ÁNODO 230*30*25 CF 150 (ZN)

Function and technical context

This zinc anode with dimensions 230×30×25 mm acts as cathodic protection on boats, sacrificing itself electrochemically to protect the metal surfaces of the hull, shafts, propellers and submerged structures against galvanic corrosion. It works within the passive anti-corrosion protection system, interposing a less noble metal—zinc—between the marine environment and higher-value structural or propulsion components. Its correct installation and periodic renewal is critical: without effective cathodic protection, salt or brackish water rapidly attacks structural metals, causing pitting, weakening of shafts and deterioration of propellers that can lead to serious breakdowns and costly repairs in the dock. With reference REC8012, this flat profile anode is especially suitable for mounting on keels, rudders, aluminum hulls and other flat surfaces of pleasure and work boats.

When to replace this part?

The most common symptoms of exhaustion of an anode are the visible reduction in its mass—when it has lost approximately 50% of its volume it must be replaced without delay—and the appearance of pits or oxidation spots on the adjacent metals it protects, an unequivocal sign that the zinc has been consumed and has ceased to offer effective protection. The inspection and replacement of the zinc anodes should be carried out at least once a season, coinciding with the annual beaching, although in areas of high salinity or with vessels with complex electrical installations it is advisable to inspect them every six months. Replacing the anode preventively before it is completely used up is the most economical measure to avoid irreparable damage to shafts, propellers and hulls that multiply the cost of repair tenfold.