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A comment on Maersk installed 100-foot-tall rotating sails on one of its tankers. Parent comment

Re:Maersk installed 100-foot-tall rotating sails on one of i... by ars on Friday August 31, 2018 @01:11PM (#17887208)
Slow is OK, but it must be exactly predictable. Don't be early, don't be late.

So you can use sails to help, but if you rely on them you might be late.

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Re:Maersk installed 100-foot-tall rotating sails on one of i... by vladd on Friday August 31, 2018 @01:23PM (#17887298)
You can keep the timetable no matter what -- use sails just to save fuel consumption when weather is favorable.
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