PS Advisor

February 2013 Issue

Attack of the Zebra Mussel

Does mussel fouling affect mooring chain strength?

For 20-plus years, I have removed my mooring buoy from the water at the end of the sailing season on Lake Champlain. This year, however, I was surprised to find that my mooring chain was totally covered by zebra mussels. The 3/8-inch chain was about 3 inches thick with mussels when I hauled it up! Do the zebra mussels affect the chain strength or its life expectancy?

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