Reduction of biofouling on watercraft

An arrangement for preventing biological growth or biofouling on a hull of a watercraft, the hull having an outside and an inside, wherein the arrangement comprises:

• a first electrically conductive film covering the outside of the hull on a first portion of the hull;
• a first electrical connector connecting to the first electrically conductive film;
• a second electrical connector connecting to the first electrically conductive film and spaced apart from the first electrical connector;
• and
• an electric power source connected to the first electrical connector and the second electrical connector;
• wherein the first electrically conductive film provides an uninterrupted electrical conductor between the first electrical connector and the second electrical connector, and wherein the electric power source is configured to generate a first electric current flowing in the first electrically conductive film from the first electrical connector to the second electrical connector.

A method for preventing biological growth or biofouling on a hull of a watercraft, wherein the hull has an inside and an outside, the method comprising:

• applying a first electrically conductive film on the outside of the hull on a first portion of the hull;
• connecting a first electrical connector to the first electrically conductive film;
• connecting a second electrical connector to the first electrically conductive film spaced apart from the first electrical connector, wherein the first electrically conductive film constitutes an uninterrupted electrical conductor between the first electrical connector and the second electrical connector;
• and
• connecting an electric power source to the first electrical connector and the second electrical connector, wherein the electric power source is operable to generate an electric current flowing from the first electrical connector to the second electrical connector in the first electrically conductive film.