NMEA depth transducer

[CVL]

Many thanks for the reply and your advise.  They look like nice pieces of kit (but not cheap )
Mine is a small sailing boat with a tube bonded to the hull for a normal analogue transducer.
It is probably best for me to get a normal depth instrument with a display and NMEA output.

I saw recently, that Airmar now produces their P79 transducer in a version for NMEA 0183 and N2K. I found it with a VPC'iste in France for 300€ :
http://www.compass24.fr/navigation/appar...=Ig8Q4mYRU

I have a P79 coupled to a very old Garmin Plotter on my boat, I will try to change only the transducer and wire it directly to RPi with OP, so I won't need to fire up the plotter just to have sounding.

fair winds
Christian