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?

Correct Answer: Option D — 0.3°E

Polaris observed bearing of 359.7°pgc indicates a 0.3° gyro error relative to true north. Applying the 1°E variation to the true heading converts it to a magnetic heading, which is then compared against the standard compass heading (014°psc) to derive a deviation of 0.3°E.