Question 674Navigation General

70% to pass

Magnetic dip is a measurement of the angle between the _______________.

A geographic pole and the magnetic pole
B lubber's line and true north
C compass heading and the magnetic heading
D horizontal and the magnetic line of force
AI Explanation

The correct answer is D) horizontal and the magnetic line of force. Magnetic dip is a measurement of the angle between the horizontal and the magnetic line of force. This angle is caused by the Earth's magnetic field not being perfectly horizontal, but instead intersecting the Earth's surface at an angle. This angle of intersection is known as the magnetic dip, and it varies depending on the location on the Earth's surface. The other options are incorrect because they do not correctly describe what magnetic dip measures. Magnetic dip is not a measurement of the angle between the geographic and magnetic poles (A), the lubber's line and true north (B), or the compass heading and magnetic heading (C).

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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