 These vessels, with a theoretical maximum displacement up to 2,000 tonnes, would use a modular mission payload system to change between roles as required, and would be equipped for helicopter or unmanned aerial vehicle operations.The 2013 white paper postponed the multi-role OCV as a long-term project.The 2013 white paper proposed that an existing OCV design be sourced as a short-term replacement for the "Armidale" class.