2nd Dog Watch, I have the same issue at our dock
but am out for the winter. I am 95% sure my neighbor is dumping DC into the water
(and he said it's quite possible). So here is how I am handling it. While we are out I'm going through my DC and AC systems looking for any faults. I'm about half done with nothing showing up yet. Our marina has a known crappy ground as well so I'm also installing an isolation transformer since I have an aluminum saildrive
that could easily become an expensive anode. Not to mention 90% of the boats use an improper anode material (zinc) for our fresh water
location which should be magnesium or aluminum
. In the Spring I'm going to help my neighbor go through his boat looking for problems. I have found folks more receptive to offers of help than threats.
Now if said neighbor were an ass I'd get everyone within 50 feet of him to write a letter to the management, split the cost for a marine
electrician to document the issue and then if the neighbor was still dug in with denial I'd consult an attorney. I'd hope he'd cave to a mob
of angry neighbors. I'm not one to consider legal
action if I can any other means to solve the issue. Remember the burden is on you to prove your case in a court of law. You have done some preliminary work but need a subject matter expert to present facts. All of this is likely more expensive than fixing the problem.
I wonder if there is a public service
area that could document a safety
Honestly though I think to win you'd need to prove yourself innocent and that specific boat guilty and in a marina might be tough. This would be small claims too where you don't need an attorney necessarily. I'm not in the legal
field nor do I play one on TV but these are my thoughts. I wish you the best of luck getting this resolved quickly and amicably. SC