"Len Krauss" wrote in message ...
So short of some programming to fake it (convert NMEA
to Seatalk), I don't think there's a workaround. I wasn't willing to go that
route, and it had the shortcomings descibed in other posts.
Len


I had the same problem on my boat. So I made my own bidirectional
SeaTalk-Nmea Bridge that can fake gps SOG to Boat Speed and send it
to SeaTalk.
To anyone who is interested have a look at

http://www.tklinux.de/inhalt_e.html