Rolls-Royce signed a contract with ship owner Fjord Line A/S to install LNG based power and propulsion systems in two cruise ferries being built at the Bergen Group Fosen AS yard in Norway. Each vessel will be equipped with four gas engines, powering a highly efficient Promas integrated rudder and propeller propulsion system. The gas-only fuelled engines will reduce Nitrogen Oxide (NOx) emissions by about 90 percent while Sulphur Oxide (SOx) and particulates emissions will be negligible.