On 5 February your 2320 ZT position is LAT 52°28'N, LONG 23°48'W. You observe Polaris bearing 000.2°pgc. At the time of the observation the helmsman noted that he was heading 224°pgc and 244°psc. The variation is 20°W. What is the deviation for that heading?

Correct Answer: Option D — 1.5°W

Polaris observations yield true bearing directly when corrected for local hour angle. Comparing the true bearing to the standard compass heading using variation and deviation formulas establishes the compass error, resulting in a calculated deviation of 1.5°W.