On 22 February your 1857 ZT DR position is LAT 23°46.0' S, LONG 93°16.5' E. You observe an unidentified star bearing 159°T, at an observed altitude (Ho) of 34°30.0'. The chronometer reads 01h 00m 35s and is 03m 25s fast. What star did you observe?
Official USCG Answer & Rule Citation
Correct Answer: Option A — Miaplacidus
Comparing observed altitude and azimuth against tabulated values in Pub. No. 229 or 249 using computed Local Hour Angle confirms the specific navigational star matching the observed navigational sights.
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