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- Q186 - Navigation Problems: Oceans
27. On 23 August in DR position LAT 24°07.0'N, LONG 136°16.0'E, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 074.5°psc. The chronometer reads 08h 56m 19s and is 02m 34s fast. Variation in the area is 2°W. What is the deviation of the magnetic compass?
The compass deviation is 4.5E. The true bearing at rising (approximately 077T) differs from the observed compass bearing (074.5psc) by 2.5, and accounting for the 2W variation results in a 4.5E deviation.
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