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Garmin GPSMAP 520 GPS Chartplotter with External Antenna
For mariners with a keen eye for value, this versatile chartplotter delivers a lot of navigation for the money. It features a bright 5 inch QVGA color display, satellite-enhanced worldwide basemap imagery, and an SD card slot that makes it easy to add features with the optional BlueChart® g2 Vision card. Like all Garmin plotters, these utilize WAAS/EGNOS-enabled GPS receivers for extreme high accuracy (typically within 3 meters).
The 520 includes a worldwide basemap.
See detail-rich imagery like never before
The 520’s worldwide basemap can be enhanced with the optional BlueChart® g2 Vision card, which provides high-resolution aerial reference photos for help navigating tricky harbors and channels — or locating spots like area marinas, fuel stops or restaurants.
The g2 Vision plug-in data card also allows the GPSMAP 520 to graphically depict a true 3D “mariner’s eye” topside view or “fish eye” underwater navigation perspective.
Experience super simple user interface for easy operation
With fewer buttons to push and fewer operational steps to navigate, the GPSMAP 520’s simplified menu format makes it easy for you to see and select the data you want to access on-screen.
Simplify navigation with Auto Guidance
Optional g2 Vision auto guidance technology will help simplify your navigation. It’s like having a knowledgeable guide to local hazards and waterways always on deck. Auto Guidance searches all the chart features to suggest the best known charted route for navigation.
Enjoy added functionality of sonar The 520s comes with powerful dual frequency or dual beam sonar to clearly paint depth contours, fish targets, structure, etc. It’s also CANet™ capable, allowing sounder data to be shared with other plotter displays on your boat. | 
