Fitting anodes to stainless steel trim tabs and rudders can cause some debate. Everything metal immersed in water will be affected to varying degrees. The problem intensifies with the introduction of an electrolyte – in other words, salts.
When attaching anodes to boats with ferrocement hulls, we recommend following the same instructions as for boats with GRP hulls. However, there are a number of additional instructions, which are as follows..
When attaching anodes to copper-sheathed and copper-clad boats, we recommend following the same instructions as for boats with GRP hulls.
These are useful instructions for fitting anodes to boats such as canal barges.
This article covers fitting hanging anodes. Hanging anodes are an alternative method to hull mounted anodes and will provide the same cathodic protection for all types of water craft whether GRP, steel or wood.