Vessels in a marina are interconnected via a common shore earth which carries low voltage DC current between them and the marina. This DC current is passed through the metal hull fittings in to the water where it is free to contribute to galvanic corrosion. The result is more rapid consumption of anodes and then damage to unprotected submerged metal parts. An Electrolysis Blocker blocks the damaging DC current and maintains effective AC earth capability.
Electrolysis Blockers must be installed by a licenced Electrician. Sydney Marine Electrical will install or test your system for performance and/or fault conditions by one of our qualified electricians using a specialised marine multimeter.
Shaft Grounding Straps
Sydney Marine Electrical service and install Shaft Grounding Straps which electrically connects a vessels drive shafts to the Vessel Bonding System and further reduces the incidence of galvanic corrosion on expensive metal drive parts.
Maddox anodes effectively protect bronze and stainless steel parts on fibreglass and wooden vessels by creating a more neutral environment in the water around the metal to be protected. Contact Sydney Marine Electrical for more information.