Garmin GPSMAP 840xs Combo Plotter/Sounder


SKU: GA-0100118101 Category:


Garmin GPSMAP 840xs with U.S. Charts, without Transducer

8″ Keyed Chartplotter/Sonar Combo for Cruising, Sailing or Fishing

The GPSMAP 840xs keyed chartplotter/sonar combo has a 8″ color SVGA display and comes with preloaded U.S. LakeVü HD and BlueChart g2 coastal maps. HD-ID 1 kW sonar, CHIRP and DownVü with CHIRP sonar technology are built-in allowing you the flexibility to choose from several optional transducers.

The built-in sonar capabilities of the GPSMAP 840xs gives you the freedom and flexibility to choose from several optional transducers, including 1 kW traditional, CHIRP and all-in-one HD-ID/DownVü scanning sonar with CHIRP technology. Add a GCV 10 black box sonar for both DownVü and SideVü scanning sonar with CHIRP technology (sold separately). When used with a compatible CHIRP transducer (sold separately), GPSMAP 840xs displays crystal-clear sonar images detailing fishing hot spots, ship wreckage or a diving location. With Garmin CHIRP technology, you get remarkable target separation and resolution at extraordinary depths, and can dial into specific frequencies to target certain species of sport fish. Bottom contours are more visible, even at speed, and signal noise can be suppressed at greater depths to provide a more timely interpretation of what’s below for safer navigation and better fishing.

The GPSMAP 840xs comes preloaded with a worldwide basemap. It’s compatible with optional mapping, LakeVü HD Ultra with MaxDef Lakes and BlueChart g2 Vision.

High-sensitivity internal 10 Hz GPS/GLONASS provides position and heading updates 10 times per second. It displays fluid on-screen location and proves to be incredibly accurate when marking 5,000 waypoints and navigating.

This combo allows you to add more capabilities to your boat. It provides NMEA 2000 support so you can see valuable information on your screen for Garmin autopilot, engine data, SiriusXM® Weather radar and more.

The GPSMAP 840xs offers select networking capabilities that allow you to share features with other compatible GPSMAP units, such as radar, GCV 10 DownVü and SideVü scanning sonar, supplemental maps, and user data, such as waypoints, routes and tracks.

Supported sailing features include laylines, enhanced wind rose, heading and course-over-ground lines, and true wind data fields.

  • SKU: GA-0100118101
  • UPC: 753759114886


Keyed chartplotter/sonar combo with 8″ color SVGA display
Preloaded U.S. LakeVü HD and BlueChart® g2 coastal maps
Built-in Garmin HD-ID 1 kW sonar, CHIRP and DownVü scanning sonar with CHIRP technology
High-sensitivity internal 10 Hz GPS/GLONASS receiver
Supports all Garmin marine radar

Display 8″ diag. color LCD
Resolution 800 x 600 pixels
Antenna Internal
Mapping preloaded worldwide basemap
Waypoints/Routes 5,000 Waypoints/Routes, 100 routes, dual SD card slots for external storage
Sounder Built-in Garmin HD-ID and DownVü scanning sonar with CHIRP technology. Optional side-scan with GCV 10 sounder module. Transducer sold separately.
Radar Optional 4 KW radar antennas ranging from an 18″ radome to a 6′ open array
Interface Ethernet, NMEA 2000, wireless support for Apple products
Other Functions Autopilot control, engine data display. Optional AIS, Sirius satellite weather.
Dimensions 11.5″W x 7.4″H x 2.9″D; Wt: 3.5 lbs.
Warranty Two years

In the Box

  • GPSMAP 840xs
  • Power/data cable
  • Bail mount
  • Flush mount
  • Protective cover
  • Documentation

Additional information

Weight 3.5 lbs
Dimensions 2.9 x 11.5 x 7.4 in

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