Eli5: How do they effectively test scale models of giant ships in water? Doesn’t the water behave differently in the small vs large scale?

Question

Eli5: How do they effectively test scale models of giant ships in water? Doesn’t the water behave differently in the small vs large scale?

In: Physics

Answer 1

They see how it holds up to a toddler in a bath tub. If the toddler can’t sink it or break it, then they scale up.