Biocide-free paints rely on physical properties such as fouling release paints which are free from
biocides. These paints are usually silicon based and forms a smooth non-stick surface on the hull
where fouling organisms have problems to attach. Other paints such as Epoxi can be useful for
underwater hull cleaning.
The video below explains how a biocide free silicone paint works
The video below shows the way to apply a silicone paint, in this case SilicOne from Hempel, on a leisure boat.