Route Color Coding


All route and navigation lines displayed on the chartplotter are only intended to provide general route guidance or to identify proper channels, and are not intended to be precisely followed. Always defer to the navaids and conditions on the water when navigating to avoid groundings or hazards that could result in vessel damage, personal injury, or death.


The Auto Guidance feature is based on electronic chart information. That data does not ensure obstacle and bottom clearance. Carefully compare the course to all visual sightings, and avoid any land, shallow water, or other obstacles that may be in your path.


When using Go To, a direct course and a corrected course may pass over land or shallow water. Use visual sightings, and steer to avoid land, shallow water, and other dangerous objects.

As you navigate, the color of the route might change to indicate when you should take caution.


Default route/course line.

Thin purple

Dynamically corrected course, indicating you are off course.


Caution! This segment of the route may be near the thresholds of the Auto Guidance depth and height settings. For example, the route segment is orange when the route crosses under a bridge or is in potentially shallow waters. Garmin Navionics+™ and Garmin Navionics Vision+™ charts only.

Red striped

Warning! This segment of the route might be unsafe, based on the Auto Guidance depth and height settings. For example, the roue segment is red striped when the route crosses under a very low bridge or is in shallow waters. This line is red striped in Garmin Navionics+ and Garmin Navionics Vision+ charts only; it is magenta and gray striped in previous versions of the charts.


Cannot calculate this segment of the route due to land or other obstacles, or there is no chart coverage area in that location.

GUID-25CCEC48-337E-47C0-8B89-5C35CCDB65AC v25
October 2023