Raymarine
Raymarine Axiom+ 9
$1299.99
Best Marine Chartplotters · head-to-head
Raymarine Axiom+ 9 vs Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N
A sourced, side-by-side comparison. Raymarine Axiom+ 9 is cheaper at $1299.99. Every spec and price links to its source.
Humminbird
Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N
—
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Raymarine Axiom+ 9 | Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N |
|---|---|---|
| US price | $1299.99 | — |
| Brand | Raymarine | Humminbird |
| Released | — | — |
| Display size (in) | 9 | 9 |
| Resolution px | 1280x720 | 1024x600 |
| Sonar builtin | None built-in — chartplotter only; adding fishfinding requires an external sonar module and transducer via the 25-pin RealVision-type connector | MEGA CHIRP + MEGA Side Imaging+ + MEGA Down Imaging+ |
| Chirp frequencies (kHz) | — | MEGA CHIRP: full 150-220, narrow 180-240, wide 140-200, optional 28-250; MEGA SI+ 1050-1175; MEGA DI+ 1100-1200; also supports 50/83/200/455/800 |
| Gps type | GPS, GLONASS, BeiDou, internal ceramic chip antenna, SBAS (WAAS in the US) | Internal GPS receiver with trackplotting; Humminbird Basemap preloaded (10,000+ lakes plus US coastal) |
| Touchscreen | Yes | No |
| Networking | RayNet Ethernet (10/100 Mbps), NMEA 2000 (DeviceNet), Bluetooth 4.0, Wi-Fi 802.11 b/g/n, USB Micro-B, microSDXC | Ethernet (5-port switch compatible), NMEA 2000, Bluetooth, Wi-Fi, One-Boat Network |
| Preloaded charts | None on base SKU E70636; LightHouse Charts North America on SKU E70636-00-102 | Humminbird Basemap (10,000+ lakes plus continental US coastal coverage); LakeMaster/CoastMaster/Navionics compatible but sold separately |
Sources — Raymarine Axiom+ 9: raymarine.com (verified 2026-08-01). Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N: humminbird.johnsonoutdoors.com (verified 2026-08-01).
What's the difference between the Raymarine Axiom+ 9 and Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N?
Where the two actually differ on the specs we track (6 of 8). Matching specs are omitted.
- Resolution px: Raymarine Axiom+ 9 1280x720 vs Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N 1024x600
- Sonar builtin: Raymarine Axiom+ 9 None built-in — chartplotter only; adding fishfinding requires an external sonar module and transducer via the 25-pin RealVision-type connector vs Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N MEGA CHIRP + MEGA Side Imaging+ + MEGA Down Imaging+
- Gps type: Raymarine Axiom+ 9 GPS, GLONASS, BeiDou, internal ceramic chip antenna, SBAS (WAAS in the US) vs Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N Internal GPS receiver with trackplotting; Humminbird Basemap preloaded (10,000+ lakes plus US coastal)
- Touchscreen: Raymarine Axiom+ 9 true vs Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N false
- Networking: Raymarine Axiom+ 9 RayNet Ethernet (10/100 Mbps), NMEA 2000 (DeviceNet), Bluetooth 4.0, Wi-Fi 802.11 b/g/n, USB Micro-B, microSDXC vs Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N Ethernet (5-port switch compatible), NMEA 2000, Bluetooth, Wi-Fi, One-Boat Network
- Preloaded charts: Raymarine Axiom+ 9 None on base SKU E70636; LightHouse Charts North America on SKU E70636-00-102 vs Humminbird HELIX 9 CHIRP MEGA SI+ GPS G4N Humminbird Basemap (10,000+ lakes plus continental US coastal coverage); LakeMaster/CoastMaster/Navionics compatible but sold separately