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Anodes

In order to protect the hull from corrosion, the metal is electrically connected to a less precious metal that oxidises much quicker. Usually anodes need to be changed once a season, and even more frequently in rough waters. Zinc anodes in salt and brackish water and magnesium anodes in fresh water are useful for protecting hulls, drives and outboard motors made of aluminium alloys. As zinc anodes always contain a small percentage of the toxic heavy metal cadmium, aluminium anodes are more environmentally friendly. In addition, aluminium anodes are more effective, more durable and are particularly recommended for operation in brackish waters and for mixed use in salt and fresh water. Sacrificial anodes must under no circumstances be painted over, brushed off or lubricated.

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 Learn more about Anodes...
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Zinc Propeller / Shaft Anodes

Shaft Anodes / long Shaped, zinc
Product image of Shaft Anodes / long Shaped, zinc
Shaft Anodes / long Shaped, zinc
from 46 33 €
(1)
3 variants
Shaft Anodes / long Shaped, zinc
Shaft Anodes / long Shaped, zinc
Zinc Collar Nut Shaft Anodes
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Zinc Collar Nut Shaft Anodes
from 13 06 € €16.43
(70)
8 variants
Zinc Collar Nut Shaft Anodes
Zinc Collar Nut Shaft Anodes
Zinc Collar Nut Shaft Anodes
-21%
Shaft zinc anodes, short version
Product image of Shaft zinc anodes, short version
Shaft zinc anodes, short version
from 5 00 € €12.12
(43)
9 variants
-59%
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Product image of Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
from 69 53 €
(27)
3 variants
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc anode - hat shape / conical
Product image of Zinc anode - hat shape / conical
Zinc anode - hat shape / conical
from 8 57 € €9.96
(2)
3 variants
Zinc anode - hat shape / conical
Zinc anode - hat shape / conical
-14%
Zinc Anode - conical/conical
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Zinc Anode - conical/conical
from 22 14 €
(10)
10 variants
Zinc anode - conical / hexagonal
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Zinc anode - conical / hexagonal
from 7 26 € €8.62
(4)
9 variants
-16%
Shaft and Propeller Anode / Zinc
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Shaft and Propeller Anode / Zinc
from 48 35 € €53.60
No rating yet
3 variants
-10%
Shaft and Propeller Anode / Zinc
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Shaft and Propeller Anode / Zinc
from 48 35 € €53.60
No rating yet
7 variants
-10%
Shaft and Propeller Anode / Zinc
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Shaft and Propeller Anode / Zinc
from 48 35 € €53.60
No rating yet
9 variants
-10%
Shaft and Propeller Anode / Zinc
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Shaft and Propeller Anode / Zinc
from 40 28 € €47.14
No rating yet
10 variants
-15%
Shaft and Propeller Anode / Zinc
Product image of Shaft and Propeller Anode / Zinc
Shaft and Propeller Anode / Zinc
from 38 27 € €47.14
(3)
10 variants
-19%
Alamarine Zinc Anode
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Alamarine Zinc Anode
from 8 02 € €9.14
No rating yet
3 variants
Alamarine Zinc Anode
Alamarine Zinc Anode
Alamarine Zinc Anode
Alamarine Zinc Anode
Alamarine Zinc Anode
Alamarine Zinc Anode
Alamarine Zinc Anode
-12%
SARNICO Zinc Anode
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SARNICO Zinc Anode
only 534 40 € €582.06
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Item will be ordered for you
SARNICO Zinc Anode
SARNICO Zinc Anode
-8%
OPERA Zinc Anode
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OPERA Zinc Anode
from 598 94 € €651.46
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2 variants
-8%
VERTIGO Zinc Anode
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VERTIGO Zinc Anode
only 528 35 € €592.04
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Item will be ordered for you
VERTIGO Zinc Anode
VERTIGO Zinc Anode
-11%
FERRETTI, Zinc Anode
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FERRETTI, Zinc Anode
from 24 16 € €26.12
No rating yet
5 variants
-8%
FERRETTI, Zinc Anode
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FERRETTI, Zinc Anode
from 479 95 € €726.62
No rating yet
3 variants
-34%
Ferretti Shaft and Propeller Anode / Zinc
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Ferretti Shaft and Propeller Anode / Zinc
only 653 40 € €711.59
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Item will be ordered for you
Ferretti Shaft and Propeller Anode / Zinc
Ferretti Shaft and Propeller Anode / Zinc
-8%
DOLCE VITA Zinc Anode
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DOLCE VITA Zinc Anode
only 201 63 € €263.09
No rating yet
Available within 3-4 weeks
-23%
SPLENDIDA 72 Zinc Anode
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SPLENDIDA 72 Zinc Anode
only 633 23 € €689.04
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Item will be ordered for you
-8%
ACQUAVIVA Zinc Anode
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ACQUAVIVA Zinc Anode
only 30 21 € €33.83
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Only 1 in stock
-11%
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
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Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
from 65 49 €
(1)
3 variants
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinc Anode with Cutter SLC / 25 / 30 / 35 mm
Zinkanode für Gori-Propeller 15''-16,5''
Product image of Zinkanode für Gori-Propeller 15''-16,5''
Zinkanode für Gori-Propeller 15''-16,5''
only 12 05 €
No rating yet
Available on 13.07.2020
Zinkanode für Gori-Propeller 15''-16,5''
Zinkanode für Gori-Propeller 15''-16,5''
Zinkanode für Gori-Propeller 15''-16,5''
Zinkanode für Gori 2-Blatt Saildrive Propeller / Ring
Product image of Zinkanode für Gori 2-Blatt Saildrive Propeller / Ring
Zinkanode für Gori 2-Blatt Saildrive Propeller / Ring
only 29 19 €
No rating yet
Available on 13.07.2020
Zinkanode für Gori 2-Blatt Saildrive Propeller / Ring
Zinkanode für Gori 2-Blatt Saildrive Propeller / Ring
Zinkanode für Gori 2-Blatt Saildrive Propeller / Ring
Zinkanode für Gori 3-Blatt Saildrive Propeller / Ring
Product image of Zinkanode für Gori 3-Blatt Saildrive Propeller / Ring
Zinkanode für Gori 3-Blatt Saildrive Propeller / Ring
only 29 19 €
No rating yet
Available on 13.07.2020
Zinkanode für Gori 3-Blatt Saildrive Propeller / Ring
Zinkanode für Gori 3-Blatt Saildrive Propeller / Ring
Zinkanode für Gori 3-Blatt Saildrive Propeller / Ring
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


 

Customer Ratings & Reviews

All reviews (103.645)
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Charl D. on 07.07.2020

Good service all round

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P A I M. on 06.07.2020

ARRIVED WELL PACKED AND ON TIME.

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Kim R. on 06.07.2020

Excellent - fast delivery

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