Raymarine e9w sonar transducer

[Seastoke]

Hi all i have a e9w and want to fit a transducer to give fishfinder and depth sounder combined it has to be through the hull as we have shafts . so the question is does some one make a replica or if i have a raymarine one do i have to buy a seatalk kit or can i get one that works on nmea ,thanks for help

 

[omega2]

http://www.airmartechnology.com/

Got to be one there.