Why Don't Metal Ships Rust?

Metal ships don’t rust because they’re wearing special clothes that keep them dry and safe from water.

Imagine you're playing outside on a rainy day. If you don't wear a raincoat, your clothes will get wet and maybe even start to feel cold and uncomfortable, kind of like how rust feels when it starts to grow on metal. But if you wear a raincoat, the water slides off easily, and your clothes stay dry.

Metal ships are like you wearing a super strong raincoat, made from special materials that stop water from getting inside. These materials are called protective coatings, and they work just like a raincoat for metal.

• The coating is like a thick, smooth layer that keeps water from touching the metal underneath.
• Water needs to stay in contact with metal for long enough to start making rust, kind of like how you need to sit in the rain for a while before your clothes get really wet and cold.

So even though ships are made of metal, they’re not getting all wet and rusty because they're wearing their special raincoats!