Skysails and KiteShip both made kite rigs. MS "Beluga SkySails" is a German commercial container cargo ship. Newer hybrid ship-propulsion schemes include large towing kites manufactured by companies such as SkySails. She was heavily sparred, with single topsail yards, and three skysails. SkySails sources its kites from North Sails New Zealand. SkySails estimates the potential upgrade market for its system at more than 40,000 ships. SkySails is a leader in saving fuel in the shipping industry by using CWKPS.