Tag Archives: boat tech

Changing a boat anode whilst still afloat

An anode is a sacrificial piece of metal that corrodes more quickly than the other metal it is attached to. This little piece of chemistry means that we can use Zinc on our propeller shaft to protect our propeller, the shaft itself and the engine from corrosion since the zinc ‘anode’ wastes away first. They are generally replaced once per year but since they are underwater, can be a pain in arse to both check and replace without the boat being lifted out. That is costly and boring so this is how we do it!