Wärtsilä and Anemoi sign Rotor Sail MoU

Rotor Sails, also referred to as Flettner Rotors, comprise vertical cylinders which harness the renewable power of the wind to propel ships, using the aerodynamic phenomenon known as the magnus effect to provide additional thrust and deliver fuel and emission savings.

“Our patented designs overcome operational constraints such as air draft and cargo handling, making the technology suitable for the majority of shipping sectors,” said Kim Diederichsen, chief executive of Anemoi Marine Technologies.

“As the industry focuses on emission reduction targets and energy saving, we are collaborating with Wärtsilä to strengthen our offering and facilitate the global uptake of our Rotor Sails by offering clients a full end-to-end solution including sales, supply and lifecycle support,” he added.

Including wind propulsion solutions as part of Wärtsilä’s propulsion offering will facilitate further compliance with the IMO’s Energy Efficiency Design Index, adding to efforts to increase fuel efficiency and reduce emissions.

The collaboration will enable the adoption of wind-assisted solutions for most marine vessel types, with the immediate focus likely to be on dry and wet bulk vessels. Wärtsilä will promote the solution for both newbuild projects and for retrofitting to existing ships.