Deviation is the angle between the __________.
Official USCG Answer & Rule Citation
Correct Answer: Option C — magnetic meridian and the axis of the compass card
Deviation is the horizontal angle between the magnetic meridian (the direction of the Earth's magnetic field) and the axis of the compass card (the direction the compass needle points). This is a fundamental definition in navigation, as outlined in Bowditch, Volume I, Chapter 6.
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