What is a G-M Angle in navigation?

The G-M Angle, or Grid-Magnetic Angle, is a crucial concept in navigation that refers to the angular difference between grid north and magnetic north. In navigational contexts, grid north is defined based on the grid lines of a map, while magnetic north is determined by magnetic influences on a compass. Understanding this angle is essential for converting between grid bearings and magnetic bearings, allowing for accurate navigation in various terrains and conditions.

This concept is particularly significant in military operations, where precision in navigation can impact mission success. Navigators need to account for this angle to ensure that their directional readings are correctly interpreted and to maintain situational awareness on the battlefield. The terms used in the other options do not accurately reflect the established terminology or understanding of the G-M Angle in navigation.