10 Best Depth Finders 2025 in the United States

The Simrad NSS16 Evo3S is a robust depth-finder and fish finder chartplotter that excels in several key areas. One of its most impressive features is the full HD 16-inch display, which ensures clarity and easy readability, a crucial aspect for effective navigation and fish finding. The iMX 8 high-performance processor enhances the device's responsiveness and allows seamless transitions between functions, ensuring you can quickly switch between sonar readings and GPS navigation without lag. GPS integration is strong, with preloaded C-MAP US Enhanced Charts providing comprehensive inland and coastal coverage, which is great for chartplotting and navigation.

The device supports extensive system expansion, allowing you to monitor vital vessel functions like engine and fuel efficiency, making it versatile for those looking for more than just a fish finder. The combination of touchscreen and keypad controls offers flexibility in all weather conditions, catering to various user preferences. However, the unit's large size and dashboard mount may limit portability, which is worth considering if you need a device for smaller boats or require frequent installations and removals. The NSS16 Evo3S is powered by a 12 Volt DC, aligning well with typical marine setups.

This product is best suited for avid fishermen and marine enthusiasts who value integrated technology and expansive navigation capabilities.

The Simrad NSS12 Evo3S is a high-quality depth-finder and chartplotter designed for serious anglers and boaters who want a reliable and feature-rich device. Its 12-inch high-definition screen makes it easy to see detailed maps and sonar images, which is great for spotting fish and underwater structures. The device uses a powerful iMX 8 processor, so it responds quickly and handles complex sonar data smoothly, helping you find fish with clearer images. It includes built-in GPS navigation with preloaded C-MAP US charts, making it convenient for inland and coastal trips without needing extra map purchases.

This model supports advanced sonar technologies like Active Imaging and StructureScan 3D, offering highly detailed views below the water surface. Bluetooth connectivity allows integration with other boat systems, like engine monitoring and audio control, turning the NSS12 Evo3S into a central hub for your vessel. The touchscreen is responsive and works well in various weather conditions; plus, there’s a keypad with a rotary dial for precise control if you prefer physical buttons.

On the downside, the device is somewhat bulky and requires a bracket mount, which may affect portability and installation on smaller boats. While it excels in features and performance, it sits at a higher price point that might be too much for casual users or those who only need basic depth reading. Also, some users might find the array of functions overwhelming if they're not interested in advanced integration or 3D sonar imaging. This makes the Simrad NSS12 Evo3S most suitable for anglers and boat owners looking for a robust, all-in-one depth finder and navigation tool with excellent display quality, GPS, and sonar capabilities. If you want a powerful, expandable device to enhance your fishing or boating experience, this model offers great value with its advanced features and ease of use. However, if you need something simple and portable, there might be lighter or less expensive options to consider.

The Lowrance Eagle Eye 9 Live is a versatile depth finder designed especially for anglers and boating enthusiasts who want detailed underwater views without complicated setup. Its 9-inch IPS screen is bright and easy to read from various angles—even with polarized sunglasses on—which is great for outdoor use. The included Eagle Eye transducer supports four sonar views simultaneously, including CHIRP sonar and DownScan Imaging with FishReveal, providing clear images of fish and structure beneath the water. This all-in-one sonar feature means you don't need extra modules, simplifying installation and use.

The device comes preloaded with C-MAP inland charts covering over 17,000 US lakes, and it offers Genesis Live mapping to create your own detailed maps on the spot. The autotuning live sonar suggests it adjusts well to different conditions, which helps get accurate readings. The twist-lock connector system makes installation straightforward, suitable for both boats and kayaks, adding to its portability. It runs on battery power, which may require monitoring to avoid running out mid-trip. Also, while it includes GPS integration through its chart features, it may lack some advanced navigation functions found in higher-end models.

The plastic build keeps the unit lightweight but may be less rugged in extreme conditions. With a strong user reception, the Eagle Eye 9 Live represents a dependable choice for those who want detailed, real-time sonar imaging on a medium-sized, easy-to-handle device without fuss. It is best suited for freshwater fishing on lakes and smaller boats where portability and clear visuals are priorities.