This video presents a wind propulsion system by SkySails GmbH with a towing kite measuring up to 320 metres, that provides additional thrust for the ship at sea, a sustainable solution for reducing fuel consumption, costs and emissions. Depending on wind conditions, fuel costs can be lowered between ten and 35 percent. A small, 87-metre-long freighter would thus save an average of 280,000 Euros in fuel costs per year.