GoKawiilEach 115-foot-tall rotor sail could help vessels save hundreds of thousands of dollars a year on fuel costs—and significantly reduce emissions. On a cargo ship packed with 8,700 shipping containers, there isn’t much room for anything else. But in a new test aboard one of its vessels, Maersk is making an exception for a giant rotor sail—a spinning cylinder 10 to 12 stories tall that harnesses wind to help reduce fuel use.
Maersk is testing a giant spinning cylinder to cut fuel use on cargo ships
Why This Matters
Maersk is piloting a 115-foot rotor sail on one of its container ships, a spinning cylinder that harnesses wind to cut fuel consumption. Shipping is a hard-to-decarbonize sector, and retrofits like this could trim emissions and save hundreds of thousands of dollars per vessel each year. If the economics hold up, wind-assist tech could spread across global fleets that move most consumer goods.
Key Takeaways
- Maersk is testing a 10-to-12-story-tall rotor sail on a vessel carrying 8,700 containers.
- The wind-assist device is projected to save hundreds of thousands of dollars in annual fuel costs per ship.
- Beyond cost, the technology offers a meaningful emissions cut for a sector with few easy decarbonization options.
Worth a Look
Ninety Percent of Everything by Rose George — If Maersk's spinning rotor sail has you curious about the world of container shipping, Rose George's Ninety Percent of Everything is the perfect companion read. She rides along on a Maersk container ship to tell the story of the vast, mostly invisible industry that moves nearly everything we buy.
See Ninety Percent of Everything by Rose George on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Get alerts for these topics