the star's GHA and Declination for the corrected GMT. Using the DR position, determine the Hc and Zn. The observed altitude of 64°35.2' and bearing of 091°T align with the calculated values for Hamal, confirming the star's identity through standard celestial navigation reduction methods found in Bowditch.
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