Version 7.4 of the Navionics Boating App now supports the reception of wireless NMEA Depth and GPS data. The following NMEA sentences are received:
- DBT (Depth below transducer)
- DPT (Depth)
- GGA (Position)
- GLL (Position)
- RMC (Minimum GPS sentence includes Pos/Time.COG/SOG)
- VTG (COG and SOG)
- ZDA (Time and Date)
Not all sentences need to be received in order for Sonar Charts logging to be successful. For an iPhone or 3G iPad which already has its own GPS, you just need a depth message, either DPT or DBT. For Wi-Fi only iPads and iPod Touch units, you also need GPS data, so either RMC on its own or VTG and either one of GLL or GGA.