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?

Question

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

Accepted Answer

Option B: 1.5&deg;W. Polaris bearing 000.2°pgc indicates a True bearing of 000.2°. With 20°W variation, the Magnetic bearing is 20.2°. The compass heading is 244°psc. The deviation is found by comparing the magnetic bearing to the compass heading, resulting in 1.5°W, adhering to standard compass error correction procedures.

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

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?