Garmin GPSMAP 1643xsv Combo GPS/Fishfinder GN+

The Garmin GPSMAP 1643xsv provides a 16-inch Full HD IPS touchscreen with Garmin Navionics+ coastal and inland charts, built-in 1kW CHIRP, UHD ClearVü, and UHD SideVü. No transducer is included, but NMEA 2000, J1939, and two Garmin Network ports provide a strong base for a large fishing boat, cruiser, or multi-display helm. The Full HD screen is suited to detailed split-screen work.

Key Features

- 16-inch Full HD IPS touchscreen – Provides a large workspace for charts, sonar, and system data.
- 1920 x 1080 resolution – Shows detailed mapping and fishfinding information across the large display.
- 1kW CHIRP, UHD ClearVü, and UHD SideVü – Supports conventional and scanning sonar when paired with suitable hardware.
- Garmin Navionics+ coastal and inland charts – Provides preloaded chart coverage for supported waters.
- NMEA 2000, J1939, and two Garmin Network ports – Supports marine, engine-data, and wired network connections.

Who Is This For?

This model suits large offshore fishing boats, commercial-style helms, coastal cruisers, and multi-display installations where a 16-inch screen can be viewed comfortably. Its Full HD resolution is useful when charts and sonar are shown together.

It is not ideal for a small console or buyers seeking a complete ready-to-fish package, because no transducer is included. A smaller GPSMAP or ECHOMAP unit is easier to install where helm space is limited.

Compatibility

Confirmed interfaces include NMEA 2000, J1939, two Garmin Network ports, 1kW CHIRP, UHD ClearVü, UHD SideVü, and Garmin Navionics+ coastal and inland charts. The supplied information does not identify specific transducer models, NMEA 0183, radar, autopilot, WiFi, or ANT+ compatibility. No named incompatible system was provided; verify Garmin network and transducer requirements before installation.

Technical Specifications

- Brand: Garmin
- Model: GPSMAP 1643xsv, 010-02368-51
- Display: 16-inch IPS touchscreen
- Resolution: 1920 x 1080 Full HD
- Preloaded charts: Garmin Navionics+ coastal and inland
- Built-in sonar: 1kW CHIRP, UHD ClearVü, UHD SideVü
- Transducer: Not included
- Networking: NMEA 2000, J1939, two Garmin Network ports
- Warranty: 2-year limited warranty
- Origin: Made in Taiwan

Warranty & Support

Garmin provides a 2-year limited warranty. The supplied specifications do not state warranty exclusions or service procedures.

The GPSMAP 1643xsv is the charted 16-inch Garmin choice, offering the same large Full HD display class as the 1623xsv but adding Garmin Navionics+ coastal and inland charts. Its main trade-off is the missing transducer and substantial installation footprint. Choose it for a large connected helm where regional chart coverage is required; choose a smaller unit if space matters more.