Question 10Navigation General70% to pass
The annual change in variation for an area can be found in _______________.
AI Explanation
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.
Related Questions
#8 At the outbreak of war your ship is caught in an enemy port. Which statement is FALSE? #9 All persons or vessels within the lock area, including the lock approach channels, come under the authority of the _______________.#11 The National Geospatial-Intelligence Agency (formerly the National Imagery and Mapping Agency) would produce a chart of the coast of _______________.#12 The Light List indicates that a light has a nominal range of 13 miles and is 36 feet high (11.0 meters). If the visibility is 7.0 miles and your height of eye is 25 feet (7.6 meters), at what approximate distance will you sight the light? #13 Which compensates for induced magnetism in the horizontal soft iron of a vessel?