The GN70 is a great addition to the current range of IMO compliant Simrad Global Navigation Systems engineered for today's professionals. The GN70 has a colour display and is designed to work together with a range of existing IMO type-approved GPS smart antennas and GPS compasses.

  • Convenient data interface using SimNet and NMEA 2000 Network including simple plug-and-play connectivity to other N2K enabled systems
  • Rotary knob for easy ‘push to enter’ functionality
  • IMO compliant
  • Dedicated hot keys for position, navigation, heading, AIS and MOB for easy access
  • LAN can be used to output NMEA 0183/IP messages
  • 5” bonded display for clearer, fog-proof operation
  • 16-bit color TFT display provides wider viewing angle
  • GN70 can be used with a GPS compass, which has dual IMO compliance certification for use as a primary position AND heading device
  • GN70 can also be used with  the HS80 GPS Compass
  • External RTCM correction for DGPS mode with optional MX610JB junction box.


The GN70 is a versatile global navigation system that offers a NMEA 2000 (N2K) interface for easy plug-and-play connection to high performance modules such as the AP70/80, Class B-AIS, and other navigation systems that are N2K enabled. The GN70 can be used as a single display, or multi-unit redundant displays. The NMEA 2000 interface means the user can change things like backlight settings across all Simrad NMEA 2000 capable electronics on the bridge, or switch to a different heading source all from the GN70 display.

GPS Antenna Options
The GN70 is a type-approved navigation system with the MX521A or MX525A/MX5B D/GPS antenna (via the MX610JB –NMEA 2000 to NMEA 0183). The GN70 is also compatible with the HS80 and MX575C DGPS compasses (via a N2K connection or through the MX610JB).



Housing Rear housing - Aluminum, Front housing - Plastic


Display Type 16-bit color TFT
Display: Backlighting CCFL
Display Resolution [pixels x pixels] 480 x 480 (H x W)


Mounting [S,F,B] In-Dash (standard) U-bracket (optional)
Operating Temperature -30°C to 55°C (22°F to 131°F)
Operating Temperature Stored 10 - 24 VDC
Waterproof Standard/rating IPX4
Product Width 9.06 in \ 230 mm
Product Depth 1.61 in \ 54 mm
Product Height 5.6 in \ 144 mm
Product Weight 1.2 Kg (2.7 lbs.)


Power Consumption 0.7A at 12 VDC with backlight on, 0.4A with backlight off
NMEA 2000 Load Equivalency Number 1 network load (50mA)

GPS Navigation

GPS Receiver Channels 32
Navigation: Routes 200
Navigation: Waypoint Storage 5000
Receiver Type L1,L2 C/A code 1.575 GHz & 1.602 GHz
GPS Antenna Type GS70 Antenna (N2K), high-sensitivity GPS+WAAS (Americas) or GPS+EGNOS+MSAS (non-Americas)

Networking Connectors

NMEA Output NMEA 2000, NMEA 0183 (via the MX610JB)