Garmin GPSMAP 1623/1643 16" Chartplotter (Non-Sonar)
SKU:
Description
🧭 A 16" glass helm for the boat that runs its sonar somewhere else on the network.
This is the big-screen non-sonar member of the GPSMAP X3 family — a 16" high-resolution IPS touchscreen with edge-to-edge glass, built for captains who want a commanding chartplotter display and already have sonar handled by a black box or a second combo unit. No internal sounder means you're not paying for a transducer port you'll never use; instead the unit pulls sonar, radar, and IP camera video off the Garmin Marine Network and lays it across all 16 inches. Dual SD slots handle chart upgrades, and full NMEA 2000, NMEA 0183 and OneHelm support wire it into autopilot, engines, digital switching and more.
- ✅ Commanding 16" edge-to-edge IPS touchscreen
- ✅ Non-sonar — networks to the sonar you already run
- ✅ Full system hub — Garmin Marine Network sonar, radar, camera sharing
- ✅ Deep integration — NMEA 2000, NMEA 0183, OneHelm digital switching
- ✅ Dual SD slots for Garmin Navionics and BlueChart upgrades
Choose your map region above: Worldwide Basemap (1623, 010-02919-00) or Garmin Navionics+ US/Canada (1643, 010-02919-01). Both are the same 16" non-sonar hardware.
Built for offshore and cruising captains building a large-format Garmin glass helm.
Need help with fit or compatibility? Carolina Sportsman Outfitters has been outfitting boaters since 2015 — we know the part numbers and can verify network and mounting compatibility before you order. Call 252-431-6001.
Backed by Garmin warranty and CSO's expert product support. Financing available at checkout — no credit needed.
Frequently Asked Questions
What's the difference between the 1623 and 1643? Maps. The 1623 ships with Worldwide Basemap; the 1643 ships with Garmin Navionics+ US/Canada coastal and inland charts. Same 16" non-sonar hardware otherwise.
How do I get sonar on this? Over the Garmin Marine Network from another unit or a sonar black box. If you want built-in sonar on a 16" screen, look at the 1643xsv instead.
Is it touchscreen? Yes — the 16" X3 units are touchscreen with edge-to-edge glass.
You May Also Like
