The Port of Gibraltar announced its participation in the Green Award scheme at an official ceremony on March 27, 2013. The Port will award sustainable ships certified by Green Award with a 5% reduction in tonnage dues starting April 1. In keeping with their mission to ensure navigational safety and pollution control, the Port of Gibraltar have decided to provide a 5% reduction in tonnage dues for all Green Award certified vessels entering BGTW (British Gibraltar Territorial Waters) and calling at the Gibraltar Port. Green Award’s managing director Mr.