Reduce your risk of collision with this fully integrated Class-B AIS transponder - essential for navigating today's busy shipping lanes and congested ports.

  • Class-B Approved
  • Send & Receive
  • Integrated Solution
  • Multiple Networking Connections
  • Waterproof
  • Lightweight
  • Low Power Consumption


Compact in size, lightweight, fully waterproof, with low power draw and featuring multiple connections, the NAIS-400 is ideal for networking with any NSS, NSE or NSO chartplotter / multifunction display and Simrad RS VHF system.

The NAIS-400 ensures that you are seen and can see on the water by sending a signal to other vessels with your navigational data, whilst you receive data from other vessels. This allows you to plan any necessary avoidance manoeuvres well in advance.

Networks with your NSE and NSO chartplotter / multifunction display and your VHF for a fully integrated system.

Compatible with NMEA2000® / NMEA0183® / NMEA0183® Multiplexing / USB.

The Simrad NAIS-400 AIS is Class-B Approved.


Networking Connectors

NMEA 0183 Interface 38400 k Baud output, 4800 k Baud input
Connectors VHF antenna connector (SO-239), External GPS Antenna (SMA), USB type Mini-B plug, NMEA 2000 standard connector, 12 way power input/NMEA 0813/External switch


Operating Temperature -25°C to +55°C
Waterproof Standard/rating IPx7
Product Width 100mm
Product Height 42mm


Power Consumption 170mA at 12 VDC
Power Supply (Supply Voltage) 9.6 - 31.2 VDC


Transmitter Power Output 33dBm +/- 1.5dB

GPS Navigation

GPS Receiver Channels 50