Question 10Navigation General

The correct answer is A) the center of the compass rose on a chart of the area. The annual change in variation for an area can be found in the center of the compass rose on a nautical chart for that specific area. The compass rose provides the current magnetic variation as well as the annual change in variation, which is critical information for properly adjusting a magnetic compass. The other options are incorrect because: B) the handbook for Magnetic Compass Adjustment, Pub 226 does not contain the annual change in variation for specific areas, C) the compass deviation table only provides the deviation for a particular vessel, not the annual variation change, and D) variation does in fact change over time due to the movement of the Earth's magnetic poles.