Sonar Imagery

Bottom Hardness at a Glance​

The sonar imagery feature reveals bottom hardness clearly and in vivid color, highlighting both subtle and dramatic transition areas.

Bottom Hardness at a Glance​

Find the Best Fishing Spots

Sonar imagery is generated from proprietary multibeam surveys. An angler can use it as a reference to better understand the structural characteristics and bottom composition (rocky, sandy, vegetation, roadbeds, etc.) that can inform their fishing strategies.

Find the Best Fishing Spots

How to Get Sonar Imagery

GPS Plotter

Included as a downloadable option with Platinum cards, it can be viewed with compatible models from many brands. Check compatibility

Already have a Platinum card? With an active subscription, you can download it through the Chart Installer.


With an active subscription, you can download the data and then, from the Map Options section, easily overlay sonar imagery on our chart layers.

Sonar Imagery Coverage

The Navionics Subscriptions

When you purchase any new product, a one year subscription to daily updates and many advanced features is included. The subscription requires activation.

GPS Plotter Cards
What you get:
- Download of chart layers
- Daily Updates
- Dock-to-dock Route Guidance1
- Advanced Map Options
- Plotter Sync 
- Satellite Overlay with SonarChart Shading
- Relief Shading
- Sonar Imagery

Check if your GPS plotter model is compatible with advanced features and make sure it is running the latest software.

Subscription expired? After one year, you can purchase a renewal. If you don’t, you can still use your chart layers and download the rest of your coverage area.
The above mentioned advanced features or the download of chart updates require an active subscription.

Mobile App
With an active marine chart subscription within the Navionics Boating app, you can download detailed charts and marine data that can be used offline, plus get suggested routes using Auto Guidance+2 technology, daily updates, chart overlays, HD bathymetry, crowdsourced local information and much more. In addition to all the great chart content, the one-year renewable3 subscription offers daily updates and powerful advanced features accessible on or off the water.

Discover Our Other Overlays

Satellite Imagery

Relief Shading


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¹ Auto Guidance+ is for planning purposes only and does not replace safe navigation operations.
2 You can manage your subscription anytime, and you can turn auto-renewal off. 
Charts, overlays, daily updates and advanced features are not accessible after the subscription expires.