MOIRAI endeavors to weave a comprehensive understanding of the ocean's dynamics and biogeochemical cycles through advanced models, integrating historical data, current observations, and future projections. Integrated into the frameworks of Destination Earth and the European Digital Twin of the Ocean, key components of the broader Digital and Green transitions, MOIRAI aims to significantly advance our comprehension and mitigation of climate-related challenges. AU is involved in a model case study of the North Sea focusing on offshore wind farm development and low trophic aquaculture.