I follow battleship New Jersey on YouTube. One of the recent topics is how the hull around the propellers can corrode more than other areas of the hull. Because of this, the navy installed sacrificial anodes.
Why would a large ship corrode around the propellers more. How to anodes prevent this?
In: Chemistry
Early Batteries were basically just two different metals put into salt water. They are empty once one of the metals has been eaten away completely.
Ships‘ propellers are usually a different metal than the hull.
To avoid your ship’s important parts becoming a giant battery and getting eaten away, you have to put a little bit of a different metal on it so it becomes eaten away instead.
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