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Old 25-03-2019, 08:59   #1
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Join Date: Mar 2018
Location: Northern Virginia
Boat: Beneteau Oceanis 46
Posts: 21
zinc versus aluminum galvanic protection
We sail out of Deale, MD about mid-bay on the Chesapeake and it was advised at a seminar recently that aluminum "zincs" were a better option for us than zinc "zincs" because of the lower salinity of the water. Three questions: at what point does this become true, if in fact it is true? And doesn't salinity vary from Spring with the heavier run off of fresh water to late summer? Last, if one of my "zincs" is aluminum and in close proximity to another that is zinc am I setting off a bad situation?
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