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When fitting anodes to WOODEN or GRP hulled vessels remember:
The anode should be position on the outside of the hull below the waterline.
The anodes can "see" the parts to be protected.
The fixing studs are located above the bilges.
The anode location ensures the minimum run of bonding cable to the parts to be protected.
There must be reasonable internal access to the studs.
The anode should not be positioned forward of or in line with Echo Sounding Transducers or log Impellers.
Hull Anode Installation
Stiffen the inside of the hull where the anode is to be fitted if necessary.
Drill holes to take the fixing studs at the appropriate centers.
On wooden hulled vessels studs should be sleeved or painted to insulate them from the surrounding timber. When sleeving the stud either use a heat shrink tube or ensure that the inside of the sleeve is packed with a suitable marine grade sealant.
Before inserting and securing each stud assembly, apply a generous amount of marine grade sealant to the shank and collar where the stud touches the hull
to ensure a good seal.
Whenever an anode is fitted to a GRP or wooden hull an anode backing sheet must be used to control the wastage of the anode and protect the hull. The
anode backing sheet should be replaced each time the anode is replaced.
Always ensure that the anodes are fitted with Fan Disc Washers under the securing nuts which will help to assure the contact between anode and cathodic
protection system. The fan disc washers and nuts should be replaced each time the anode is replaced.
Protect the anode fixing studs on assembly with paint or grease inside and outside the vessel.