Now, you can calculate yourself, e to the power minus pi it will become equal to 0.004. In other words, when you go down about half the water length, suppose this is this thing, you go down, everything comes down at some point here you will not even feel there is a wave there because everything decays exponentially. This is exactly why if there is a storm up, you are diving down, you would not feel there is a storm up. And second thing is that everything happens at this area most because largest velocities, everything is concentrate near the surface, unfortunately ships lie at the surface