Designed for use with several Garmin GPS chartplotters and handheld devices, SonarChart™ card provides bottom contour detail of up to 1 ft in U.S. and Canada and 2 m in South America. Product offers fast redraw speed when panning and zooming, and also includes navigational aids, providing complete resource for all boating activities. Garmin customers can record sonar logs and upload them to Navionics to improve their local charts while also benefiting from boating community’s contributions.