In particular, the technical feasibility and legal planning feasibility of all phases of the project were examined and confirmed. In addition, commercial aspects, marketing potential, pricing and regulatory design options were analysed. A conceptual design for the offshore hydrogen pipeline connecting the various hydrogen production sites for the different project phases has been developed. As part of this design extensive hydraulic analyses have been performed in order to determine the required pipeline diameter and pressure rating. Furthermore, the feasible pipeline route with a potential German landfall at the greater Wilhelmshaven or Büsum area for further connection to the German onshore hydrogen grid has been developed under consideration of the technical, environmental and regulatory conditions. In addition to this, the permitting framework with the relevant authorities and boundary conditions have been established. Besides this, the investment and operating costs for the complete pipeline system have been investigated.