There is also several
hardware available to transform other data protocols like NMEA2000,
Seatalk etc. to NMEA0183 via
serial or
WiFi which is needed to transfer data to a computer because
computers understand
serial and
WiFi data but not the CAN protocol used by the other
marine data protocols.
So if your depth
transducer does not send NMEA0183 you will need such a transformer.
Gerhard