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​Maddox — Composite Alloy Anode

Picture
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 Works
The 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.

Standards
ABYC E-2 Cathodic Protection. Sec 2.5.1
DNV – RP-B401 – CP Design. Sec 1.1 & 6.3.5

Selection and Installation
The 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:
  1. Use a paper template to mark and drill the anode to fit existing bolts.
  2. Use marine grease on bolts, star washers and locking nuts.
  3. Tighten to secure and ensure star washers cut into both anode faces.
  4. Check the internal bonding connection is tight and working as an effective part of the Vessel Bonding System.

Maintenance Instructions
The 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.
  1. Ensure anode is firmly connected to terminals and check retaining nuts.
  2. Ensure the integrity of the electrical connection is maintained.
  3. Effective use of an anode in a closed circuit is dependent on its connection to a bonding system.
  4. Check star washers continue to be firmly attached to the anode.
  5. Visually inspect bonding wires where they are attached to the anode terminal bolts..
  6. Ensure all metals in circuit maintaining their connection.
​
Contact a qualified Marine Electrician for further information to test and monitor the vessel’s bonding system and anode connection.


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