10 Best Depth Finders For Boats 2026 in the United States

The Simrad NSS9 Evo3S is a solid choice for boaters needing a reliable depth finder combined with advanced navigation tools. Its 9-inch high-definition LCD screen offers clear visuals, making it easy to read underwater details and maps. Powered by a strong iMX 8 processor, the device responds quickly and handles multiple functions smoothly, which is great for spotting fish and navigating confidently. It includes built-in GPS with preloaded C-MAP US charts, so you can track your position and plan routes without extra equipment.

The HALO 20+ radar adds safety by helping you see nearby boats, weather, and even bird flocks that indicate fishing spots, which is a valuable bonus. Its advanced sonar processing supports features like Active Imaging and StructureScan 3D, offering a detailed and accurate underwater picture. The unit supports vessel-wide system integration, allowing you to monitor engines and control onboard systems from one screen.

The NSS9 Evo3S is on the heavier side and a bit bulkier than simpler fish finders, which might be overkill for casual anglers or small boats. This depth finder is best suited for serious fishermen and boaters who want a multifunction device with strong navigation and safety features, rather than just a basic fish finder.

The Simrad GO9 XSE is a solid choice for boaters who want a multifunctional depth finder with strong features packed into a user-friendly 9-inch touchscreen display. It includes a reliable 83/200 kHz transom mount transducer that covers a good range of depths and works well with the built-in advanced echosounder supporting CHIRP technology. This means it can give clear, detailed images of underwater structures and fish. The display is bright and sharp, making it easy to see even in bright sunlight, which is great for outdoor use. GPS integration comes built-in with detailed C-MAP Discover charts covering US and Bahamas waters, helping with navigation and fishing spots. The system also supports Wi-Fi and Bluetooth for easy updates and device connections. Including the HALO20 radar adds an extra layer of safety by detecting obstacles around your boat.

On the downside, while the unit offers many features, it may feel a bit pricey compared to simpler depth finders, and the full benefits of the radar and networking features might require some learning or additional equipment. The size and weight are moderate, but mounting options are flexible for different boats. For those seeking a well-rounded, advanced depth finder with radar and GPS capabilities in one package, the Simrad GO9 XSE remains a dependable option that suits fishing and recreational boating well.

The Lowrance Eagle Eye 9” Live Sonar is an advanced depth-finder that caters to both casual and serious boating enthusiasts. One of its key strengths is the versatility it offers with four different sonar views from a single transducer: Live Forward, Live Down, CHIRP Sonar, and DownScan Imaging with FishReveal. This makes it easier for users to get a complete understanding of the underwater environment without needing additional modules.

The autotuning live sonar feature further simplifies the user experience by automatically adjusting settings for optimal performance, which is especially useful for those who may not be familiar with manual tuning. Additionally, the detailed C-MAP charts with Genesis Live provide comprehensive mapping and navigation data, enhancing the functionality of the device. The 9-inch IPS LED screen ensures clear visibility from all angles, even when wearing polarized glasses. The new twist-lock connector system also adds to the convenience by making installation easy and reliable whether on a boat or kayak.

However, there are some notable drawbacks. The unit is relatively new to the market, first available in August 2024, and with a weight of 2 pounds and dimensions of 11.3 x 3.54 x 6.39 inches, it may be bulkier compared to other models, which could be a consideration for those with limited mounting space. The Lowrance Eagle Eye 9” Live Sonar offers a feature-rich and user-friendly experience but may require more market validation and space consideration for some users.