“If you cannot measure it, you cannot improve it” (William Kelvin) Fibersail is a shape sensing system based on FBG fiber optic research and development to monitor and analyze wind turbine blades in terms of shape, condition, and behavior. The real-time information provided by our system will help wind turbine operators maximize performance and availability while preventing failures and minimizing maintenance costs from their assets. Our unique solution and approach with fiber optic sensors make it possible for a very easy and simple integration along the entire length of any critical structure ensuring the monitoring of its precise shape and behavior. Fibersail - Shaping the structures of tomorrow