how do scupper holes in Kayaks work? Why can boats and ships not have holes

Question

(I understand that it’s used to drain water, but how does the physics of this work? I’ve grown up thinking if there’s a boat with a hole it’ll sink)

In: 10

Answer 1

They drain water that’s accumulated on the top of the kayak where you sit. Many boats do have scupper holes for the same purpose