Please do not swim within 50 yards of marinas or vessels connected to AC Shore Power due to the risk of Electric Shock Drowning (ESD). ESD results from the passage of typically low level AC - Alternating Current in freshwater through the body at a sufficient level to cause skeletal muscular paralysis. The victim is rendered unable to help themselves and they drown. If the electric current is high enough, electrocution can also occur. ESD is caused by electric current leaking into freshwater around boats & docks that are connected to AC shore power. Such electrical current leakage comes from faulty electrical equipment & wiring, & improper grounding in moored vessels & floating marina facilities. For more information click here or visit www.electricshockdrowning.org.