Sacrificial anode

The anode on the propeller shaft wears out in two seasons. We also had a problem with corrosion of the heat exchanger (a new one was provided by Vetus under warranty) and corrosion of the ball valve on the sea water intake for the engine.

To hopefully avoid premature death of our new engine and other fittings, we have fitted a small pen anode in the sea water circuit of the engine as well as a 5 kg anode on the hull, wired into the engine. Let’s see what happens…

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As close to the propeller and sea water intake as possible, with a free line of sight to both.

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Bronze thru hull post connects the zinc anode to the 16 mm2 tinned copper wire from the engine