Corrosion due to seawater studies are urgently required for a safe technology development. Some studies demonstrated that the corrosion rates for most alloys could be four times less than surface corrosion rates. A device for continuous electrochemical measuring of corrosion in real time and underwater has been designed. Therefore, this equipment allows improving the knowledge about long -term materials behavior in this aggressive environment for the scientific community. Also, it has been designed to allow the connection to underwater observatories such as OBSEA . In this paper we expose the first tests have been conducted in a real environment such as OBSEA.

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