Derek, We folks in Fresh Water have a much more important concern than Zinc Loss.. IMHO. Fresh water marinas and the boats in them MAY be responsible for many Deaths.
While NOT likely to be a problem in Salt water, Fresh and brackish water sailors should AVOID swimming in the waters between boats in marinas and dockages where electrical service is used ! Encourage others NOT to swim in those locations as well.. It's thought that many deaths attributed to DROWNING .. May actually be "Electrical Shock Drowning".. See the following articles.. http://www.iaei.org/magazine/?p=1112 and.... http://boatingsailing.suite101.com/article.cfm/electric_shock_drowning Fresh and brackish water presents HIGH Impedance (resistance) to current flow. A "Body" has a much lower value. A "Body" between an AC source and Ground represents a Low Resistance.. which means.. Current flow through that Body. And it takes a very small current flowing through a human body .. to KILL ! While the marina or dockage May be protected, The boat NEXT to you may NOT ! The Best answer is.... NEVER allow Anyone to swim in a Fresh water dockage ! PERIOD ! Regards, Ralph Ahseln "Oblio' Gresham OR ----- Original Message ----- From: Derek Atkin To: [email protected] Sent: Wednesday, June 10, 2009 5:41 PM Subject: Re: [IC27A] Zincs In doing a little reading. My boat is in fresh water, in which case zinc is not reccomended. Folks are talking about magnesium. Should I even worry about it in the great lakes for a boat that spends 4 months in the water? Derek.0 _ .
