How do big ships float?

Big ships can float because they are lighter than the water they push aside, it's like a balloon floating up in the air.

Imagine you're playing with your toy boat in the bathtub. When you put it in the water, it floats because the water pushes up on it, that’s called buoyancy. Now imagine the ship is like a really big, heavy toy boat.

Ships are built to be wide and hollow, which means they can hold lots of things (like toys, people, or even cars) without getting too heavy. The more water a ship pushes aside, called displaced water, the more it can carry.

Think of it like this: if you put your toy boat in the bathtub and fill it with marbles, it still floats, but if you drop in too many marbles, it might sink! Ships are like that big toy boat, they float as long as they don’t push aside more water than their weight.

So even though a ship is huge and heavy, it’s also really good at pushing aside lots of water, and that’s how it stays on top of the sea.