Marine anodes, including zinc, aluminum, and magnesium anodes, are sacrificial metal components used to protect the hull and underwater metal parts of boats and yachts from galvanic corrosion. By corroding preferentially, the anodes help protect more valuable submerged components such as hull fittings, propeller shafts, rudders, trim tabs, and other bonded metal parts.
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1-2 weeks delivery time Talamex flat aluminium shaft collar anodes for marine propeller shafts, available for shaft diameters from Ø20 to Ø40 mm. The split collar design mounts around the shaft and is secured from both sides. Versions for Ø20–30 mm shafts measure Ø60x15 mm, while the Ø35 and Ø40 mm models measure Ø74x18 mm. Weights range from 0.11 to 0.22 kg.
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$ 21.48
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1-2 weeks delivery time Talamex ball-shaped aluminium sacrificial anodes for marine propeller shafts, available for shaft diameters from Ø22 to Ø50 mm. The range includes seven sizes with external diameters from Ø50 to Ø81 mm, heights from 47 to 83 mm and weights from 0.15 to 0.55 kg. The split ball-shaped construction allows the anode to be fitted around the corresponding propeller shaft.
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$ 29.46
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1-2 weeks delivery time Talamex conical zinc sacrificial anodes for propeller shafts, available for shaft diameters from Ø25 to Ø45 mm. The range includes five sizes with external diameters from Ø32 to Ø59 mm, heights from 39 to 74 mm and weights from 0.20 to 0.60 kg. The conical body is designed to fit around the corresponding propeller shaft size.
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$ 11.22
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1-2 weeks delivery time Talamex zinc 6-sided conical sacrificial anodes for propeller shafts, available for shaft diameters from Ø22–25 to Ø45 mm. The range includes five sizes with external diameters from Ø32 to Ø59 mm, heights from 39 to 73 mm and weights from 0.10 to 0.60 kg. Each version combines a tapered outer body with a 6-sided internal profile and is selected according to the propeller shaft diameter.
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$ 11.44
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1-2 weeks delivery time Talamex flat zinc shaft collar anodes for marine propeller shafts, available for shaft diameters from Ø20 to Ø40 mm. The split collar design is secured around the shaft with two bolted connections. Models for Ø20–30 mm shafts have an external diameter of Ø60 mm and a height of 15 mm, while the Ø35 and Ø40 mm versions measure Ø74x18 mm. Weights range from 0.18 to 0.35 kg.
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$ 13.48
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1-2 weeks delivery time Talamex ball-shaped zinc sacrificial anodes for marine propeller shafts, available for shaft diameters from Ø20 to Ø50 mm. The range includes eight sizes with external diameters from Ø50 to Ø81 mm and weights from 0.35 to 1.30 kg. The split ball-shaped design allows the anode to be installed around the propeller shaft and secured in position.
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$ 15.75
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1-2 weeks delivery time Talamex aluminium sacrificial anodes with screw mounting, available in two configurations. Talamex 45.802.007 (Ref. 1) measures 200x65x35 mm, has a 12x110 mm mounting slot and weighs 0.55 kg. Talamex 45.802.011 (Ref. 2) measures 320x65x35 mm, has a 160 mm fixing dimension and a 12x65 mm mounting opening, and weighs 1.00 kg.
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$ 32.57
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1-2 weeks delivery time Talamex aluminium sacrificial anodes in Vetus Type 15 and Vetus Type 25 configurations. Talamex 45.800.003 Type 15 measures 150x60x25 mm, has an 80 mm fixing centre distance and weighs 0.45 kg. Talamex 45.800.004 Type 25 measures 250x65x28 mm, has a 140 mm fixing centre distance and weighs 1.00 kg. Both versions use Ø11 mm mounting holes with 11x15 mm recesses.
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$ 31.86
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1-2 weeks delivery time Talamex magnesium sacrificial hull anodes with bolt-on mounting, available in two configurations. Talamex 45.840.005 (Ref. 1) measures 200x65x35 mm, features a 12x110 mm mounting slot and weighs 0.40 kg. Talamex 45.840.007 (Ref. 2) measures 320x65x35 mm, has catalogue dimension D of 160 mm with 12x65 mm mounting openings, and weighs 0.70 kg. The magnesium construction is intended for marine corrosion protection, particularly in freshwater and brackish-water applications.
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$ 47.61
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1-2 weeks delivery time Talamex zinc sacrificial anodes with screw mounting, available in two configurations. Talamex 45.800.014 (Ref. 1) measures 200x65x35 mm, has a 12x110 mm mounting slot and weighs 1.20 kg. Talamex 45.800.022 (Ref. 2) measures 320x65x35 mm, has a 160 mm fixing dimension and a 12x65 mm mounting feature, and weighs 2.40 kg.
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$ 42
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1-2 weeks delivery time Talamex zinc sacrificial anodes in Vetus Type 15 and Type 25 configurations. Talamex 45.800.001 Type 15 measures 150x60x25 mm, has an 80 mm fixing centre distance and weighs 1.00 kg. Talamex 45.800.002 Type 25 measures 250x65x28 mm, has a 140 mm fixing centre distance and weighs 2.40 kg. Both versions use 11x15 mm and Ø11 mm mounting hole dimensions.
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$ 28.51
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1-2 weeks delivery time Talamex aluminium sacrificial anodes with integrated mounting strip, available in three sizes from 0.60 to 1.80 kg. Talamex 45.802.006 measures 190x60x28 mm with a 110 mm anode body length, while 45.802.010 and 45.802.018 both have an overall length of 300 mm and a 200 mm anode body length, with different widths, heights and weights.
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$ 21.59
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1-2 weeks delivery time Talamex magnesium sacrificial hull anodes with integrated mounting strip for weld-on installation, available in four sizes from 0.30 to 1.80 kg. Overall lengths range from 190 to 390 mm, with anode body lengths from 110 to 290 mm. The series is intended for marine corrosion protection, particularly in freshwater and brackish-water applications.
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$ 24.57
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1-2 weeks delivery time Talamex zinc sacrificial anodes with integrated mounting strip, designed for marine corrosion protection in saltwater. The range includes four sizes weighing from 0.60 to 3.00 kg. Overall lengths range from 190 to 320 mm, with anode body widths from 60 to 90 mm and heights from 20 to 40 mm.
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$ 36.40
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1-2 weeks delivery time Talamex 45.830.190 round aluminium sacrificial anode designed for rudder blades with a single central mounting hole. The anode measures Ø90x25 mm, has an Ø8 mm fixing hole and weighs 0.27 kg.
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$ 28.63
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1-2 weeks delivery time Talamex round zinc sacrificial anodes designed specifically for rudder blades, with a single central mounting hole. The range includes Ø50x12, Ø70x17 and Ø90x20 mm versions, all with an Ø8 mm fixing hole. Weights range from 0.13 to 0.50 kg.
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$ 6.91
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1-2 weeks delivery time The Hollex Aluminium Ball Shaft Anode is a spherical sacrificial anode designed to protect boat propeller shafts against corrosion in brackish and saltwater environments. Its steel core helps prevent the anode from becoming loose around the shaft. Available for shaft diameters of 22, 25, 25.4 (1"), 30, 35, 38, 40, 45, 50 and 60 mm. Manufactured from aluminium, the anode features a split ball-shaped design for installation around the shaft. Supplied individually.
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$ 18.13
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1-2 weeks delivery time The TOR Marine Zinc Cap Nut Anodes are designed to provide sacrificial corrosion protection for compatible OES marine installations. Manufactured from zinc, the range includes three models: ZN50 for OES-50 (Ø50 mm), ZN55 for OES-55 (Ø55 mm) and ZN60 for OES-60 (Ø60 mm). These replacement anodes help protect electrically connected marine metal components against galvanic corrosion by corroding preferentially. Each model is supplied individually. Select the correct version according to the existing cap nut size and OES model.
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$ 55.93
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1-2 weeks delivery time The Hollex ZD76 Aluminium Anode AX003 is a rectangular sacrificial anode designed to protect boat hulls, rudders and other metal components against corrosion in brackish water environments. Manufactured from aluminium, it measures 200 × 65 × 35 mm (L × W × H) and features a mounting hole spacing of 110 mm. The anode provides sacrificial corrosion protection by corroding preferentially to the protected metal components. Supplied individually.
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$ 33.71
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1-2 weeks delivery time The Hollex Type V Aluminium Anode is a rectangular sacrificial anode designed for corrosion protection of boat hulls and rudders in brackish water environments. Available in three models: V 15C (150 × 60 × 25 mm), V 25C (250 × 65 × 28 mm) and V 35C (350 × 70 × 38 mm). The anodes feature mounting hole spacings of 80, 140 or 200 mm, depending on the model, with a uniform hole diameter of 11 mm. Manufactured from aluminium, these anodes provide sacrificial protection for metal components and are supplied individually.
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$ 21.19
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How do Aluminum, Zinc, and Magnesium Anodes differ in protecting a boat?
Aluminum, zinc, and magnesium anodes all provide cathodic protection by acting as sacrificial metals, but their effectiveness depends on the water type and their electrochemical potential. Zinc anodes are traditionally used in saltwater and provide reliable protection in high-salinity environments. Aluminum anodes are more electrochemically active than zinc and offer a higher protective capacity for their weight, making them suitable for saltwater and brackish water and, with the correct alloy, many freshwater applications. Magnesium is the most active of the three materials and is primarily intended for freshwater, where its higher driving voltage provides effective protection in low-conductivity conditions. Magnesium anodes should generally not be used in saltwater or brackish water, as they may provide excessive protection and be consumed too rapidly.
Why is anode placement on the hull plate important for effective corrosion protection?
Correct anode placement is essential because sacrificial anodes must be electrically connected to the metal they protect and positioned where protective current can reach exposed underwater surfaces effectively. On metal hulls, anodes should be distributed around areas that are most susceptible to galvanic corrosion, including the hull plating, rudder, propeller shaft, stern gear, and other submerged metal components. Poorly positioned, undersized, or electrically isolated anodes may leave parts of the structure insufficiently protected. Proper distribution helps maintain a more uniform protective potential across the underwater metalwork and reduces the risk of localized corrosion.