Sonar Modules
Marine Sonar Modules & Black Box Fishfinders
Dedicated sonar modules and black box fishfinders that add fishfinding capability to existing chartplotters. Our collection features sonar modules from Simrad, Lowrance, Raymarine, Garmin, and Furuno.
Sonar modules provide professional-grade CHIRP sonar, StructureScan, and advanced fishfinding without needing a dedicated fishfinder display. Display sonar data on your existing chartplotter.
Add Sonar Capability: Part of our Sonar & Fishfinders collection. Pair with existing chartplotters. Add transducers for sonar. Compare with combo units. Connect via Navico Ethernet, RayNet, or Garmin networking.
Adding sonar to an existing display
A sonar module is worth considering once your chartplotter has run out of built-in sonar capability, or where you want a level of CHIRP performance or structure-scanning detail the display's internal sounder cannot deliver on its own. The module itself does the processing; the display simply shows the result, so check first that your chartplotter model can actually run networked sonar rather than only its own internal sounder.
Transducer choice matters as much as the module: CHIRP performance depends on using a transducer built for it, and structure-scanning imaging needs a specific transducer type again, so do not assume an existing depth-only transducer will deliver what the module is capable of. Connection back to the display is usually over the manufacturer's own Ethernet network rather than NMEA 2000, which does not carry sonar imaging data.
If you are trying to decide between a black box module and a dedicated combo unit, it usually comes down to whether you already have display space to spare.
