Functionalised polymers with antimicrobial properties have many applications as fouling-resistant materials in the maritime sector. Two polymer-based fabrication systems – one using a cast epoxy resin and the other employing stereolithography to produce polyurethane-based designs – were both used to produce structures incorporating dispersed copper thiocyanate for testing and evaluation as fouling-resistant materials. (Image credit: Richard Piola and Dominic Hare.)