My SS keel boats on my 1981 Hunter 22 are corroding. Is this caused by some stray current in the water? Maybe a bad reaction to the ablative paint? Should I coat them first, put zinc somewhere? Why is this happening? I feel it should not happen at all. Hasnt happened like this before. I have had keel bolts corrode and break before, but not 3/4 of them in less than one summer. Thoughts? See photos. The heads are basically dissolving off.
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