Corrosion Currents kill boats by rotting hulls anodes, props etc. Here’s a quick 101 on what these currents are.
* Earth Leakage: comes from faulty equipment or wiring.
* Imprinted Leakage: is interference from electronic equipment that is carried the boat’s wiring.
* Galvanic Currents: are caused by the chemical reaction of metals in water
If you’d like to know more, there’s a helpful article “wot I wrote” HERE