Anyone know of a device that does this? I am looking for a winter
project and putting together a NMEA / Seatalk multiplexer to TCP/IP
converter sounds like fun.

1 - It would make the connections to a laptop a breeze - no RS232, no
USB converters just a network cable.
2 - With an RF interface I could hook into the data with a WiFi PDA.
3 - If web enabled then no special software on the Laptop or PDA to
display and control the seatalk, just use the regular browser.

Ian