Steven Shelikoff wrote:
On Mon, 07 Jun 2004 16:00:18 GMT, otnmbrd wrote:

This is one of those explanations which I feel may have an effect on
propwalk amount, but is not the "root" cause of propwalk.
Reason ... you get propwalk ahead and astern. When going ahead, the wash
does not push against the hull.


I don't think there is a "root" cause of prop walk. It's just a sum of
many factors, some of which even counteract eachother which is why you
can't be sure of the direction of prop walk just by which way the prop
turns.

G I disagree. My feeling is rotation in a water medium is the root
cause. The amount of propwalk however is dependent on many factors, some
of which can and do counteract it's effect.
On 9,999.99 out of 10,000 boats fitted with right hand fixed pitch
props, starting at DIW with no wind and current ..... the boat will back
to port and vice versa for left hand props.
However, add wind, current, headway, sternway, turning, a BARN door
rudder, etc., etc., and you are absolutely correct .... that boat may go
in the opposite direction at the least opportune time, if you are not
aware of the possibilities.

otn