ACP system is expanded

Volvo Penta's corrosion prevention system has been expanded to include its sterndrives Volvo Penta's corrosion prevention system has been expanded to include its sterndrives

Volvo Penta’s Active Corrosion Protection system has been expanded to include its sterndrives.

The system is designed to protect the boat owner’s drive from corrosion in the water and works by applying impressed currents through a transom unit.

“Its development has been driven by customers wanting an easy solution to prevent their drive units from corrosion,” said Jonas Welinder, product planner for marine electronics. “If the boat’s drive corrodes, it will need to be serviced or in some cases even replaced, which can be very costly.”


The system is designed to protect the drive from galvanic corrosion, continually measuring and automatically adjusting the electrical output. It can be used in both brackish and salt water.

Previously, he added corrosion has traditionally been combatted with the installation of sacrificial anodes.

The system is integrated into a boat’s Electronic Vessel Control, enabling the owner to monitor the protection status directly from the helm.

It is powered by the boat’s auxiliary battery, backed-up with shore power when at the dock. If the battery level is low, the drive is still protected by the back-up sacrificial anode.

“We want to make boating as easy for customers as possible as there is a demand for immediate usability with low maintenance,” added Jonas.

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