Humminbird HELIX 15® CHIRP MEGA SI+ GPS G4N

Take your fishing to the next level with the Humminbird HELIX 15 CHIRP MEGA SI+ GPS G4N, a pinnacle fish finder that blends a 15.4" display with industry-leading imaging and mapping features. Navigate, mark hotspots, and fish with confidence wherever you roam.

Crystal-clear imaging that reveals more below the surface

MEGA Side Imaging+ and MEGA Down Imaging+ deliver ultra-detailed views out to 200 feet on either side of your boat and directly beneath you. You’ll gain up to 20% more detail and up to 60% more range/depth capability versus standard MEGA imaging, giving you a sharper picture of fish and structure. The Dual Spectrum CHIRP sonar provides two search modes—Wide for broad coverage and Narrow for pinpoint detail—powered by Humminbird’s Low-Q CHIRP transducer.

Built-in navigation, powerful mapping, and real-time charting

Internal GPS with the Humminbird Basemap helps you navigate with confidence. See underwater terrain, marks, hazards, marinas, buoys, and depth contours, with charts covering more than 10,000 lakes and coastal coverage for the continental U.S. AutoChart Live lets you map depth contours, bottom hardness, and vegetation in real time as you fish, with eight hours of built-in recording time and compatibility with AutoChart Zero Line SD cards for virtually endless mapping.

Premium charts and cross-brand compatibility

Access premium charting options from LakeMaster and CoastMaster, and choose Navionics charts to tailor maps to your region and style. This HELIX 15 G4N supports multi-network connectivity so you can share data across devices and networks.

One-Boat Network and advanced networking

With One-Boat Network compatibility, you can integrate seamlessly with Minn Kota and Cannon components to unlock exclusive boat-control and fishing features. Ethernet networking provides high-speed data transfer, while Wi-Fi, Bluetooth, and NMEA 2000 keep your system connected and upgrade-ready.

Experience fast, intuitive control

The Master HELIX keypad puts key functions at your fingertips, with a user-friendly menu and soft-key navigation that works reliably in any condition.

Upgrade to the HELIX 15 CHIRP MEGA SI+ GPS G4N and enjoy a smarter, more capable view beneath and ahead of your boat—helping you locate more fish, map the lake you love, and fish more effectively on every trip.