How is galvanic corrosion of the propeller prevented?
Galvanic corrosion arises when dissimilar metals are electrically connected in water; the anode is the part that volunteers to be consumed. Rapid anode erosion is a sign that the system is overloaded rather than working.
Why it works this way
The usual cause of overload is stray current. Replacing anodes without measuring is a dressing rather than a cure — the underlying circuit keeps consuming whatever is fitted next.
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Serkan Kotel · independent yacht surveyor · IIMS · ABYC · MCA
