Choosing the right marine chartplotter with NMEA support requires balancing features, display size, and connectivity options. The Garmin Echomap UHD2 54cv stands out for its intuitive interface and detailed maps, making it ideal for anglers. Meanwhile, the Lowrance HDS PRO offers a larger, high-resolution touchscreen with advanced sonar and preloaded charts, perfect for serious boaters. For those wanting a versatile all-in-one system with radar and extensive connectivity, the Simrad GO9 provides a comprehensive package. Each choice involves tradeoffs: smaller displays for portability, or higher costs for advanced features. Here’s how I compare these options to help you find the best fit.
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Key Takeaways
- Display size varies from compact 5-inch screens to larger 10-inch touchscreens, affecting visibility and ease of use.
- Support for multiple transducers and sonar types is common but may require additional purchases or setup complexity.
- Mapping options range from detailed Navionics and C-MAP charts to preloaded inland maps, influencing navigation precision.
- Connectivity features like Wi-Fi and NMEA 2000 enable system integration but add to device cost and setup time.
- Price and feature set tend to correlate, with premium models offering radar and advanced sonar but at higher costs.
| Garmin Echomap UHD2 54cv Chartplotter and Fishfinder with GT20 Transducer, Navionics Plus U.S. Coastal and Great Lakes Maps |  | Best Overall for Versatile Navigation and Fishing | Display Size: 5 inches | Transducer: GT20-TM | Mapping: Navionics Plus U.S. Coastal, Great Lakes, LakeVü g3, BlueChart g3 | VIEW ON AMAZON | See Our Full Breakdown |
| Garmin ECHOMAP UHD2 53CV Chartplotter/Fishfinder with US Inland Maps and GT20-TM Transducer |  | Best for Inland Navigation and Dual Sonar Capabilities | Display Size: 5 inches | Transducer: GT20-TM | Mapping: US Inland Maps, Navionics Plus | VIEW ON AMAZON | See Our Full Breakdown |
| Lowrance HDS PRO Fishfinder/Chartplotter with Smartphone Integration and Preloaded C-MAP U.S. & Canada Charts |  | Best for Large Display and Advanced Sonar | Display: 10-inch SolarMax HD touchscreen | Sonar Support: ActiveTarget 2 & 2 XL, HDI transducer | Charts: Preloaded C-MAP U.S. & Canada | VIEW ON AMAZON | See Our Full Breakdown |
| Garmin ECHOMAP UHD2 73sv with GT54 Transducer, 7” Touchscreen Chartplotter with Navionics+ U.S. Inland Maps |  | Best for Larger Display and Inland Mapping | Display: 7-inch touchscreen | Transducer: GT54-TM | Maps: Navionics+ U.S. Inland | VIEW ON AMAZON | See Our Full Breakdown |
| Simrad GO Chartplotter and Fish Finder with Transducer and Radar Options |  | Best for Integrated Navigation, Radar, and System Compatibility | Display: GO9 multifunction display | Chart Card: C-MAP DISCOVER | Transducer: HDI 83/200 kHz | VIEW ON AMAZON | See Our Full Breakdown |
| marine chartplotter with nmea | Transducer | Connectivity | Display |
|---|---|---|---|
| Garmin Echomap UHD2 54cv Chart | GT20-TM | Wi-Fi, ActiveCaptain app | — |
| Garmin ECHOMAP UHD2 53CV Chart | GT20-TM | Wi-Fi, MicroSD | — |
| Lowrance HDS PRO Fishfinder/Ch | — | — | 10-inch SolarMax HD touchscreen |
| Garmin ECHOMAP UHD2 73sv with | GT54-TM | Wi-Fi | 7-inch touchscreen |
| Simrad GO Chartplotter and Fis | HDI 83/200 kHz | Wi-Fi, NMEA 2000, smartphone mirroring | GO9 multifunction display |
More Details on Our Top Picks
Garmin Echomap UHD2 54cv Chartplotter and Fishfinder with GT20 Transducer, Navionics Plus U.S. Coastal and Great Lakes Maps
This model excels for its bright, high-contrast display and support for multiple sonar types, making it a strong choice for anglers who need clear underwater imaging and detailed maps. Compared with larger units, its compact 5-inch screen may be too small for prolonged navigation, but it compensates with Wi-Fi connectivity for data sharing and compatible device integration. Its support for Navionics Plus U.S. Coastal and Great Lakes Maps ensures detailed coastal charts, though it requires compatible transducers to unlock full sonar features. It’s better suited for boaters seeking a balance of ease of use and detailed data without the complexity of larger systems.
Pros:- Bright, high-contrast display for easy viewing
- Supports multiple sonar types for underwater detail
- Built-in detailed Navionics and Garmin maps
- Wireless sharing between compatible devices
Cons:- Small 5-inch display may be limiting for some users
- Requires compatible transducers for full sonar capabilities
- Wi-Fi setup can be somewhat involved
Best for: Anglers and boaters who want a compact, reliable device with strong mapping and sonar support
Not ideal for: Users needing a large display for detailed navigation or radar integration
- Display Size:5 inches
- Transducer:GT20-TM
- Mapping:Navionics Plus U.S. Coastal, Great Lakes, LakeVü g3, BlueChart g3
- Connectivity:Wi-Fi, ActiveCaptain app
- Sonar Support:Traditional Garmin CHIRP, ClearVü
- Mounting Options:Tilt, Flush
Our verdict“A well-rounded choice for anglers and casual boaters who value portability and mapping clarity.”
Garmin ECHOMAP UHD2 53CV Chartplotter/Fishfinder with US Inland Maps and GT20-TM Transducer
Compared with the 54cv, this 53CV model offers a similar 5-inch color display but emphasizes inland navigation with preloaded US Inland Maps, making it ideal for freshwater anglers and boaters. Its dual sonar support—CHIRP traditional and ClearVü scanning—provides detailed underwater imaging, though it may lack the coastal detail found in Navionics charts. Wi-Fi connectivity allows for easy data sharing, but its limited mapping scope means users needing broader coastal coverage may find it restrictive. This pick appeals to those focused on inland waterways and seeking straightforward, high-quality sonar performance.
Pros:- High-quality 5-inch color display
- Dual sonar support for detailed fishfinding
- Preloaded US Inland Maps for navigation
- Wi-Fi connectivity for data sharing
Cons:- Limited to US Inland Maps; regional expansion may require extra purchase
- Small display size for extensive navigation
- Less suited for coastal or offshore use
Best for: Inland boaters and anglers prioritizing detailed freshwater maps and dual sonar options
Not ideal for: Coastal or offshore users needing extensive marine charts
- Display Size:5 inches
- Transducer:GT20-TM
- Mapping:US Inland Maps, Navionics Plus
- Sonar:CHIRP traditional, ClearVü
- Connectivity:Wi-Fi, MicroSD
Our verdict“A focused device for freshwater users needing dual sonar and detailed inland maps without the complexity of larger systems.”
Lowrance HDS PRO Fishfinder/Chartplotter with Smartphone Integration and Preloaded C-MAP U.S. & Canada Charts
This 10-inch SolarMax HD touchscreen distinguishes itself with an expansive, bright display, suitable for serious navigation and fishfinding. Its support for ActiveTarget 2 & 2 XL live sonar, combined with the HD 3-in-1 transducer, offers extensive underwater imaging, surpassing typical chartplotters in detail and real-time targeting. Preloaded C-MAP charts with 1-foot contours cover U.S. and Canadian lakes, adding precision for inland and nearshore navigation. While the larger screen and advanced sonar make it ideal for experienced users, the device’s complexity and higher price point may deter casual boaters or those seeking a plug-and-play solution.
Pros:- Large, bright touchscreen for easy operation
- Supports real-time fish targeting with ActiveTarget sonar
- Preloaded detailed maps for U.S. and Canada
- Versatile 3-in-1 transducer for comprehensive imaging
Cons:- Higher cost due to advanced features
- Requires familiarity with sonar technology
- Larger size may be less portable
Best for: Experienced anglers and boaters needing detailed mapping, large display, and advanced sonar features
Not ideal for: Beginners or boaters on a tight budget seeking simplicity
- Display:10-inch SolarMax HD touchscreen
- Sonar Support:ActiveTarget 2 & 2 XL, HDI transducer
- Charts:Preloaded C-MAP U.S. & Canada
- Coverage:U.S. and Canadian lakes
- Additional Features:Smartphone integration
Our verdict“Perfect for seasoned anglers wanting comprehensive sonar and mapping in a large, easy-to-read display.”
Garmin ECHOMAP UHD2 73sv with GT54 Transducer, 7” Touchscreen Chartplotter with Navionics+ U.S. Inland Maps
This 7-inch touchscreen offers a significant upgrade in display size, making it easier to interpret navigation data and sonar imaging. Its included GT54 transducer provides traditional, ClearVü, and SideVü sonar support, giving a comprehensive underwater view. The device’s built-in Navionics+ inland maps cover over 18,000 lakes, making it a strong choice for freshwater navigation. Wi-Fi connectivity allows remote control and data sharing, though some setup complexity might challenge less tech-savvy users. This model is well-suited for those prioritizing larger screens and detailed inland mapping with convenient wireless features.
Pros:- Bright, sunlight-readable 7-inch display
- Includes detailed inland maps with contours
- Supports multiple sonar scans with GT54 transducer
- Wireless sharing and remote control capabilities
Cons:- Setup can be complex for beginners
- Requires compatible devices for some features
- Higher price point for the larger display
Best for: Inland boaters needing larger display and detailed lake maps
Not ideal for: Offshore users or those requiring coastal charts and radar
- Display:7-inch touchscreen
- Transducer:GT54-TM
- Maps:Navionics+ U.S. Inland
- Coverage:Over 18,000 lakes
- Connectivity:Wi-Fi
Our verdict“Ideal for inland navigation enthusiasts who want a larger screen and detailed lake maps with modern wireless features.”
Simrad GO Chartplotter and Fish Finder with Transducer and Radar Options
The Simrad GO9 stands apart for combining GPS, sonar, and radar in one high-resolution device. Its support for C-MAP Discover charts with detailed contours and tides makes it suitable for extensive US and Canadian coverage. The HDI transducer offers clear sonar imaging with DownScan and CHIRP support, while Wi-Fi and NMEA 2000 compatibility allow seamless integration with other marine systems. However, the complexity and higher cost suggest it’s better suited for experienced boaters or commercial users who need a comprehensive, multi-function system. It’s less ideal for those seeking a straightforward, stand-alone chartplotter.
Pros:- Combines GPS, sonar, and radar in a single device
- Supports detailed C-MAP Discover charts
- High-resolution display for clear data visualization
- Supports system integration via Wi-Fi and NMEA 2000
Cons:- Complex setup and operation
- Higher price point
- May be overwhelming for beginners
Best for: Experienced boaters and professionals needing integrated GPS, sonar, and radar
Not ideal for: Casual users or those new to marine electronics
- Display:GO9 multifunction display
- Chart Card:C-MAP DISCOVER
- Transducer:HDI 83/200 kHz
- Charts:Tides, Currents, Bathymetric contours
- Connectivity:Wi-Fi, NMEA 2000, smartphone mirroring
Our verdict“Best for advanced users seeking an all-in-one navigation, sonar, and radar system with extensive connectivity options.”
How We Picked
Our selection process focused on devices that combine reliable NMEA 2000 support with robust chartplotting and sonar features. We prioritized products with clear display visibility, versatile mapping options, and connectivity capabilities that facilitate integration with other marine systems. Cost was considered but balanced against feature richness, ensuring each model serves a distinct user need—from casual anglers to professional captains. We also evaluated user feedback and technical specifications to identify tradeoffs, such as display size limitations or setup complexity, which influence overall suitability.
| marine chartplotter with nmea | Transducer | Connectivity |
|---|---|---|
| Garmin Echomap UHD2 54cv Chart | GT20-TM | Wi-Fi, ActiveCaptain app |
| Garmin ECHOMAP UHD2 53CV Chart | GT20-TM | Wi-Fi, MicroSD |
| Lowrance HDS PRO Fishfinder/Ch | — | — |
| Garmin ECHOMAP UHD2 73sv with | GT54-TM | Wi-Fi |
| Simrad GO Chartplotter and Fis | HDI 83/200 kHz | Wi-Fi, NMEA 2000, smartphone mirroring |
Factors to Consider When Choosing Marine Chartplotter With Nmea
Selecting the right marine chartplotter with NMEA support depends on your specific needs—whether you prioritize compact size, detailed maps, sonar capabilities, or system integration. Key factors include display size, mapping coverage, sonar support, and connectivity options. Understanding how these features align with your boating style will help you make a confident decision.
Display Size and Resolution
Size impacts ease of use and visibility. Smaller screens are portable but may limit detail, while larger displays improve readability and multitasking. Consider your typical viewing environment—bright sunlight or shaded cabins—and choose accordingly.
Mapping and Chart Support
Accurate navigation depends on detailed charts. Navionics and C-MAP are popular options, with some devices offering preloaded maps and others requiring extra purchases. Think about whether inland lakes, coastal waters, or offshore regions are your primary focus.
Sonar and Transducer Compatibility
Advanced sonar support, like SideVü or DownScan imaging, enhances underwater visibility. Compatibility with transducers varies, so check if your preferred sonar types are supported or require additional equipment. Higher-end models tend to support multiple sonar configurations, but at increased cost.
Connectivity and System Integration
Features like Wi-Fi, NMEA 2000, and Bluetooth facilitate system expansion and remote control. These enable data sharing, integration with radar or autopilots, and smartphone mirroring. Decide if these features are essential for your setup or if a simpler device suffices.
Frequently Asked Questions
What is NMEA support, and why is it important?
NMEA support means the device can communicate with other marine electronics, such as autopilots, radars, and engine monitors, using the NMEA 2000 or NMEA 0183 standards. This interoperability allows seamless data sharing, improving navigation safety and system management on your boat. For instance, integrating engine data with your chartplotter can provide real-time performance metrics directly on the display.
Can I upgrade maps on these chartplotters later?
Most devices support additional map purchases or microSD card upgrades. For example, Garmin units often support Navionics or BlueChart updates, while Lowrance and Simrad models may offer C-MAP options. Be sure to check compatibility and expansion options if you anticipate needing more detailed or regional charts in the future.
How does sonar support affect navigation and fishfinding?
Sonar support enhances underwater visibility, helping you locate fish and understand bottom contours. Features like SideVü and DownScan provide detailed images that assist in both fishing and safe navigation through shallow or complex environments. Devices with more advanced sonar support tend to be pricier but offer richer underwater data.
Are larger screens always better?
Larger screens improve readability and multitasking but can be bulkier and more expensive. Portability and installation space are also considerations. For smaller boats or those needing a discreet system, a compact display might suffice, whereas larger screens benefit users who need detailed views and multiple data layers at a glance.
Is Wi-Fi necessary on a marine chartplotter?
Wi-Fi facilitates data sharing, software updates, and remote device control, adding convenience but also potential complexity. If you plan to connect your device with other systems or use features like wireless mapping and app control, Wi-Fi support becomes valuable. For basic navigation, it may be optional.
Conclusion
For casual anglers or boaters prioritizing portability and straightforward mapping, the Garmin Echomap UHD2 54cv offers excellent value. Those focused on inland navigation with larger displays and advanced sonar should consider the Garmin ECHOMAP UHD2 73sv. Experienced users needing integrated radar, multiple data sources, and system-wide connectivity will find the Simrad GO9 to be the most comprehensive choice. Budget-conscious buyers might opt for simpler, feature-limited models, while dedicated fishers should lean toward devices that support multiple sonar types and detailed underwater imaging.
