Question 631Navigation General

The correct answer is D) there is no deviation on that heading. When the compass heading and the magnetic heading are the same, it means there is no deviation on that particular heading. Deviation is the difference between the compass heading and the magnetic heading, caused by the influence of nearby metals or magnetic fields on the compass. If the compass and magnetic headings are the same, it indicates that the compass is not being affected by any deviation and is providing an accurate reading. The other options are incorrect because A) the variation, which is the difference between true north and magnetic north, has not been offset, B) there is nothing inherently wrong with the compass, and C) the lack of deviation implies the compass is not being influenced by nearby metals.