Garmin Flush mounting kit;

This slim-line chartplotter flush-mounts easily in your boat and boasts an ultra-bright 5 QVGA display. Also sports a built-in, satellite-enhanced worldwide basemap and simple, straightforward buttons and menus. You can add the optional BlueChart g2 Vision SD card for even more enhanced features.
Add Sonar
Where applicable, the sounder version, GPSMAP 520s, comes with a powerful dual frequency transducer that clearly paints depth contours, fish targets and structure whether you­re fishing in freshwater or off the coast. The 520s is also CANet´ compatible, so you can share sounder data with another chartplotter on your boat.
Add Extras with BlueChart g2 Vision
With the optional BlueChart g2 Vision SD card, you can add a whole new dimension of exceptional features to your chartplotter.
3D mariner­s eye view or fish eye view provides you with a 3-dimensional perspective of map information, both above the waterline and below it. High-resolution satellite images and aerial photographs help you orient yourself in unfamiliar areas. Auto Guidance technology searches through all relevant charts to create a route you can actually follow ³ one that avoids obstacles, shallow water, buoys and other obstructions.