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- Q135 - Navigation Problems: Oceans
372. On 7 December your 0350 ZT position is LAT 35°42'N, LONG 17°38'E. You observe Polaris bearing 359.7°pgc. At the time of the observation the helmsman noted that he was heading 016°pgc and 014°psc. The variation is 1°E. What is the deviation for that heading?
The deviation is 0.3E because the magnetic heading, calculated from the true heading derived using Polaris, is 0.3 greater than the standard compass heading.
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