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- Q127 - Navigation Problems: Oceans
239. On 28 September in DR position LAT 27° 16.7' S, LONG 113° 27.2' W, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 273° psc. The chronometer reads 01h 17m 26s and is 01m 49s slow. Variation in the area is 6° W. What is the deviation of the standard magnetic compass?
The Sun's true bearing was calculated as 267.4 using the latitude and declination, and comparing this to the observed compass bearing of 273 with a variation of 6 W yields a compass deviation of 0.4 East.
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