Rustins yacht varnishes rustins yasv500 this yacht varnish from rustins is easy to apply and offers good resistance to rain sunlight frost salt and chemically polluted atmospheres formulated using tung oil to give maximum protection and durability to exterior hard and soft woodwork such as doors window frames cladding as well as marine woodwork it has excellent adhesion and will not flake or peel when correctly applied rustins yasv500 yacht varnish satin 500ml