Maddox — Composite Alloy Anode
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.
Maddox is available in 3 sizes and will be soon also be available in disc and capsule shapes as well.
Complies with ABYC & DNV directives
Protects fibreglass and timber boats
Stops wood rot in timber vessels
Attracts less growth than zinc
Maintains hull and propeller coatings
Reduces slipping and maintenance costs
How It WorksThe Maddox anode is an internationally accredited sacrificial anode for timber and fibreglass vessels. The patented composite alloy is closer than zinc in mV potential to the submerged metals found on most boats making it less aggressive on coatings and parts than the zinc equivalent.
StandardsABYC E-2 Cathodic Protection. Sec 2.5.1 DNV – RP-B401 – CP Design. Sec 1.1 & 6.3.5
Selection and InstallationThe appropriate size anode for any one vessel depends on the type, volume and surface area of the submerged metals to be protected. The anode consumption rate can be calculated with reference to DNV-RP-B401. Maddox anodes available in MAD1.6 MAD2.5 MAD4.2 Maddox anodes are manufactured without holes to allow custom fitting of the anode to any vessel. MPS suggests:
- Use a paper template to mark and drill the anode to fit existing bolts.
- Use marine grease on bolts, star washers and locking nuts.
- Tighten to secure and ensure star washers cut into both anode faces.
- Check the internal bonding connection is tight and working as an effective part of the Vessel Bonding System.
Maintenance InstructionsThe Maddox Anode has no moving or serviceable parts. Marine Protection Systems recommends regular visual anode inspections and a comprehensive inspection whenever the vessel is on hardstand.
- Ensure anode is firmly connected to terminals and check retaining nuts.
- Ensure the integrity of the electrical connection is maintained.
- Effective use of an anode in a closed circuit is dependent on its connection to a bonding system.
- Check star washers continue to be firmly attached to the anode.
- Visually inspect bonding wires where they are attached to the anode terminal bolts..
- Ensure all metals in circuit maintaining their connection.