First a bit of history. On my N46, my transducer would display random numbers in shallow water and or tied to the dock. I replaced the transducer, problem gone.
Now, my 2008 AT's Airmar transducer started displaying random numbers in shallow water and or tied to the dock. I do have a secondary, independent, glued-in depth sounder that seems to be accurate.
I had the diver clean the Airmar's face every time he did the hull, no change in reliability. This haul out, I checked the face of the transducer, clean as a whistle.
I had the Airmar transducer replaced. When I get back to the boat, I hope to discover, problem gone.
What I would really like is, a depth sounder forward of the engine room, for poking around in the shallows, knowing at other than minimum speed it would be not be accurate.
Did Noah have a get home-engine?
Which weather app did Noah and Columbus use?