LIBRARY OF CONGRESS / SCIENCE PHOTO LIBRARY LIBRARY OF CONGRESS / SCIENCE PHOTO LIBRARY
Rotor ship Buckau. Historical image of a ship powered by Flettner rotors (tall tubes). Rotor, or Flettner, ships use the Magnus effect for propulsion. The Magnus effect is a force acting on a spinning body in a moving airstream, which acts perpendicularly to the direction of the airstream.
Model release not required. Property release not required.