This system complements the sterndrive/outboard sacrificial anodes and is not intended to replace those. The Active Corrosion Protection System™ is recom-mended for fiberglass boats that are used in salt water with varying degrees of corrosiveness, or where extra protec-tion against corrosion is needed. The system is designed to protect the mass of one sterndrive or outboard. An ad-ditional kit is required for installation on a twin engine boat.
Built in LED's on the electronic control panel let you know if the drive is being protected. The system constantly mo-nitors the area around the sterndrive or outboard. By reading the LED's on the electronic control panel which is moun-ted inside the boat you will be aware of what is going on under the water around your sterndrive or outboard. The QL Active Corrosion Protection System™ is designed for 12V electrical systems and has absolutely no moving parts, so minimum maintenance is required.
The system comes complete with wiring and detailed installation instructions. Standard tools, a drill and suitable un-derwater sealant are all that is required for most installations.
The whole range of M G Duff anodes and electrodes is manufactured to high performance and low maintenance specifications. Innovative design combines proved cathodic protection materials with advanced plastics technology. High strength PVC encapsulations resist chemical attack
and take advantage of superior insulation characteristics to replace outmoded GRP based systems. Watertight integrity at anode and electrode
penetrations is maintained by heavy grade steel housings and cofferdams. Lighter grade assemblies are available for light hull vessels.
M G Duff Shaft Earthing Systems meet the requirements of BS Code of Practice CP.1021 as well as major engine manufacturers ecommendations. High efficiency silver tracked Sliprings and silver graphite brushes effectively extend cathodic protection to exposed propeller and shaft surfaces whist at the same time reducing spark erosion damage to shaft bearings. (A more economic, but less efficient copper based version is
available). The effectiveness of the shaft bonding may be monitored by an
optional Shaft Condition Monitor. Rudder and stabiliser bonding cables are provided as standard
Sacrificial anodes 
