We have all been told about the phenomenon of prop walk. While I agree that I do not need to know how & why but it would be something to talk about and would surely impress at the next social evening.
As I see it each blade of the prop travels the same distance port > starboard as it does starboard > port so it should be in balance. So why does it walk ?
This effects power boats more than yachts due to I suspect the keel.
So its over to the prop prof's