Maersk is testing a giant spinning cylinder to cut fuel use on cargo ships
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. The test comes a

<p>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.
The test comes a</p>