Question about sacrificial anode

peterjaw

peterjaw

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Good day, Captains,
I have moored my boat in marina for 5 months. I find that the sacrificial
anodes on my boat deteriorate quicker than those who moor on the other
side of the same marina. My neighbor boats have similar symdrome.

I wonder what kind of situations could be the reasons? Could it be my
boat's problem? Or the marina's infrastructure? Or both? Do you have solutions for this?

Thank you very much for any suggestions.
 
Peter, if I’m not mistaken, your boat has an outboard engine? If this is correct, then the only anodes you should have are the bar anode which is fitted to your outboard bracket, and the one or two anodes fitted to the outboard gearcase......if this is the case, the gearcase anodes should be out of the water when your outboard is fully tilted when berthed at your marina, and it’s only the bar anode that is immersed.

If this anode set up is correct, is it the bar anode that is deteriorating quickly? Of so, I think you may be experiencing stray current from the boat on shore power next to you.
 
peterjaw said:
Good day, Captains,
I have moored my boat in marina for 5 months. I find that the sacrificial
anodes on my boat deteriorate quicker than those who moor on the other
side of the same marina. My neighbor boats have similar symdrome.

I wonder what kind of situations could be the reasons? Could it be my
boat's problem? Or the marina's infrastructure? Or both? Do you have solutions for this?

Thank you very much for any suggestions.
Click to expand...

If yours are deteriorating then yours are working so that's good ,maybe others are not doing so on the other side of the marina. It happened to my anodes once it was a large metal live aboard that was berthed next to me- I moved.
 
AllanG said:
Peter, if I’m not mistaken, your boat has an outboard engine? If this is correct, then the only anodes you should have are the bar anode which is fitted to your outboard bracket, and the one or two anodes fitted to the outboard gearcase......if this is the case, the gearcase anodes should be out of the water when your outboard is fully tilted when berthed at your marina, and it’s only the bar anode that is immersed.

All above are correct. But there is still an anode on the transom stern, at the very bottom. This one deteriotates quickly also.

If this anode set up is correct, is it the bar anode that is deteriorating quickly? Of so, I think you may be experiencing stray current from the boat on shore power next to you.
I see. Is this avoidable? Or the only solution is to move away from shore power? (I don't need shore power anyway.
Click to expand...

This is the anode I mentioned above.

Anode.png
 
Last edited:
Mike k said:
If yours are deteriorating then yours are working so that's good ,maybe others are not doing so on the other side of the marina. It happened to my anodes once it was a large metal live aboard that was berthed next to me- I moved.
Click to expand...

I hope they work slowly. "Never do it today what you can do tomorrow."
 
AllanG said:
If this anode set up is correct, is it the bar anode that is deteriorating quickly? Of so, I think you may be experiencing stray current from the boat on shore power next to you.
Click to expand...

Unlikely to be the problem as the OP is not on shore power, so no circuit.

I would say it sounds more like the OP himself may have a stray current.
 
CLB said:
Unlikely to be the problem as the OP is not on shore power, so no circuit.

I would say it sounds more like the OP himself may have a stray current.
Click to expand...
Really? Why? I switch off everything when I left marina. I think the only device/equipment
still work (standby) are automatic bilge pumps.
 
Could be many things. Something incorrectly wired, or a bilge pump wire that is exposed and sitting in bilge water. I know one poster on here who found his seacock bonding was live. Strange things do happen.
 
CLB said:
Could be many things. Something incorrectly wired, or a bilge pump wire that is exposed and sitting in bilge water. I know one poster on here who found his seacock bonding was live. Strange things do happen.
Click to expand...
Oh, no. I don't want to be a detective again. I would rather to be a sailor (fisherman).
 
peterjaw said:
Oh, no. I don't want to be a detective again. I would rather to be a sailor (fisherman).
Click to expand...
;);)
are you sure we didn’t warn you about all the problems of boat ownership before you bought your boat? We must of forgot:)
I find there are two kinds of boat problems, practical and philosophical. The practical ones are when you are told you have a problem and this is how to fix it. The philosophical ones are when you are told you have a problem.
Guess which ones anodes fall into to? What I do is put bigger anodes on.
 
Bouba said:
;);)
are you sure we didn’t warn you about all the problems of boat ownership before you bought your boat? We must of forgot:)
I find there are two kinds of boat problems, practical and philosophical. The practical ones are when you are told you have a problem and this is how to fix it. The philosophical ones are when you are told you have a problem.
Guess which ones anodes fall into to? What I do is put bigger anodes on.
Click to expand...

Well, I believe that the captains here have warned me, but I also believe that I had the ear muffler on both my ears when signing the check. :p

The weather ban has been announced, so I lifted my boat now. I only put her back on water when the weather is good while I am off my job. No water, no problem.

To replace the anodes with bigger once is a good idea. I will do this on next season.
 
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