FONP nautical anodes for rudders and trim tabs are designed to protect these essential boat components from galvanic corrosion , which can seriously compromise the functionality and safety of the vessel. These sacrificial anodes decay in place of more noble metals, thus preserving the structure and extending the service life of rudders, trim tabs, and underwater parts.
Why choose FONP anodes for rudders and flaps?
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High quality materials
FONP manufactures anodes using certified materials suitable for various aquatic environments:
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Zinc : Ideal for use in salt water (sea).
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Aluminium : Suitable for brackish (mixed) water.
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Magnesium : Perfect for freshwater (lakes and rivers).
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Specific protection for rudders and flaps
- Designed to protect rudders (made of stainless steel or metal alloys) and flaps (submerged stabilizers).
- Constant protection even under prolonged immersion conditions.
- They prevent the deterioration of metal surfaces and the onset of structural damage.
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Optimized design
FONP anodes for rudders and flaps are designed for:
- Secure installation with pre-defined fixing holes .
- Resistance to vibrations and movements of the vessel.
- Minimal hydrodynamic resistance to avoid affecting the boat's performance.
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Durability and reliability
FONP anodes offer gradual and uniform consumption , guaranteeing long-lasting protection .
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International certification
FONP anodes comply with the main quality and purity standards:
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MIL-A-18001K for zinc anodes.
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EN 12496 for aluminium anodes.
Types of FONP anodes for rudders and flaps
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Plate anodes (rectangular or oval)
- Perfect for direct mounting to flat surfaces such as flaps and rudders .
- Available in various sizes and thicknesses to suit the needs of the boat.
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Semicircular or modular anodes
- Ideal for applications on rudders with curved or specific profiles.
- They provide complete and uniform protection.
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Anodes with fixing bolts
- Designed for easy and stable installation.
- They provide secure grip even in intense sailing conditions.
How do rudder and flap anodes work?
When rudders and trim tabs, made of metal materials, come into contact with water, a galvanic corrosion process is triggered. FONP anodes , made of more reactive materials, will corrode first, protecting the vessel's most valuable components.
When to replace anodes?
- Anodes should be checked periodically during boat maintenance.
- They should be replaced when they are worn down more than 50% .
Advantages of FONP anodes for rudders and flaps
✅ Complete protection against galvanic corrosion.
✅ High-quality materials: zinc, aluminum or magnesium .
✅ Simple and safe installation .
✅ They extend the life of rudders and flaps.
✅ Suitable for all types of boats and water conditions.
