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I have just seen an online ad for a Universal Zinc Anode, one that's on a wire that you hang over the side while moored. Presumably you connect the wire to your propshaft, I'm not sure.
On this site I have read Don Casey's words "There is an unfortunate misconception that a sacrificial anode can be mounted anywhere, even hung over the side on a string, and it will still perform its appointed duty. That is dead wrong! For an anode to provide any protection, it must be in electrical contact with the metal being protected."
My question, if anyone can please help, is this: will a free hanging anode work in this way if it is connected by an electrical wire instead of a string? Is anyone using one? (I've tried attaching a photo but keeping getting "invalid file name")