The interesting part of Everllence and Silverstream’s Engine Supported Air Lubrication concept is not that ships can reduce drag by pushing air under the hull. That has been known for decades, and commercial systems are already in service. The interesting part is where the air comes from, because air lubrication’s ... [continued] The post Air Lubrication For Ships Is Real. The Air Still Isn’t Free. appeared first on CleanTechnica .

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