Satellite Overlay, updated and optimized for the coming boating season, offers a top-down view of inland and coastal areas.
SonarChart Shading, created from the high-definition contour data within SonarChart, presents a detailed rendering of the seafloor and lake bottoms in varying shades of blue. As coverage areas are released, customers who own a Platinum+ or HotMaps Platinum chart with an active subscription will be able to download the combined satellite overlay and SonarChart™ Shading layer for their region via the Chart Installer. SonarChart Shading Availability
Enhanced Situational Awareness at a Glance
Crisp satellite photography can be displayed on land only, land and shallow water or full overlay, visible on water at closer zoom levels.
A detailed rendering of the seafloor and lake bottom delivers a unique perspective of underwater topography at a glance.
What You Can Do
Adjust the transparency so that charts are fully or partially visible through the overlay. This is helpful in shallow waters or to spot marshes, shoals and sandbars.
Find hidden features such as backwater channels and feeder creeks that might hold fish.
Clearly see channels, drop-offs and other structures over a wide area for a better understanding of the seafloor and lake bottom.
Search the map for visual cues to identify fish-holding structure on inland lakes and coastal fisheries.
Get Satellite Overlay and SonarChart Shading
Satellite Overlay and SonarChart Shading are included with Platinum cards and can be viewed with compatible models from many brands.Check compatibility.
Already own a Platinum card? With an active subscription, the combined layer can be downloaded through the Chart Installer.
A one-year subscription to daily updates and advanced features is included when you purchase any new product.
Check if your GPS plotter model is compatible with Navionics advanced features, and make sure it is running the latest software.
After 1 year, you can renew your subscription at a discounted price. If you don’t, you can still use previously downloaded maps, but advanced features or download updates require an active subscription.