depthfinder

I need to replace my depth and speed instruments (original from 1979). What is the performance difference between a thru-hull and in-hull depth transducer? Is my 1970's fiberglass too thick to use an in-hull?

I have a Oday 272 (my first boat) and one of the things that I want to put on it is a depth finder. I'm the type of person who doesn't want to drill holes in his boat so I was looking at transducers that can shoot through the hull. Reading up on the problem I can find information but I have some...

I recently bought a new Humminbird HDR650 to replace my working "President" depthfinder which had a display that was too cloudy to read. I assumed that I'd just hook up the HDR650 to the exisiting transducer wiring but ran into this snag. The transducer cable has a multiple pin plug that only...