Yes, they are not galvanized and do not rust. That's why they're cheaper than the coated options. I will pass on the old boat owner's advice. We have the same problem with anchor chains. Go to a boat shop and buy "Zinc for Cathodic Protection". Small zinc metal rods that you attach to a propeller shaft, sterndrive, or other steel that frequently comes in contact with water. Available from 1 to 80 pounds. Throw a few pounds on every chain, wherever you store it. This won't stop the rust completely, but it will slow it down. And if you have access to the beach, simply attach the chains - one at a time! -- to the hitch and dragging it about a mile down the beach will get rid of most of the rust. For some time.
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