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- Q127 - Navigation Problems: Oceans
319. On May 20 your 2300, (ZD +4), DR position is LAT 42° 07' N, LONG 81° 02' W. At that time, you observe Polaris bearing 012° psc. The chronometer time of the observation is 03h 02m 23s, and the chronometer is 1m 17s fast. The variation is 9.5° W. What is the deviation of the magnetic compass?
The deviation of the magnetic compass is 2.7 W, calculated by subtracting the variation from the compass error (12.2 W).
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