I agree with Roger. Provided the through-hull fittings are isolated electrically from everything else then things should be fine. I learned the hard way with my first boat, a Hurley 22. Thinking I was doing the right thing I comnnected the seacocks together with an “earth” wire; not a good idea as the fittings all suffered severely from electrolysis.
Ian Culley
B32 ‘Another Fantasy’
