I should have given more info.
Yes, this transducer is connected to a Garmin chart plotter. It was working for few months, after I bought the boat 2 years ago. Later, it started to give false readings, or no readings.
The cable from the transducer runs up around the wall somewhere and ends up in the back of the plotter.
I looked up on the web this model (Airmar B150M 12degree) and it is available. What I could not figure out is do I buy stainless steel, or bronze? My boat is steel.
What is the material I need to use to seal the space between the unit and the hull? Can I use the existing elements for the installation, or everything needs to be new? I have never done this job, so I am not clear on everything.
Finally, can I, should I, look into newer models for replacement, or just buy the same model? I donít need anything special, just a solid depth measurement.