Should I Use A Compass Or GPS For Backcountry Navigation?

Understanding Compass Navigation

When using a compass for navigation, it’s essential to understand the concept of declination, which is the difference between magnetic north and true north. This value varies depending on your location and changes over time. To ensure accurate readings, consult a declination chart or online resource for your specific location and update your compass accordingly. For example, if your declination is 10 degrees east, you’ll need to adjust your compass reading by 10 degrees to get an accurate bearing.

Map and Compass Orientation

To accurately use a compass for navigation, you need to ensure your map and compass are properly oriented. This involves aligning the compass needle with the magnetic needle and orienting the map to match the compass’s magnetic direction. To do this, place the map on a flat surface and align the map’s magnetic north indicator with the compass’s magnetic needle. Once aligned, you can use the compass to take bearings and navigate.

Triangulation and Navigation Techniques

Triangulation is a technique used to determine your location by measuring the angles and distances between two or more reference points. To use triangulation with a compass, identify two known reference points on your map and measure the angle between them. Take a bearing from your location to one of the reference points and then measure the angle between the bearing and the second reference point. By using the angles and distances between the reference points, you can calculate your location and navigate to your desired destination.