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- Q127 - Navigation Problems: Oceans
67. On 12 June at 0919 zone time, your position is LAT 26°52'N, LONG 84°34'W. The chronometer reads 03h 17m 00s. Chronometer error is 01m 40s slow. At that time, an azimuth of the Sun is obtained. The bearing is 089.5° per standard magnetic compass. Variation for this area is 4.5°E. What is the deviation of the standard magnetic compass?
The compass deviation is determined by comparing the true azimuth, adjusted for variation, with the observed compass bearing. The compass bearing (089.5) is less than the magnetic bearing (094.7), indicating a westward deviation of 5.2.
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