In general, sacrificial anodes should be inspected at least once a year and replaced when they have corroded down to 50% of their original size or weight. For boats that are used heavily or operate in highly corrosive water, anodes may need to be replaced more frequently.
Boat anodes are typically made of metals that are more chemically active than the other metals on the boat, so that they will corrode before other components, such as the hull or propeller.
Which to use? Will aluminium or zinc anodes in salt water environments? Both will work and have different benefits depending on where the vessel is, in brackish water where the salinity is much less, then aluminium is definitely the metal to use. Aluminium however has many benefits over zinc. In this article we will discuss the pros and cons of both types.
Corrosion can occur in all types of water, and the consequences for boats can be catastrophic. That’s why it’s important to protect your vessel using strips of metal called sacrificial anodes. These anodes are part of a process called cathodic protection.
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.
By creating an account with our store, you will be able to move through the checkout process faster, store multiple addresses, view and track your orders in your account, and more.
RegisterYou have no items in your shopping cart
