3D View and Satellite Overlay

Maximize your situational awareness with additional viewing options! Zoom, pan, rotate and adjust pitch of the map. Customize overlay transparency over land or land and water! See video


Enjoy the high definition map that you can enhance. SonarChart features extraordinary bottom contour detail, great for increasing awareness of shallow waters and for locating fishing areas at any depth level. Record and upload sonar logs to build better charts for your favorite spots.

More than 18,000 HD lakes

Check out detailed coastlines, including docks and boat ramp locations, Pro Staff additions, and coastal data with tides and currents. Search our lake list below for your favorite lakes.

Underwater structure

See unbelievable lake bottom composition in one foot contours plus clearly marked road beds, foundations, bridges, brush piles, culverts, creek channels, and more.

Freshest Data

Take advantage of free daily updates for one year, including thousands of edits to:

Update your charts

After Freshest Data expires, you can still get the most up-to-date Nautical Chart, SonarChart, and Community Edits. Renew online for another year of daily updates and Save 50%.


HotMaps Platinum is compatible with the best chartplotters from most leading brands.


Check out your favorite lakes on our WebApp to see the same Nautical Chart available for your GPS chartplotter. Zoom in and toggle the SonarChart icon to view amazing one foot contours.



Plus Tabs Display