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- Q127 - Navigation Problems: Oceans
166. 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?
Miaplacidus is the correct answer because its predicted altitude and bearing, calculated using the Nautical Almanac and sight reduction tables for the given time and position, closely match the observed altitude of 34 30.0' and bearing of 159 T.
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