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First Minister Humza Yousaf (front left) and Smart Green Shipping CEO Diane Gilpin (front right) during the launch of FastRig wingsail, at Hunterston Parc near West Kilbride. Created by Smart Green Shipping, the Fastrig wingsail is intended to be retrofitted on the decks of tankers and bulk carriers and can be raised or lowered as needed. Picture date: Wednesday April 17, 2024. (KEYSTONE/PRESS ASSOCIATION IMAGES/Lesley Martin)