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- Q141 - Navigation Problems: Near Coastal
100. On 19 June your vessel's 0523 ZT DR position is LAT 25° 12.0' N, LONG 123° 14.0' W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 052.0° per standard compass. Variation in the area is 15° E. The chronometer reads 01h 21m 58s and is 01m 18s slow. What is the deviation of the standard compass?
The Sun's true bearing was 064T. Applying the 15 E variation yields a magnetic bearing of 049M. The observed compass bearing was 052 per standard compass, resulting in a deviation of 3.3 W.
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