anodes

[Grehan]

We're in Gib, but our friends have a steel De Groot mobo that together we're going to take up to France (by road) and put into fresh water. He's got a complete set (20+) of unused salt-water anodes and is wondering how effective they would be in fresh. A complete new set would be quite expensive and if the salt jobbies would be (say) 70% effective then we'd probably fit them and haul out and check 'em in 6 or 9 months time.
What do you folks think? Thanks for any sensible comments.

 

[colvic987]

check out this site www.mgduff.co.uk they should be able to answer all your questions on anodes..

 

[roly_voya]

But answer will be NO, Just been looking at the McDuff site and they say zinc anodes will be inhibites withing a couple of weeks in fresh water

 

[macd]

As Colvic suggests, excellent info on MG Duff site.
The problem with zinc in fresh and brackish water isn't that it works 50, 70 or whatever per cent as well as in salt, but that it develops an electrically inert deposit which stops it working at all.