The Crown Estate commissioned this analysis to help the maturing European offshore wind industry understand the supply chain challenges it faces and consider how they might be resolved. Offshore Wind: A 2013 supply chain health check forms part of The Crown Estate’s work in supporting the Offshore Wind Programme Board , and updates and extends previous gap analyses undertaken by BVG Associates in 2009, 2011 and 2012. As before, it is based on extensive consultation with, and feedback from, developers and suppliers in key areas of the supply chain.