Garmin fishfinder NMEA

Just noticed that my Garmin fishfinder has a NMEA wires. What would this be for? What does it interface with? Sorry for the stupid question but yet again, I've never used one.

Some fishfinders/sounders will output Water Temp, Depth and even Water Speed via an NMEA interface.
Not likely to be of use in a RIB console since all of the information is readily available in front of you.
Andy

Some fishfinders/sounders will output Water Temp, Depth and even Water Speed via an NMEA interface.
Not likely to be of use in a RIB console since all of the information is readily available in front of you.
Andy
Thanks Andy, that's what I thought. I only have an old Garmin 120 gps hooked up to the radio. Couldn't think what kind of info would be useful to transfer.

The f/f may also accept speed data from the GPS so that it can be displayed on the screen. Useful if you have a flybridge or second station on larger boats so you get the main data displayed in two locations.

The f/f may also accept speed data from the GPS so that it can be displayed on the screen. Useful if you have a flybridge or second station on larger boats so you get the main data displayed in two locations.
Bloodyhell Erin! Are you a mind reader? :D Was just talking to my dad about updating his electronics and what to have on the flybridge to indicate speed and depth.
Got 7 numbers for this Saturday? :thumbs:

Got 7 numbers for this Saturday? :thumbs:

Yep, but I aint' telling you cos it'll halve my winnings :D