The maritime industry may have long replaced sails with engines, but a UK startup is betting that wind-powered ships still have a bright future. Founded in 2014, Smart Green Shipping (SGS), has developed a new type of wind sail, called FastRig, that cuts carbon emissions. According to the company, it can be retrofitted to existing commercial vessels with available deck space, requiring no additional crew to operate it or port-side infrastructure changes. It’s also retractable to allow for standard loading and unloading operations, and it’s designed to be recyclable. FastRig is paired with the startup’s software tool, TradeWind, which provides…

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