Dock/Anchor/Suspended Anode | 180 x 22 | with rope & threaded terminal – V4A x 3 m | AlZn5IN | 9940AL

Usage:

A stringer or suspended anode is a sacrificial anode made of zinc or aluminum, depending on the specific application and environmental conditions. This anode is attached to ship hulls, boats, or other metallic structures in the water to protect them from corrosion. It works through the process of galvanic corrosion, in which the anode—being the less noble metal—attracts the corrosion process and gradually dissolves to protect the underlying metal.

Zinc and aluminum anodes are used in various environments; zinc is particularly suitable for saline waters such as seawater, while aluminum is used in brackish and freshwater.
Special caution is required in harbor basins or at dock facilities, as stray currents frequently occur there. These currents are generated by electrical systems, neighboring vessels, or other metallic structures in the water and lead to increased wear on the anodes, as they further accelerate corrosion.

The use of bar or hanging anodes is therefore particularly important, as increased anode wear can shorten the anode’s service life. If the anode is consumed more quickly, this can result in the protected components—such as propellers or rudders—being left unprotected due to the reduced mass of the anode. In such cases, there is a risk that these important parts, which would normally be protected from corrosion by the anodes, will become more susceptible to corrosion damage due to the premature loss of the anode itself.