J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Shopping Instruments, GPS Data on ST60 Speed display

If you go TackTick, you don't have to get it all at once. Start with the T122 NMEA interface and a single T111 dual digital display. Use your existing sensors and NAVMAN displays as the "NMEA brains" to drive it. You can get speed and depth on the single dual digital display that way. Upgrade the other stuff later when you win the lottery.