Saitec Offshore Technologies' (Saitec) BlueSATH floating wind platform has capsized off the coast of Santander, Spain. During storm Epsilon, the prototype was subject to waves up to 10 metres in height.The prototype was installed during the summer, and was planned to be in operation for 12 months, after which it would have been decommissioned. The prototype aimed to test a 1:6 scaled prototype of a 10MW wind turbine using SATH floating (Swinging Around Twin Hull) technology in real sea environment, typically 3 metre wave heights for this region. Prior to offshore deployments, several testing campaigns were carried out with scaled models. During the recent storm Epsilon, waves reached heights close to 10 metres at the installation site well above the forecasted and the historically registered. These waves ended up capsizing the scaled model. The device has already been retrieved and transported to the shipyard.