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Anodes

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Zinc Anodes with Straps
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-21%
Zinc Anodes with Straps
8.50 EUR €10.81 from €8.50
(39)
Zinc Anode / 1 kg
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-56%
Zinc Anode / 1 kg
17.95 EUR €41.13 only €17.95
(3)
Zinc Anode with Long Hole / 1.2 kg
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-44%
Zinc Anode with Long Hole / 1.2 kg
23.95 EUR €43.10 only €23.95
No rating yet
Zinc Anode with Long Holes / 2.4 kg
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-54%
Zinc Anode with Long Holes / 2.4 kg
34.95 EUR €75.18 only €34.95
(5)
Zinc Anode / 2.45 kg
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-56%
Zinc Anode / 2.45 kg
34.95 EUR €79.68 only €34.95
No rating yet
Zinc Hull Anodes, Flat Shape with Boreholes
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-36%
Zinc Hull Anodes, Flat Shape with Boreholes
17.95 EUR €28.14 from €17.95
(27)
Zinc Double Anodes, round Shape
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Zinc Double Anodes, round Shape
15.95 EUR from €15.95
(46)
Zinc Anodes for Aluminum Boats
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Zinc Anodes for Aluminum Boats
54.95 EUR only €54.95
(2)
Zinc Anode Kits for Engines
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-13%
Zinc Anode Kits for Engines
37.95 EUR €43.70 from €37.95
(11)
Shaft Anodes / long Shaped, zinc
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Shaft Anodes / long Shaped, zinc
45.95 EUR from €45.95
No rating yet
Zinc Collar Nut Shaft Anodes
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-23%
Zinc Collar Nut Shaft Anodes
12.95 EUR €16.85 from €12.95
(65)
Shaft zinc anodes, short version
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-60%
Shaft zinc anodes, short version
4.95 EUR €12.44 from €4.95
(39)
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
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Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
68.95 EUR from €68.95
(26)
Zinc anode - hat shape / conical
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-17%
Zinc anode - hat shape / conical
8.50 EUR €10.22 from €8.50
(2)
Shaft and Propeller Anode / Zinc
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-13%
Shaft and Propeller Anode / Zinc
47.95 EUR €54.99 from €47.95
No rating yet
Shaft and Propeller Anode / Zinc
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-13%
Shaft and Propeller Anode / Zinc
47.95 EUR €54.99 from €47.95
No rating yet
Shaft and Propeller Anode / Zinc
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-13%
Shaft and Propeller Anode / Zinc
47.95 EUR €54.99 from €47.95
No rating yet
Shaft and Propeller Anode / Zinc
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-17%
Shaft and Propeller Anode / Zinc
39.95 EUR €48.36 from €39.95
No rating yet
Shaft and Propeller Anode / Zinc
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-22%
Shaft and Propeller Anode / Zinc
37.95 EUR €48.36 from €37.95
(3)
Alamarine Zinc Anode
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-15%
Alamarine Zinc Anode
7.95 EUR €9.38 from €7.95
No rating yet
SARNICO Zinc Anode
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-11%
SARNICO Zinc Anode
529.95 EUR €597.12 only €529.95
No rating yet
OPERA Zinc Anode
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-11%
OPERA Zinc Anode
593.95 EUR €668.30 from €593.95
No rating yet
VERTIGO Zinc Anode
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-14%
VERTIGO Zinc Anode
523.95 EUR €607.35 only €523.95
No rating yet
Zinkanode FERRETTI
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-11%
Zinkanode FERRETTI
23.95 EUR €26.80 from €23.95
No rating yet
FERRETTI, Zinc Anode
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-36%
FERRETTI, Zinc Anode
475.95 EUR €745.42 from €475.95
No rating yet
Ferretti Shaft and Propeller Anode / Zinc
Product image of Ferretti Shaft and Propeller Anode / Zinc
-11%
Ferretti Shaft and Propeller Anode / Zinc
647.95 EUR €729.99 only €647.95
No rating yet
DOLCE VITA Zinc Anode
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-26%
DOLCE VITA Zinc Anode
199.95 EUR €269.89 only €199.95
No rating yet
SPLENDIDA 72 Zinc Anode
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-11%
SPLENDIDA 72 Zinc Anode
627.95 EUR €706.86 only €627.95
No rating yet
ACQUAVIVA Zinc Anode
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-14%
ACQUAVIVA Zinc Anode
29.95 EUR €34.70 only €29.95
No rating yet
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
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Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
64.95 EUR from €64.95
No rating yet
ZINC SAVER II Galvanic Isolator
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STERLING ZINC SAVER II Galvanic Isolator
139.95 EUR only €139.95
(23)
Drive Shaft Grounding
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Drive Shaft Grounding
99.95 EUR from €99.95
(1)
Zinc Anode with 4 m Fastening Cable / 2.2 kg
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-37%
Zinc Anode with 4 m Fastening Cable / 2.2 kg
69.95 EUR €110.53 only €69.95
(2)
Pin Zinc Anode for BUKH Engines DV10 - DV48
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Pin Zinc Anode for BUKH Engines DV10 - DV48
21.95 EUR only €21.95
No rating yet
Flat Aluminium Anodes
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Flat Aluminium Anodes
13.95 EUR from €13.95
(24)
Aluminium Anode
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-48%
Aluminium Anode
12.95 EUR €24.95 from €12.95
(41)
Aluminium Anodes, flat shape with drilling
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-31%
Aluminium Anodes, flat shape with drilling
19.95 EUR €28.83 from €19.95
(11)
Aluminum Anode Kits for Engines
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Aluminum Anode Kits for Engines
25.95 EUR from €25.95
(1)
Aluminium Shaft Anodes, Long Construction
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Aluminium Shaft Anodes, Long Construction
39.95 EUR from €39.95
(6)
Magnesium Anode, Flat Shape with Drilling
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Magnesium Anode, Flat Shape with Drilling
34.95 EUR from €34.95
(1)
Round Magnesium Anodes
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Round Magnesium Anodes
12.95 EUR from €12.95
(2)
Magnesium Anodes / Teardrop
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Magnesium Anodes / Teardrop
19.95 EUR from €19.95
(1)
Magnesium Collar Nut Shaft Anodes
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Magnesium Collar Nut Shaft Anodes
22.95 EUR from €22.95
No rating yet
Magnesium Anode Kits for Engines
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Magnesium Anode Kits for Engines
34.95 EUR from €34.95
(7)
Magnesium Collar Nut Shaft Anodes
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Magnesium Collar Nut Shaft Anodes
22.95 EUR from €22.95
No rating yet

Anodes

Typically anodes have to be replaced once per season. In harsh water conditions, a more frequent replacement schedule might be necessary. The anodes are mounted along the keel. The electric current is higher at the stern post due to the propeller being located there. It is advisable to install several anodes in this area. Anodes should also be mounted on the rudder and propeller shaft. If the anodes don't show any signs of dissolving after a while, something might be wrong. Something is always getting dissolved. If the sacrificial anodes are not attacked by corrosion, another area is probaly affected by corrosion. The purpose of the sacrificial anode is to be dissolved. 
For the protection of hulls, engines and outboard motors made from aluminium alloys, zinc anodes are commonly used in salt- and brackish water. In fresh water conditions, magnesium anodes are commonly used. For hulls and other underwater parts made from steel, brass or bronze, zinc anodes may be used. However they tend to be replaced more frequently than aluminium anodes due to the fact that zinc anodes always contain a small percentage of the toxic heavy metal cadmium. This is also why aluminum anodes are considered to be a lot more environmentally friendly. Moreover, aluminium anodes are more efficient, longer-lasting and recommended for usage in brackish waters or when going back and forth between salt- and freshwater.
Anodes must never be painted or lubricated! This is because they would lose their electrical conductivity with water and thus, they will not be able to properly prevent corrosion. If a boat stays on land for a long period of time, some layers of oxidation (especially in the case of aluminium anodes) might prevent them from functioning properly, as the potential difference might be too low.
Table for calculating the required amount of anodes (in kg), depending on the corresponding unprotected metal surface:
Metal surfaces in m2 / zinc anodes in kg
5 to 10 m2 / 5.5 kg
10 to 20 m2 / 9.5 kg
20 to 30 m2 / 18.0 kg
30 to 40 m2 / 20.0 kg
40 to 50 m2 / 25.0 kg


 

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