The ABS-led consortium, in collaboration with CE Delft and Arcsilea, presented a thorough analysis of hydrogen as a marine fuel and wind-assisted propulsion at the 2024 SMM in Hamburg. The report delves into various aspects including greenhouse gas impact, sustainability, availability, scalability, techno-economic factors, regulations, risk, and safety. Panos Koutsourakis from ABS emphasized the significance of the study in offering comprehensive insights into these technologies. Dagmar Nelissen of CE Delft highlighted the importance of such analysis in aiding the maritime sector in meeting future GHG emissions regulations. Edwin Pang from Arcsilea acknowledged the value of the study in shedding light on safety, regulatory gaps, and implementation challenges. This ongoing project, part of a series of reports, is set to deliver a total of six reports with a focus on different alternative fuels. The report on hydrogen and wind propulsion is optimistic about the potential of these technologies. ABS is actively engaged in further research on maritime sustainability, including a study on the safety of ammonia as a marine fuel in collaboration with EMSA, NTUA, and Fundación Valenciaport.