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

If you want to know more I suggest the book Scale by Geoffrey West.
In the old days, they just had to test it in real size. There was no other way.