I have heard from Sailnet articles and other sources that some depth sounder transducers can be installed inside of a hull in such way that you don't have to drill a hole in it. The requirements are that the hull not be cored in the area you locate the sounder, and that you permanently afix the device using
epoxy.
My existing depth sounder, which uses a thru-hull mount for the device, has stopped functioning. As it is a very old unit, I want to replace it. However, I'll need to haul the boat to do it. I don't plan on hauling the boat until the coming winter, but I also don't want to be without a depth sounder until then. Hence, I was hoping I could use this technique to put one in now. (I can't use a transom mount due to the shape of my stern.)
Can anyone comment on the pros and cons to this? I was thinking of using
Raymarine's ST40. Anyone know if the technique would work with this unit? If not, is there a particular unit that it would work with?
Thanks in advance for your feedback.