BoatWiki - Definitions
An anode in boating terms can be described as an attachment that absorbs corrosion below a waterline due to electrolysis. This is a major issue with all types of watercraft and must be closely monitored. Anodes are made of zinc, aluminum, or magnesium depending on the environment where utilized.
When dissimilar metals are exposed in regular or salt water, a process of electrolysis takes place causing a corrosive effect. An anode is an attachment that sacrifices itself for the benefit of other metals. Zinc and aluminum are designed for salt water and magnesium for fresh water. They come in all sizes, shapes and forms to accommodate propellers, shafts, struts, rudders, through hull fixtures and outdrives.
Anode placement is a crucial issue for various types of boats. In most cases, the manufacturer will have already made such installations. It is otherwise advisable to seek the assistance of a qualified marine surveyor for guidance.
Boaters should pay close attention to the condition of anodes in order to avoid costly repairs. This should be done on a periodic basis during times of haul out or trailering.
Please assist your fellow boaters by wiki-sharing any comments or experiences regarding this subject.
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9/8/2022 - Page initiated by Team BoatWiki.