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- Q135 - Navigation Problems: Oceans
207. On 2 January your vessel's 1948 zone time position is LAT 21° 42' S, LONG 39° 12' W, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 260° per standard magnetic compass. Variation in the area is 19° W. The chronometer reads 10h 44m 36s and is 03m 24s slow. What is the deviation of the standard magnetic compass?
The standard magnetic compass deviation is calculated by subtracting the true bearing and variation from the observed compass bearing, resulting in a deviation of 4.3 East.
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