On 22 February your 2045 ZT position is LAT 33°19'N, LONG 52°06'W. You observe Polaris bearing 358.1°pgc. At the time of the observation the helmsman noted that he was heading 048°pgc and 065°psc. The variation is 19°W. What is the deviation for that heading?

Question

On 22 February your 2045 ZT position is LAT 33&deg;19'N, LONG 52&deg;06'W. You observe Polaris bearing 358.1&deg;pgc. At the time of the observation the helmsman noted that he was heading 048&deg;pgc and 065&deg;psc. The variation is 19&deg;W. What is the deviation for that heading?

Accepted Answer

Option B: 3&deg;E. Determine the true bearing of Polaris using the LHA of Aries. With a gyro bearing of 358.1°pgc and calculated gyro error, find the true bearing. Convert true to magnetic using 19°W variation. Comparing the magnetic bearing to the compass bearing of 065°psc results in a deviation of 3°E.

On 22 February your 2045 ZT position is LAT 33&deg;19'N, LONG 52&deg;06'W. You observe Polaris bearing 358.1&deg;pgc. At the time of the observation the helmsman noted that he was heading 048&deg;pgc and 065&deg;psc. The variation is 19&deg;W. What is the deviation for that heading?

On 22 February your 2045 ZT position is LAT 33°19'N, LONG 52°06'W. You observe Polaris bearing 358.1°pgc. At the time of the observation the helmsman noted that he was heading 048°pgc and 065°psc. The variation is 19°W. What is the deviation for that heading?