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post #2 of Old 01-03-2004
GordMay
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Rudder anode question

A sacrificial zinc anode must be in contact with the seawater to be effective.
A single zinc anode, of the appropriate size, will protect all immersed metals that are electrically connected (bonded) to it.
Rudder shafts often have a poor electrical connection to the boats bonding system, due to high resistance through the rudder bearing.
Regards,
Gord
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