GPSMAP® 521/521s

The GPSMAP 521 is a compact chartplotter that features an ultra-bright 5” QVGA color display along with an improved high-speed digital design for increased map drawing and panning speeds. It’s ready to go with a built-in, satellite-enhanced worldwide basemap and an easy-to-use interface designed to help you navigate the open waters with ease. The GPSMAP 521 also accepts BlueChart® g2 Vision cards for added features and functionality such as high-resolution satellite imagery, 3-D views and Auto Guidance technology.

View Satellite-enhanced Worldwide Basemap

The GPSMAP 521 basemap contains worldwide satellite images in place of traditional maps. The GPSMAP 521 also comes standard with a high-sensitivity GPS receiver for superior satellite tracking and quicker acquisition times. In addition, the GPSMAP 521 can receive U.S. graphical weather data via optional GXM 51 satellite receiver/antenna. And with an SD card slot, it’s easy to add additional maps without connecting to a computer.

Add Sonar

Where applicable, the sounder version, GPSMAP 521s, comes with a powerful dual-frequency transducer that clearly illustrates depth contours, fish targets and structures whether you’re fishing in freshwater or off the coast. The GPSMAP 521 and GPSMAP 521s are also NMEA 2000-certified for easy connectivity with sensors, instruments and future marine offerings.

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.

  • MarinerEye view and FishEye view provide you a 3-dimensional perspective of map information, both above and below the waterline.
  • 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.

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: 234 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: yes
Antenna: internal
NMEA input/output: NMEA 0183 compatible and NMEA 2000 certified

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: 3,000
Routes: 100
Track log: 10,000 points; 50 saved tracks

Features:
Garmin radar compatible: no
Garmin sonar compatible: yes
CANet® compatible: no
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. & Canada compatible: yes
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