What does the dashed line in grid convergence indicate?

The dashed line in grid convergence signifies the connection between true north and grid north. Understanding the significance of this line is crucial for navigation and map reading, particularly in military operations where precise bearings and orientations are essential.

Grid north is based on the grid lines of a map, while true north points directly to the North Pole. The angle between these two is known as convergence, and that dashed line visually represents this relationship on the map. Knowing the difference between true north and grid north enables effective navigation, ensuring that troops can accurately orient themselves and make precise movements or targeting decisions.

In the context of military operations, such as those conducted by the 1st Battalion, 67th Armor Regiment, understanding grid convergence can significantly affect mission success. Properly interpreting this line aids in calculating adjustments that may be necessary when converting between different navigation systems or when using maps for artillery or operational planning.