Thread: Zinc or copper
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Old 03-19-2016, 09:18 AM   #9
Portage_Bay
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City: Coupeville Wa.
Vessel Name: Pacific Myst
Vessel Model: West Bay 4500
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Copper won't work as well as zinc to protect your boat's metal parts. There are any number of good articles on the net and good books to explain corrosion. The image below comes from

Metal Parts for Boats

The chart is easy to use. Metals above and to the right of a given metal, in this discussion copper, will be protected. Metals below and to the left will be sacrificed.

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