A good marine chartplotter is one of the most important safety investments for your boat. Today’s units combine GPS navigation, depth finding, weather overlays, and AIS integration into one screen. Whether you’re day-tripping in a bay or fishing 30 miles offshore, having reliable charts and position data is non-negotiable.
We researched the top marine GPS and chartplotter units available in 2026, evaluating display quality, chart detail, ease of use, and value. Here are our top picks across different budgets.
What to Look for in a Marine Chartplotter
Screen size matters more than most buyers expect. A 7-inch display is adequate for boats under 22 feet; go 9–12 inches for larger vessels. Sunlight readability (measured in nits) is critical — anything under 700 nits washes out in afternoon sun. Built-in sonar is valuable for fishing; navigation-only units save money for cruisers. NMEA 2000 compatibility lets the unit communicate with autopilots, VHF radios, and engine gauges.
Top Chartplotters of 2026
| Model | Screen | Key Features | Best For | Price Range |
|---|---|---|---|---|
| Garmin ECHOMAP Ultra 2 | 10″ | Built-in sonar, Navionics+, NMEA 2000 | Fishing & cruising | $800–$1,100 |
| Humminbird HELIX 10 CHIRP | 10″ | AutoChart Live, dual-beam sonar | Coastal fishing | $700–$950 |
| Garmin GPSMAP 923xsv | 9″ | Multi-touch, BlueChart, LiveScope ready | Offshore anglers | $1,200–$1,500 |
| Lowrance HDS-9 Live | 9″ | ActiveTarget 2 compatible, C-MAP | Tournament fishing | $900–$1,200 |
| Simrad GO9 XSE | 9″ | Broadband radar-ready, wireless | Cruising & sailboats | $800–$1,100 |
Best Budget Pick: Garmin STRIKER Plus 9sv
If you’re primarily fishing and don’t need full chart navigation, the Garmin STRIKER Plus 9sv delivers excellent sonar and GPS waypoint functionality around $450. It doesn’t include pre-loaded charts, but BlueChart cards can be added. For day trips on familiar water, it’s hard to beat the value.
Best Mid-Range: Humminbird HELIX 10 CHIRP MEGA SI+
Humminbird’s MEGA Side Imaging produces incredibly detailed images of structure beside the boat. The HELIX 10 adds AutoChart Live for creating your own depth maps, plus a bright, clear display. It’s the go-to for serious coastal anglers who want to see what’s around them in high definition.
Best Premium: Garmin ECHOMAP Ultra 2
The ECHOMAP Ultra 2 series is Garmin’s current best-in-class offering for integrated navigation and sonar. The crisp 10-inch display handles direct sunlight well, Navionics+ charts are included, and the unit supports LiveScope sonar for real-time fish imaging. If budget isn’t the primary constraint, this is the unit to buy.
Installation Tips
Most chartplotters mount on a RAM mount or flush-mount bracket. Run power directly to the battery with an inline fuse. Transducer placement is critical — mount it where water flow is smooth at speed, near the centerline below the waterline. Update your charts annually; Navionics and C-MAP both offer subscription plans that keep data current.
A GPS chartplotter pairs especially well with a quality marine VHF radio — together, they form the communication and navigation backbone of any safe offshore outing. If you’re equipping a recently purchased vessel, our used boat buying checklist lists the electronics and safety gear you should verify are installed and working before leaving the dock.