I sure hope that the cause of the electrolysis was identified and cured. Yikes.
(Being in a smaller YC moorage that has invested big $$ in new dock GFCI outlets in recent years, I am really curious about where the boat is moored. Just write to me directly, tho. Click on my site name for the private "start conversation" option. This is very interesting because I am the Port Capt at our club, and some of our members on the waiting list moor at other marinas.)