b4b has patented, developed, and ground-validated (TRL6/7) a highly novel wingsail based on aeronautics which, making use of the wind as renewable energy source for propulsion, reduces up to 30% of the fuel used in maritime transport (merchant vessels, fishing vessels, passenger vessels, etc.), reducing operating costs and the environmental impact of the maritime industry, also complying with new International Maritime Organisation (IMO) regulations and the European Green Deal goals. So far, the company has two patented different type of wingsails: a foldable wingsail more suitable for vessels with space and maneuverability restrictions; and a suction-based wingsail (eSAIL), suitable for vessels with no restrictions and also more affordable for smaller vessels, like fishing vessels. The eSAIL thanks to our first paying customer and two EU funded projects (neither EIC nor SMEInst funding involved), is currently being tested on a fishing vessel and on a small merchant vessel.
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