4/5/2024 0 Comments Sears aluminum boat 1960Many aluminum boats suffer from corrosion in the shaft tube.įreshwater boats with outboard motors seldom have corrosion problems. Zincs must be examined and replaced because they are designed to corrode away.Įspecially when purchasing used aluminum boats, care should be taken to inspect the boat’s shaft tube. The Zinc will corrode in the electrolysis process and protect the aluminum hull. The solution is to have sacrificial Zinc anodes attached to the hull. Even a copper penny lost in the bilge can cause corrosion. These can set up corrosion by electrolysis. Saltwater is a much stronger electrolyte than freshwater, and boats often have stainless steel or bronze hardware attached to the hull. Electrolysis occurs with two dissimilar metals are in an electrolyte. The biggest cause of corrosion is electrolysis. Marine Aluminum is chosen to be corrosion resistant, but corrosion can still cause damage.Ĭorrosion in saltwater is a major problem, but even freshwater boats can suffer from corrosion. What’s The Resale Value On Aluminum Boats?.General Pros and Cons of Aluminum Boats.
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