fstbttms
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For you hull cleaners out there...
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Does it make any difference whether you position the anodes close or further apart? I have always spread them out evenly on the shaft. Have you seen any changes in the way they corrode or maybe even protect?
Not every boat has a divers dream style plate. Most sailboats only have shafts anodes.
I've heard many things from the 'electolysis experts' Marine Electricians and others that hold workshops and what not who have also said things like...aluminum corrodes slower than zinc, which is true for the puget sound.
If there's a "hot" boat in a marina, nearby boats can be affected, which I have dealt with first hand.
They have also said hot boats in freshwater marinas provide a huge risk of electrocution to divers. I and many others have been in these environments with hot boats and haven't experienced anything out of the ordinary.
They're obviously not always right about anything but at the time it made sense and it's just something I've always done.
So what is the purpose of an aluminum anode? I have records of boats that I have switched over from zinc to aluminum, they typically lasted 25% longer.
Magnesium is "less noble' than zinc but it doesn't corrode well in a saltwater environment.
Does it make any difference whether you position the anodes close or further apart? I have always spread them out evenly on the shaft. Have you seen any changes in the way they corrode or maybe even protect?