Raymarine Wireless

Connect your Raymarine Wireless Instruments
to your Phone, Tablet or Laptop

If you have Raymarine Wireless instruments on your boat, here's how to connect them to your phone, tablet or laptop over Wi-Fi, so you can use them with your favourite navigation apps.

You need to have a T122 Wireless Interface as part of your instrument system, as this lets the instruments interface with other systems over NMEA0183. You will also need an NMEA Wi-Fi Gateway to enable the Wi-Fi connection.

Mount the Wi-Fi Gateway where it will give a good Wi-Fi signal to the users, typically around the cockpit or chart table. Then connect to the Raymarine Wireless Interface as shown in the diagram and table below.

 Connect Raymarine Wireless instruments to Wi-Fi

 Wi-Fi Gateway
Raymarine T122
12/24V +
 Pwr +
12/24V -
 Pwr -
 In A
 NMEA Out +
 In B
 NMEA Out -
 Out A
 NMEA 2 (or 1) +
 Out B
 NMEA 2 (or 1) -


We have shown a common power supply being used for the Wi-Fi Gateway and the T122, but if they are mounted some distance apart you may prefer to use separate power supplies for each device. Also, the T122 has two NMEA inputs labelled NMEA1 and NMEA2. These are identical, so if one is already in use (for example by your GPS), just use the other for the Wi-Fi Gateway. What you cannot do is have two instruments sending data into the same input port. The output port can be split out to feed a number of devices - typically 3 or 4, but this varies according to the instruments.

There is no configuration for the T122, and the default settings for the Wi-Fi Gateway will work without needing changing. If your app is sending data back to the instruments then you will need to configure the app to connect using TCP, but if it is just receiving data then you are free to use either TCP or UDP.

NMEA sentences are sent and received by the Raymarine Wireless system as in the table below. Sentences are only sent if there is data. Also, if the Raymarine system goes into power saving mode, it stops processing NMEA data.

 Sentence Content
 DBT  Depth below transducer (ft, m and fathoms)
 N  Y
 DPT  Depth below transducer, transducer offsets to keel and waterline, maximum depth range scale (m)
 Y  Y
 GLL  Position, fix time (UTC), fix validity flag, fix mode
 Y  Y
 HDG  Compass heading, compass deviation, magnetic variation
 Y  Y
 HDM  Magnetic heading of the vessel
 N  Y
 MTW  Water temperature
 Y  Y
 MWV  Apparent and true wind speed and angle
 Y  Y
 RMB  Origin and destination waypoint ID, destination waypoint position, bearing and distance to destination, destination closing velocity, cross track error, arrival status, fix mode and validity flag
 Y  Y
 RMC  Position, course and speed over the ground, fix date and time (UTC), fix validity flag, fix mode, magnetic variation
 Y  Y
 VHW  Vessel heading (True and Magnetic) and speed through the water (knots and km/hr)
 Y  Y
 VLW  Total and trip logs for distance over the ground and distance through the water
 Y  Y
 VWR  Apparent wind speed (knots, m/s and km/hr) and angle
 Y Y

Some displays (e.g. T110, T210 Maxi and T215 Maxi) have the ability to have custom data displayed using the PTAK proprietary NMEA sentence. The format of the PTAK sentence seems to have been removed from the web, but some software such as Expedition supports this functionality. My guess is that since Raymarine bought TackTick these features have either been removed, or at least are no longer documented, to keep the range as a basic, entry level system that doesn't detract from their higher end products.

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