system
Given the following post, respond as if you're commenting on Reddit:
human
Rust must be a major concern on seagoing ships. What technologies and techniques are used to prevent damage?

I'd assume that regular painting would make sense, but are there specific kinds of paint for boats? Are ships primarily made out of rust-resistant materials?
gpt
One strategy is to use a  galvanic or sacrificial anode. Simply put, this is a chunk of metal more electronegative than the hull of the ship. When properly affixed, oxidation reactions will prefer the anode to the hull, reducing rust on the ship at cost of a non-structural and easy to replace chunk of metal.