Strange shaft and anode question.

[Alpha22]

My boat is under repair, bo hoo!!!, but when finished it will have one bronze shaft and one new duplex stainless steel shaft. It has bronze rudders, props and through hulls. The trim tabs are stainless.

Currently there are two pear anodes above the upper ends of each shaft.

Is there anything I should do particularly in respect of the two different shafts?

I intend to renew the existing pear anodes as they are half gone and looking very scabby and passivated. They are internally bonded to almost everything!!!

I intend to add a shaft anode to each shaft...... about half way down????

I intend to put a disk anode on each trim tab. Top and bottom, or just on top???

Any other sage advice welcome..... other than buy another shaft!!!!

 

[kashurst]

despite the shafts being different materials with the right anodes it won't matter. If it's in the sea use quality zinc anodes, in fresh water use magnesium.
pear anodes as you have them
Shaft anodes are usually fitted about 6 inches in front of the P bracket
Trim tab anodes - one disc anode on top of each tab.

 

[Alpha22]

I can't believe I asked one straightforward question and received one straight forward concise answer..............

Come on chaps, what the hell is this forum comming to?????