How often should boat anodes be replaced?
You should change your anode at least every 12 months or when it has corroded to half its original size to ensure it is working to its optimum level.
What is the purpose of an anode on a boat?
The anodes act as sacrificial metal because they give off their electrons and corrode before the other metals in the motor can be affected. Because corrosion attacks the least resistant metal on a boat’s motor, the anodes or zincs are the first line of defense.
How many anodes Does my boat need?
It is just as important as the sides and we recommend anodes are fitted every 8 to 10ft with 2 at the bow and stern. Anodes are fitted or replaced after hull blacking. Just remember the anode is a small sacrifice compared to your hull!