The app can connect in wifi to the NMEA 0183 feed of your navigation system and display the data on your Android device. SailGrib WR adds performance data calculated in real time to the NMEA feed.
For example, you can monitor your efficiency versus the polar that will be calculated based on the polar chosen for the last routing, your speed through water (STW) plus your true wind angle (TWA) and speed through water(STW).
If you have a NKE navigation system, SailGrib will publish back these performance data to the NKE bus. These data become accessible on Multigraphic displays