Navionics cards has never been compatible with Garmin Chartplotters you would always have to use a Garmin card. Navionics will be introducing SonarCharts for Garmin units in 2015. They would like to give out FREE testing charts just for Garmin user, in return you give them your feedback on the product. They want to get all the details straight before it hits the market thats why I need you. Navionics SonarCharts for Garmin will be breaking the contours down to onefoot in 18,000 Navionics Lakes and out to 80 feet in coastal areas. Beyond 80 feet for saltwater its 3 foot contours to 250 ft and 6 foot beyond that. The first 20 people that send me a private message with your name, address, phone number, email, and plotter type will receive a free Navionics testing card. If you want to see what it would look like visit http://webapp.navionics.com/?lang=en and click on the circle button in the bottom left hand corner thats what you will get.