Prop shaft locking nuts

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mainesail

#15
The shaft anodes on a sailboat should be placed as close to the strut as possible without impeding flow of water to the cutlass bearing. Usually about two finger widths in front of the strut is fine. Placing them further away from the strut creates shaft imbalances and "shaft whip" (jump rope effect) when the anodes wear unevenly.

Also most anodes are not installed properly to allow them to do their job...

Anode Installation - Best Practices

-Maine Sail
Casco Bay, ME
Boat - CS-36T

https://marinehowto.com/

Bill Shreeves

Mainesail, once again, great info on the anode install best practices!
The only thing that always works on an old boat is the owner...

Bill Shreeves
s/v "Begnnings" 1987 Shoal Draft #333
M25XPB, Worton Creek, MD