The Guardian

I remember seeing in an old encyclopedia pictures of a ship which was propelled by two giant rotating vertical columns in place of sails. How did this work, and why why was it ...

The rotating-sail ship was developed by Anton Flettner, a German engineer at the University of Gottingen in 1922. He had been carrying out experiments to determine how much greater the force exerted ...
Mining

Vale set to receive first-ever wind-powered ore carrier

Vale expects to receive in coming weeks its first-ever mineral transport ship propelled in part by sails, the company said on Thursday. The ship, a VLOC, or very-large ore carrier, will also be the ...
The Australian

Wind power the next innovation in shipping

The latest effort by Denmark’s Maersk Tankers uses rotating cylinders about 30m high that can function as hi-tech sails. The company, a unit of AP Moeller Maersk, said it would begin testing on one of ...
CNBC

Maersk tankers to be fitted with huge rotating sails to cut fuel bills

Maersk Tankers, the energy shipping division of Danish cargo giant Moller Maersk, is to fit two, 30 meter rotating sails to one of its vessels. Finnish company Norsepower said its modernized version ...