[Pisces]

Originally Posted by Paul_IronCoffin

This is really cavitation, where the propellor attempts to move more water per revolution than there is water available; at low speed/high engine demands. It's noisy - very noisy - and causes bubbles to be created (a la Boyles Law).

I see, that makes sense. If it wasn't like the analogy of blinding him with a flashlight in a pitch black room. Now he'd know where to go.

I was thinking more like the displaced water creating sort of a horizontal mushroom cloud deflecting/distorting the active wave. But I don't know if that works at all in RL.