Martyr Disc Zinc Anode

Martyr Disc Zinc Anode – Marine Sacrificial Corrosion Protection

Sacrificial Zinc Anode for Boats & Marine Hardware

The Martyr Disc Zinc Anode is a high-quality marine corrosion protection component designed to safeguard your boat’s underwater metal parts from galvanic and electrolytic corrosion. Often referred to as a “boat zinc”, this disc anode is made from a carefully engineered zinc alloy that sacrifices itself to corrosion instead of your valuable marine hardware — including hull fittings, rudders, outdrives, props, and other submerged metals. High-quality anodes like Martyr’s are pressure cast to meet strict quality standards and provide dependable marine protection.

Key Features & Benefits

• Marine-Grade Zinc Alloy: Manufactured to high standards with a specialised zinc alloy for robust protection in saltwater environments.

• Designed for Corrosion Protection: Sacrifices preferentially to protect hull metal and submerged components from galvanic corrosion.

• Disc Style: Compact, easy-to-fit disc shape ideal for mounting on rudders, trim tabs, stern drives, outdrives, or other underwater metal surfaces.

• Saltwater Use: Best suited for saltwater environments where zinc anodes are most effective.

• Simple Installation: Bolt or fasten onto pre-drilled holes using stainless steel hardware to ensure a good electrical connection.

Why Use a Zinc Anode Like This?

Boating metal submerged in saltwater — including propellers, sterndrives, rudders, hull fittings and shafts — is prone to galvanic corrosion due to dissimilar metals in an electrolytic environment. A sacrificial zinc anode protects these metals by corroding instead of the parts you depend on, extending the life of expensive components and helping avoid costly repairs.

Martyr anodes are engineered to meet strict quality standards with consistent alloy composition and performance, helping ensure reliable protection for your marine equipment.

Typical Applications

• Protection for metal parts below the waterline

• Anode for rudders and trim tabs

• Corrosion protection for sterndrives and lower units

• Hull plate or underwater fitting protection

• Outboard motor lower unit anode replacement