The report "All at Sea" discusses the challenges facing the future of offshore wind energy in Europe. Despite its advantages as a clean and renewable energy source, the sector faces significant obstacles such as supply constraints, logistical difficulties, and technical concerns. Technical problems, such as lower availability levels for offshore wind turbines compared to onshore facilities, pose the biggest barrier to long-term growth. The remote nature of offshore installations also makes repair times much longer. Overcoming these challenges will be crucial for the expansion of the offshore wind sector in Europe.