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post #2 of Old 08-28-2012
TwoD83
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electronic rust proofing

It's called cathodic protection and yes it does! Ships use it to protect their hulls. It applies a voltage to the hull that counteracts the voltage that would be created by electrolytic corrosion. On ships, when used in conjunction with zincs, it is highly effective. I don't know of any units that are designed for boats, but if you find one, definitely a good idea for a steel hull! If you're electronically inclined, you may be able to design your own.
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