Electrolytic Corrosion: Also known as stray current corrosion, this occurs when dissimilar metals are in contact with an electrolyte, such as water, and an electrical source. The result can be a rapid reaction that can cause significant metal damage in a matter of hours or days.​

Galvanic Corrosion: This occurs when two dissimilar metals are directly connected, causing the lesser of the two metals to corrode.​

Marine Corrosion: This occurs when the salt in air and seawater leads to the chemical degradation of exposed metal surfaces.​

Microbiologically Influenced Corrosion (MIC): This occurs when microbes are involved with corrosion.​

Anodes are designed to help prevent corrosion from happening. They are typically ​made of zinc, magnesium, or aluminum and are usually located on trim tabs.​