Eli5: why and how do longer waves travel faster than shorter waves?

Question

For context, on sailboats, longer hulls are said to be faster because they create a longer wave on the water. Assuming they don’t travel faster than the wave they create, why would the longer wave be faster than a shorter one ?

In: 16

Answer 1

Also there are two different waves. The bow wave you see angling away from the boat is one, it’s called a transverse wave. But the wave involved in the hull speed is a longitudinal wave. It’s inline with the boat, font to back. On a speed boat you can see it looking astern. The water goes down and then up, sometimes higher than the transom.