Bob,
You have a problem that needs fixing. I discovered recently that current in fresh water is different than that of saltwater. The biggest problem is that stray current(shore power) from a boat in fresh water can kill someone swimming close to the boat. This is NOT the case when swimming in saltwater.
Reference this article from BoatUS:
The Article
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Fresh Water + Alternating Current = Danger
Kevin Ritz lost his son Lucas to ESD in 1999, and he shared his story with Seaworthy in "A Preventable Dockside Tragedy" in October of 2009. Since his son's death, Ritz has become a tireless investigator, educator, and campaigner dedicated to preventing similar tragedies. "ESD happens in fresh water where minute amounts of alternating current are present," Ritz said.
What does "minute" mean exactly? Lethal amounts are measured in milliamps, or thousandths of an amp. When flowing directly through the human body, these tiny amounts of current interfere with the even smaller electrical potentials used by our nerves and muscles. Captain David Rifkin and James Shafer conducted extensive testing of all aspects of ESD for a Coast Guard study in 2008, including exposing themselves to low-level currents in fresh water. "Anything above 3 milliamps (mA) can be very painful," Rifkin said. "If you had even 6 mA going through your body, you would be in agonizing pain." Less than a third of the electricity used to light a 40-watt light bulb — 100 mA — passing directly through the heart is almost always fatal.
I was surprised, as an incident in my area happened last year, in fresh water and it was a child. For more info on this:
https://www.google.com/search?sourc...2i10i30l5.0.0.0.15059...........0.JPg0gSS1J7c
There are differences, your job is to recognize them & plan accordingly.....
CR