German Multi-Purpose Freighter Adds Rotor Sail 30 April 2021 Eco-Flettner has added one of its rotor sail to Rörd Braren's ship the Annika Braren.Author: Capt. Johnhttp://feedproxy.google.com/~r/shipandbunker/~3/d2VsBPpojUU/481489-german-multi-purpose-freighter-adds-rotor-sail