They're distinctly different physical phenomena. Surface waves are like spring-mass systems where gravity acts as the spring (hence they're also called gravity

They're distinctly different physical phenomena. Surface waves are like spring-mass systems where gravity acts as the spring (hence they're also called gravity waves https://en.wikipedia.org/wiki/Gravity_wave https://en.wikipedia.org/wiki/Gravity_wave). They can't exist in a homogenous medium, like underwater approximately is. Since they're travelling waves, they carry energy when they travel away from the boat, so it's a source of energy loss.