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- Master & Chief Mate (Oceans or Near Coastal (Unlimited Tonnage)) »
- Q109 - Navigation Problems: Oceans
274. On 25 August your 1926 zone time DR position is LAT 24° 17.0' S, LONG 05° 47.0' W. At that time, you observe Fomalhaut bearing 117° psc. The chronometer reads 07h 26m 52s, and the chronometer error is 00m 15s fast. The variation is 1.5° E. What is the deviation of the standard magnetic compass?
The deviation is 2.8 W. The true azimuth of Fomalhaut was calculated to be 115.7 T. After applying the 1.5 E variation, the magnetic bearing is 114.2 M. The observed compass bearing of 117 psc, exceeds the magnetic bearing, indicating a west deviation of 2.8.
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