Damage to propeller

[fstbttms]

Originally Posted by kenbo

Do you see the pink spots as well as the pitting or are my eyes failing me again?

Tough to be certain with those pix but it looks like there could be some dezincification going on.

[boatpoker]

Originally Posted by fstbttms

It would be a rare boater indeed who admitted that source of prop corrosion might be his own boat.

Too true but the OP went to the trouble to buy a half cell and is learning how to use it. That is also rare.

[boatpoker]

Originally Posted by kenbo

I am no expert when it comes to this type of problem and it seems that you definitely have a problem.

I think I can see two different issues from your photos. The pink areas are dezincification caused by electrolysis..

Electrolysis cannot occur on a boat it is one of those catchy dock expert terms used by people without training in the matter. It is quite likely stray current corrosion.

[dm567]

I never said my boat was not at fault only that the results from the reference electrode didn’t show a problem

I will go through all the helpful questions/ comments left by forum members tomorrow