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The Garmin GPSMAP® 1643xsv is the high-definition powerhouse of the GPSMAP x3 series, featuring a expansive 16-inch touchscreen. It is engineered for mariners who demand a large-format “glass bridge” experience with superior sonar clarity and preloaded Garmin Navionics+™ mapping for immediate, high-detail navigation.
Dimensions: $15.1″ \times 10.3″ \times 3.0″$ ($38.4 \times 26.2 \times 7.6$ cm)
Weight: 9.7 lbs (4.4 kg)
Display Type: Full HD IPS (In-Plane Switching) Touchscreen
Display Size: $13.6″ \times 7.7″$; $15.6″$ diagonal
Resolution: $1920 \times 1080$ pixels
Water Rating: IPX7
Mounting: Bail, flush, or flat (Flat mount requires custom professional installation)
Power Input: 10 to 32 Vdc
Max Power Usage (at 10 Vdc): 74.75 W
Typical Current Draw (at 12 Vdc): 3.61 A
Maximum Current Draw (at 12 Vdc): 6.07 A
Compass-Safe Distance: 25.5″ (65 cm)
Integrated Sonar: 1 kW Traditional CHIRP, SideVü, and ClearVü
Standard Frequencies:
Traditional CHIRP: 50/77/83/200 kHz (L, M, H CHIRP)
ClearVü/SideVü: 260/455/800/1000/1200 kHz
Live Sonar Support: Compatible with Panoptix™ and LiveScope™ (requires compatible transducer)
Max Depth: 5,000 ft at 1 kW (Actual depth varies by water conditions and transducer)
Garmin Marine Network™ Ports: 2
NMEA 2000® Port: 1
NMEA 0183 Ports: 1 Input (Rx), 1 Output (Tx)
J1939 Port: 1 (CAN bus for engine data)
Video Connections:
1 BNC Composite Input
1 HDMI Input
1 HDMI Output
Wireless: Built-in Wi-Fi, Bluetooth, and ANT+
Data Cards: 2 microSD™ slots (located on the back)
Preloaded Charts: Garmin Navionics+™ (Coastal and Inland coverage)
Receiver: 10 Hz high-sensitivity GPS/GLONASS/Galileo
Waypoints / Routes: 5,000 / 100
Track Log: 50,000 points; 50 saved tracks
Advanced Features: AIS/DSC support, OneHelm™ digital switching, and Garmin SailAssist™.
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