The simple answer is yes, freshwater boats also need sacrificial anodes to protect their metal components from corrosion. Although freshwater is not as corrosive as saltwater, it still contains minerals and other substances that can cause metal to corrode over time.
Sacrificial anodes are designed to corrode in place of the metal they are protecting. Anodes for freshwater are typically made of magnesium or aluminium, which are more active metals that will corrode first when in contact with water. This process helps to prevent corrosion of the more expensive metal parts of the boat.
Freshwater boats may not require anodes to be replaced as frequently as saltwater boats (where aluminium or zinc anodes would be used), but it is still important to inspect them regularly to ensure that they are functioning properly. The frequency of replacement will depend on the specific conditions in which the boat is used, as well as the type of anode being used.
Best anodes for freshwater
Magnesium anodes are the best choice of anode for freshwater, as they offer superior protection in areas of low conductivity. You can also use aluminium anodes in salt water, but the protection provided by magnesium anodes is far superior, so it's only worth using aluminium anodes if your boat is sporadically in fresh water.
Where can I buy freshwater anodes?
Since 2009 we've been supplying a leading range of freshwater anodes, including magnesium shaft anodes, magnesium hull anodes and magnesium saildrive anodes. Our leading range of anodes for boats have been hand chosen by our highly experienced team who are here to assist, should you have any questions. Call us on 01634 568011 or email [email protected], and we'll come back to you as soon as possible.
All our orders are shipped out on a fully tracked, next working day service - although if your order is urgent, please contact us to confirm stock availability.