MAN Diesel & Turbo’s PrimeServ division in Frederikshavn has, in close cooperation with shipowner and constructional engineering company NCC, performed a propulsion equipment upgrade for the ‘MV Baltic’, a 900 m³ sand and gravel dredger. A 14 % improvement in fuel efficiency has been reported following an exchange and modernization of the vessel’s propeller blades and propeller nozzle.