This slim-line chartplotter flush-mounts easily in your boat and sports preloaded detailed maps for the U.K. The GPSMAP 550 also features a 12.7 cm QVGA display and simple, straightforward buttons and menus. You can add the optional BlueChart® g2 Vision SD card for even more enhanced features.
Navigate with Ease
The 550 includes detailed coastal maps for the U.K. as well as a worldwide basemap of satellite images for other areas. The SD card slot makes it easy to add additional maps without connecting to a computer. And with just a few buttons and a simple, intuitive interface, the 550 makes navigating your way through the water easy.
Add Sonar
The sounder version, GPSMAP 550s, has the option of connecting a powerful dual frequency transducer that clearly paints depth contours, fish targets and structure when you're fishing. It's 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 chart 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.

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)
Antenna: internal
NMEA input/output: NMEA 0183
Maps & Memory:
Basemap: yes
Preloaded maps: yes
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
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
3D 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
Remote control: no
Headphone jack/audio line-out: no
Audio/video input/output: no
Portable: no
Automotive/motorcycle-friendly: no