Sector coupling offshore is key to building an efficient and resilient North Sea energy system. Within the AquaVentus initiative, we envision a technological “triple jump”: starting with pilot projects, moving to the SEN-1 stage for first industrial-scale offshore electrolysis and ultimately reaching fully integrated offshore wind clusters with large-scale hydrogen production. This approach enables efficient energy transportation, converting renewable electricity into hydrogen directly offshore and reducing grid congestion while optimizing spatial planning in the North Sea. At the same time, such systems require coordinated maritime spatial planning and shared infrastructure corridors. Ultimately, success will depend on close international collaboration among North Sea neighbouring states to build interconnected offshore energy and hydrogen networks as well as hubs.