Oh dear, I am really sorry to have misled you Doug. Dom is absolutely right. I allowed myself to become confused having just fitted magnesium to a boat on the broads. Looking again at photos of Helene’s rudder anode the apprear, as Dom says, standard zinc.
I have edited my original erroneous reply to avoid misleading anyone else in the future.
Many apologies
Nick, on the naughty step
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