Device for the cathodic protection of metal components of boats

A device for cathodic protection (100) arranged to provide an impressed current cathodic protection of a metal element (10) configured to be immersed in an electrolytic environment, said device for cathodic protection (100) comprising:

• a container body (110) comprising an inner chamber (111) and at least one conductive interface (115) arranged to be electrically connected to said metal element (10);
• an anode (120) integral to said container body (110) and having a portion which faces externally with respect to said container body (110);
• a direct current source (140) disposed in said container body (110) and comprising a negative pole, electrically connected to said conductive interface (115), and a positive pole, electrically connected to said anode (120);
• said device for cathodic protection (100) characterized in that it comprises furthermore:
• a reference electrode (130) integral to said container body (110) and having a portion which faces externally with respect to said container body (110);
• a control unit (150) disposed in said container body (110) and configured to measure an electric voltage ΔV between said conductive interface (115) and said reference electrode (130) when said device for cathodic protection (100) is immersed in an electrolytic environment;
• and in that it is configured in such a way that, when said control unit (150) detects an electric voltage ΔV>ΔV*, where ΔV* is a predetermined threshold value, said direct current source (140) supplies an electric current I between said conductive interface (115) and said anode (120) such as to restore a condition ΔV≤ΔV*.