Attaching the 57L Hanging Anode Range

Overview

Hanging anodes are an alternative method to hull mounted anodes and will provide the same cathodic protection for all types of water craft whether GRP, steel or wood. Most leisure craft are constructed of GRP and the following information is based on this type of vessel. Hanging anodes can also be used to protect sail drives, sterndrives and even outboards. The anode is hung over the side of the craft at the stern and the cable is connected inside the vessel to provide continuity to the underwater items to be protected.

Traditional hanging anodes have the wire cast into the anode material and once consumed the whole system has to be disposed of. The new hanging anode range from MG DUFF features an interchangeable anode system allowing the replacement of the anode material without disturbing the bonding system. This is particularly useful when a craft is moored in differing water types as the system allows the correct anode material to be selected whilst only using one hanging cable. It can also be used to back up existing anode systems. Another advantage is the anode can be checked by simply lifting the anode out of the water and visually inspecting it for wear.

Hanging anodes are only to be used when the vessel is moored. When under way, coil the cable and secure with the supplied reusable rubber tie wraps. Store the anode and cable away until required. Never start an engine with a hanging anode deployed, the anode may be drawn into the propeller and cause damage.

Fitting Guidelines

  • Identify a suitable location on the engine or gearbox to fix the M10 terminal. For sail drives connect to the mounting bolts or sterndrives to the transom shields. The engine may already have bonding cables attached for existing hull mounted anodes. If so attach to the same point. If the boat has a flexible coupling ensure that the coupling is bridged to ensure continuity.
  • Run the cable back from the connecting terminal into suitable storage locker that can stow the hanging anode and cable when the vessel is underway.
  • Find a suitable place on a bulk head to fix the supplied cable mount. Either screw or bolt the mount into place.
  • Using the supplied cable tie, secure the cable to the cable mount.
  • Run the rest of the anode cable out of the locker and to the stern of the boat.
  • Ensure you have the correct anode material for the water type the boat is moored in.
  • Remember – ZINC for SALT WATER, ALUMINIUM for BRACKISH WATER, and MAGNESIUM for FRESH WATER.
  • Secure the anode to the cable by screwing the anode into the female connector. Ensure the anode cable connection is tight by tightening the nut on the anode thread onto the female connector.
  • Hang the anode over the stern of the boat at a height level with the propeller.
  • Coil any left over cable in the locker and secure with the supplied reusable rubber tie wraps.
  • With a good quality multi meter check that there is continuity between the anode and prop shaft.
  • If possible measure the resistance and ensure a reading of less than 0.5 Ohms is achieved.

57L Hanging Anodes

ZINC Hanging Anodes for SALT WATER

 

ALUMINIUM Hanging Anodes for BRACKISH WATER

 

MAGNESIUM for FRESH WATER