This slim-line chartplotter flush-mounts easily in your boat and boasts an ultra-bright 5” QVGA display. The GPSMAP 520 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.

Navigate with Ease
With just a few buttons and a simple, intuitive interface, the GPSMAP 520 makes navigating virtually effortless. And instead of a traditional basemap, the 520 has a basemap of worldwide satellite images. It also has an SD™ card slot so you can add additional detailed maps without connecting to a computer.

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 you’re fishing in freshwater or off the coast. The 520 and 520s are 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 mariner’s 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 — one that avoids obstacles, shallow water, buoys and other obstructions.

For a low cost option try BlueChart g2 cards.

Physical & Performance:
Unit dimensions, WxHxD:  5.9" x 6.4" x 2.9" (15.0 x 16.3 x 7.4 cm) 
Display size, WxH:  3.0" x 4.0", 5.0" diagonal (7.6 x 10.2 cm, 12.7 cm diagonal) 
Display resolution, WxH:  240 x 320 pixels 
Display type:  QVGA display 
Weight:  less than 1.75 lb (0.8 kg) 
Battery:  none 
Battery life:  none 
Waterproof:  yes (IPX7) 
High-sensitivity receiver:  no 
Antenna:  internal 
NMEA input/output:  NMEA 0183 

Maps & Memory:
Basemap:  yes 
Preloaded maps:  no 
Ability to add maps:  yes 
Built-in memory:  none (cannot load maps to internal memory) 
Accepts data cards:  SD™ card slot 
Waypoints/favorites/locations:  1,500 
Routes:  20 
Track log:  10,000 points; 20 saved tracks 

Features:
Garmin radar compatible:  no 
Garmin sonar compatible:  yes 
CANet® compatible:  yes 
Garmin Marine Network™ compatible:  no 
Touchscreen:  no 
Supports AIS (tracks target ships' position):  yes 
Supports DSC (displays position data from DSC capable VHF radio):  yes 
Audible alarms:  yes 
Tide tables:  yes 
Hunt/fish calendar:  no 
Sun and moon information:  yes 
3-D map view:  yes (with optional BlueChart g2 Vision card) 
Auto Guidance:  yes (with optional BlueChart g2 Vision card) 
Automatic routing (turn by turn routing on roads):  no 
XM WX Weather & Radio for U.S. compatible:  no 
Voice prompts (e.g. "Turn right in 500 ft."):  no 
Speaks street names (e.g. "Turn right ON ELM STREET in 500 ft."):  no 
Remote control:  no 
Headphone jack/audio line-out:  no 
Audio/video input/output:  no 
Portable:  no 
Automotive/motorcycle-friendly:  no