When you connect your chartplotter to an optional Garmin^® marine radar, you can use the Radar overlay to overlay radar information on the Navigation chart or on the Fishing chart.

The Radar overlay superimposes radar information on the Navigation chart or the Fishing chart. Data appears on the Radar overlay based on the most recently used radar mode (such as Harbor, Offshore, or Sentry), and all settings configurations applied to the Radar overlay are also applied to the last-used radar mode. For example, if you use Harbor mode and then you switch to the Radar overlay, the Radar overlay would show Harbor mode radar data. If you changed the gain setting using the Radar overlay menu, the gain setting for Harbor mode would change automatically.