Testing has begun on the recently installed rotor sails on the MV Maersk Pelican. The two large cylinders installed on the deck of the 110,000 DWT Long Range 2 product tanker may not look much like sails but may represent the future of sail assist technology in commercial shipping. The 30 meter tall and 5 meter in diameter rotors, the world’s largest, are a modern version of the Flettner rotor developed in the 1920s. When the rotors are spun in a wind, they develop lift which can be used to propel a ship or to reduce the fuel consumed by the main engines. The rotor sails on the Maersk Pelican are expected to reduce fuel consumption by 7 to 10% on average.
The rotor sails were provided by Norsepower Oy Ltd., working with project partners Maersk Tankers, Energy Technologies Institute (ETI) and Shell Shipping & Maritime.