Quantitative evaluation of metals released into the marine environment from the galvanic anodes of ORE structures.

Duration: 12 months (2019 - 2020)


The use of cathodic protection by galvanic anode is an effective and long used method to fight against corrosion of metal structures immersed at sea (e. g. ships, docks on piles, offshore platforms…). The oxidation of these anodes, often composed of zinc or aluminium, causes the release and diffusion of metal elements in the form of ions or oxyhydroxides. With the development of ORE, the question of the effects of anode degradation has reappeared in civil society and been relayed by government departments, so it is important to be able to provide scientifically substantiated answers to this question.


To quantify the chemical compounds emitted by the galvanic anodes of ORE structures and the risk associated with their dispersion in the marine environment

Scientific and technical contents

  • Literature review of cathodic protection and their potential impact on the environment.
  • Modelling of the dispersion fluxes of metals released into the environment at different ORE sites located on French coasts
  • Characterisation of the chemical risk linked to metals from galvanic anodes for aquatic species (living in the water column)


Project sheet (PDF)

Recommendations report (PDF)

Partners and funding

This project is led by Ifremer and France Energies Marines.


The total project budget is €311K.

This project receives funding from France Energies Marines and its members and partners, as well as French State funding managed by the National Research Agency under the Investments for the Future Programme (ANR-10-IEED-0006-30).

Photo credit: Pichitstocker / AdobeStock

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