Thinner
Why thinning: Thinners increase the viscosity of the fluids to be applied
Boats are painted in multiple coats. The reason for painting more than one coat is to allow trapped air under the coat to escape. To do this, the first coat must fill the small irregularities on the surface of the boat, which remained after the preliminary work. Adding thinner to the first coat makes the paint or varnish more fluid to achieve this.
Just who tackles protection and care measures on the boat only at the end of the season and is faced with the first cold, must sometimes help so that thinned boat paint and / or Antifoulings also be applied well and can distribute evenly over the entire surface.