[Sonar] Swimming around the WYC docks

[Thomas Brown]

All:

I noticed some people swimming around the WYC docks the other day.

Just a reminder that in fresh water,  we need to absolutely be careful
about electric shock surrounding an electrified dock.    Even if we are not
hanging onto a loose electrified wire somehow,  any ground fault to the
water where someone can get electrocuted is around 100 feet in radius!

If someone accidentally falls into the water around the dock make sure they
can speak to you when they are in the water.   One of the initial symptoms
of this type of electrocution is total paralysis,  including speaking
ability.

Sometimes people from away  (salt water locales) are not familiar with
this.  This type of electrocution does not normally occur in salt water
because in salt water,  'we' are not the least path to ground.   In fresh
water,  'we',  being fairly salty,  become that path to ground and
therefore expose ourselves to extreme risk.

When I lived up in Bayfield,  there was an unfortunate incident where
someone fell off a boat during a party.  Everyone was laughing about how
they fell into the water,  but the person who fell in was unable to speak
and slipped below the surface permanently.   That person did not survive.

Thomas Brown
"Maximizing Business by Minimizing Surprises"
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