Electric Shock Drowning by docks and in marinas is a big unknown issue. The Electric Shock Drowning Prevention Association is a non-profit that works to raise awareness and prevent drowning due to electric shock. They post signs at hazardous locations to keep people out of the water, and those signs are produced by Wrap City Graphics.
You can visit the ESDPA’s website for more info, and Download the Order Form to order these signs.