Brown Slime On Main Anode

[Alanprib]

I have just lifted my yacht to re-antifoul and a brown slime on the main anode.

Does anybody know has caused this brown slime on my main anode.

There is some erosion on the other anodes especially the closest anode to the propeller but no slime.

Any information would be appreciated.View attachment 148623

View attachment 148623

 

[VicS]

I reckon it is not doing anything.
What is it bonded to ?

 

[Alanprib]

[QUOTE="VicS, post: 8116081, member: 1
I reckon it is not doing anything.
What is it bonded to ?
[/QUOTE]
It is bonded back to the engine frame and the main earth with an 8mm copper cable with crimped lugs on each end. A full continuity check was conducted prior to launching in June 2020.

The small sleeve anode on the propeller shaft has eroded as expected. There is some light erosion on the pear shape anode (the anode covered with slime) and the barrel type anode. The slime was only on the pear shaped anode.

 

[Tranona]

That anode is not necessary. There is nothing in the engine that needs protecting. Your shaft anodes are doing the job of protecting the prop.