You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°E. The variation is 8°W. Find the deviation on a gyro heading of 196°.

Correct Answer: Option D — 0.0°

Gyro heading 196° with 2°E error equals 198° true. With 8°W variation, the magnetic heading is 206°. Since the magnetic compass heading is 206° and the magnetic heading is 206°, the deviation is 0.0°. This confirms the compass is aligned with the magnetic meridian at this specific heading.