https://www.dlr.de/en/media/publications/magazines/all-digital-magazines/dlrmagazine-177/a-voyage-of-rotating-cylinders/the-rotor-ship-buckau
The rotor ship Buckau
Black and white photo of Buckau with two cylinders from 1924
rotor shipbuckau
https://newatlas.com/norsepower-rotor-sail-viking-grace-passenger-ship/54208/
World's only Rotor Sail passenger ship goes into service
Sep 10, 2020 - Last year we detailed how Norsepower had rediscovered an engineering innovation, which sees large cylinders installed atop big ships harness wind for...
world srotor sailpassenger shipgoesservice