Garmin Chartplotters

A chartplotter is the brain of the modern helm, and Garmin builds the most popular displays on the water. This collection covers the EchoMap and GPSMAP families, from compact units for a center console to large multifunction displays for an offshore bridge. Choosing right comes down to screen size, whether you want built-in sonar, and how the unit ties into the rest of your electronics.

Start with screen size

Bigger screens are easier to read at a glance and leave room for split views of chart, sonar, and radar, but they need dash space and cost more. A 7 to 9 inch display suits tight helms on skiffs and center consoles, while 12 inch and larger units give offshore crews room to run multiple windows at once. Measure the dash and pick the largest screen that fits cleanly. Consider sun glare and viewing angle when you select the size.

Decide on sonar

Many Garmin units include built-in sonar with traditional, CHIRP, and scanning modes, while others are chart-only displays meant to network with a separate sonar module. If you fish, choose a sonar-capable unit and pair it with the right transducer for your water depth. Confirm the unit supports the CHIRP frequencies your transducer uses. Test the system on the water after install to confirm returns are clear.

Charts and cards

Garmin units ship with a base map and often detailed coastal charts for your region. Add a BlueChart g3 card or Navionics chart for finer detail, depth contours, and updates. Match the chart to where you boat so you get the resolution that matters on your water. Update charts each season to keep hazards and new marks current.

Network it right

Garmin displays share data two ways. They use NMEA 2000 for engine data, sensors, and autopilot. They also use the Garmin Marine Network for radar, sonar black boxes, and sharing charts between displays. Plan which devices talk to which network before you buy cables, and run a clean backbone with the correct tees and terminators. Label every connection at install time to speed future service.

Touchscreen or keyed

Touchscreen units are quick and intuitive at the dock and in calm water, while keyed or hybrid controls are easier to use with wet hands in a chop. Many offshore boaters prefer a hybrid that offers both. Pick the control style that matches your conditions and test it with gloves on before final purchase.

Plan for power and mounting

Every Garmin unit needs steady voltage and a secure mount. Use the correct fuse size and route power wires away from other electronics to limit interference. Choose a mount that lets you tilt and turn the screen for best viewing from the helm seat.

Not sure which Garmin fits your boat and how you fish? Tell our techs your dash space, your water, and whether you run sonar and radar, and we will match the display, transducer, charts, and networking so it all works together.