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- Q134 - Navigation Problems: Near Coastal
107. On 12 September your 0736 zone time DR position is LAT 28°34.0'S, LONG 174°49.0'E. At that time, you observe the Sun bearing 084° per standard magnetic compass (psc). The chronometer reads 07h 38m 11s, and the chronometer error is 01m 46s fast. The variation is 11°W. What is the deviation of the standard magnetic compass?
The deviation is 3.2E because the true azimuth of the Sun is 076.2T, which, after applying the 11W variation, results in a magnetic bearing 3.2 greater than the observed compass bearing of 084.
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