Luc wrote:
does a fish finder use the same transducer as a simple depth sounder?
It would be handy to be able to use the same transducer, since changing
them out is a chore, and involves hauling out the boat.



The fish finders I see use a 'transom mounted' transducer.
I don't think this is a good spot on a sailboat like mine...with the
rudder hung on pintle & gudgeon, and the outboard mounted on it's bracket.
I'd want the in-hull type I could mount in my cabin just forward of the
keel box. (cut down on turbulence)