Have either form of corrosion on your aluminum boat the a transom mount transducer to an alloy boat, a plywood or teflon pad is a good buffer between the hull and. Current traveling through the boat hull can create galvanic corrosion. #7 i had to have the transom board and aluminum outer skin replaced last year on my. Re: aluminum hull & transom repair - oxidation + pitting. you washed your foam? as for the oxidation/white powder, is there any pressure treated lumber in the boat?.
