The GPSMAP 431s is a compact chartplotter that features an ultra-bright 4" (10.16 cm) 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 basemap preloaded with U.S. Garmin Lakes and an easy-to-use interface designed to help you navigate the open waters with ease. The GPSMAP 431s also accepts BlueChart® g2 Vision® cards (sold separately) for added features and functionality such as high-resolution satellite imagery, 3-D views and Auto Guidance technology.
Navigate the Lake
The GPSMAP 431s comes ready to go with preloaded U.S. Garmin Lake map data. For areas outside the U.S., the GPSMAP 431s has a worldwide basemap with satellite images in place of more traditional maps. The GPSMAP 431s also comes standard with a high-sensitivity GPS receiver for superior satellite tracking and quicker acquisition times. And with an SD™ card slot, it’s easy to add additional maps without connecting to a computer.
Get Sonar
The GPSMAP 431s comes with a powerful dual-beam transducer that clearly illustrates depth contours, fish targets and structure whether you’re fishing in freshwater or off the coast. The GPSMAP 431s also is NMEA 0183-certified for easy connectivity with sensors, instruments and future marine offerings.
Add Extras with Garmin Lakes Vision
With the optional Garmin Lakes 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-D perspective of map information, both above and below the waterline.
- High-resolution satellite images to 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
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Unit dimensions, WxHxD
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5.7" x 5.0" x 2.7" (14.5 x 12.7 x 6.9 cm)
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Display size, WxH
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2.4" x 3.2"; 4.0" diagonal
(6.1 x 8.1 cm; 10.2 cm diagonal)
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Display resolution, WxH
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240 x 320 pixels
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Display type
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QVGA display
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Weight
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1.3 lbs (590 g)
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Water rating
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IPX7
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Receiver
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High sensitivity
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Antenna
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Internal only
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Mounting options
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Bail with swivel or flush
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Power consumption
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Max power usage at 13.8 Vdc: 15 W
Typical current draw at 12 Vdc: 0.6 A
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Maps & Memory
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Preloaded maps
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Inland Lakes (inland maps)
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Accepts data cards
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1 SD™ card
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Waypoints
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3,000
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Routes
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100
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Track log
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10,000 points; 50 saved tracks
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Features & Benefits
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Garmin Radar compatible
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No
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Garmin Sonar compatible
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Yes
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NMEA 2000® compatible
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No
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NMEA 0183 compatible
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Yes
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Garmin Marine Network™ compatible
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No
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Garmin SmartMode compatible (customizable monitor presets)
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No
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Supports AIS (tracks target ships position)
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Yes
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Supports DSC (displays position data from DSC-capable VHF radio)
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Yes
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Tide tables
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Yes
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Garmin Meteor Audio System compatible
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No
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Supports Fusion Lync compatible marine radios
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No
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GSD™ Black Box sonar support
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No
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GCV™ Black Box sonar support
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No
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SiriusXM™ Weather & Radio compatible
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No
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BlueChart® Mobile (planning) compatible
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No
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Garmin Helm compatible
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No
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GRID™ (Garmin Remote Input Device) compatible
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No
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Wireless remote compatible
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No
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Wireless mouse compatible
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No
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Sonar Features & Specifications
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Dual-frequency (50/200 kHz) sonar capable
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No
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Dual-beam (77/200 kHz) sonar capable
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Yes
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Frequencies supported
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77/200 kHz
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Transmit power
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500 W RMS
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CHIRP sonar technology
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No
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DownVü™
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No
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SideVü™
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No
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Voltage range
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10-32 Vdc input
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Maximum depth
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900 ft.
(depth capacity is dependent on water bottom type and other water conditions)
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Bottom lock (shows return from the bottom up)
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Yes
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Water temperature log and graph
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Yes
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Sonar recording
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No
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Sonar history rewind
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No
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Connections
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NMEA 0183 input ports
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2
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NMEA 0183 output ports
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2
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Video input ports
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None
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Video output ports
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None
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Wireless connectivity
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No
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Garmin Marine Network™ ports
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None
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- GPSMAP 431s
- Tilt/swivel mount
- Protective front cover
- Power/data cable
- Documentation
- Dual beam transducer