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- Master & Chief Mate (Oceans or Near Coastal (Unlimited Tonnage)) »
- Q109 - Navigation Problems: Oceans
225. On 22 July your 1759 DR position is LAT 24° 50.2' S, LONG 05° 16.0' E. You observe an unidentified star bearing 293° T at an observed altitude (Ho) of 17° 52.8'. The chronometer reads 06h 01m 31s, and is 02m 15s fast. What star did you observe?
Regulus is the only star whose position, when combined with the ship's DR latitude/longitude and corrected for chronometer error, produces a computed altitude and azimuth matching the observed values.
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