DESCRIZIONE
An antifouling coating composition comprising: (I) a binder component comprising at least one hydrolysable copolymer and at least one hydrocarbon resin wherein the total amount of hydrocarbon resin forms 1 to 50 wt% of the binder component (I); and (II) at least one an antifouling agent; wherein said hydrocarbon resin comprises a resin formed by the polymerisation of at least one monomer selected from a C5 aliphatic monomer, a C9 aromatic monomer, an indene coumarone monomer, or a terpene.