Question 629Navigation General70% to pass
Magnetic compass deviation _______________.
AI Explanation
The correct answer is B) the angular difference between magnetic north and compass north.
Magnetic compass deviation refers to the difference between the direction indicated by the magnetic compass and the true (geographic) north direction. This deviation is caused by the influence of the ship's own magnetic fields on the compass needle, and it can vary depending on the ship's heading and location.
The other options are incorrect:
A) Magnetic compass deviation does not vary depending on the bearing used, but rather remains a constant value for a given ship and location.
C) The compass rose on nautical charts shows the angular difference between true north and magnetic north, not the deviation of the ship's compass.
D) The angular difference between geographic and magnetic meridians is called magnetic variation, which is different from magnetic compass deviation.
Related Questions
#627 The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval? #628 The total magnetic effects which cause deviation of a vessel's compass can be broken down into a series of components which are referred to as _______________.#630 If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism _______________.#631 If the compass heading and the magnetic heading are the same then _______________.#632 If the magnetic heading is greater than the compass heading, what direction is the deviation?