In a collaborative effort between the China-UK Low Carbon College at Shanghai Jiao Tong University and the Energy Institute at University College London, a pioneering study introduces a novel solid oxide fuel cell (SOFC) system powered by ammonia (NH3) for all-electric ships. This research, published in 2025, aims to revolutionize sustainable maritime solutions by providing an efficient and environmentally friendly approach to ship propulsion. The International Maritime Organization's targets for increased usage of NH3 and hydrogen (H2) in newly constructed ships by 2060 align with the innovative NH3-fueled SOFC system's capabilities. The study addresses technical hurdles with NH3 fuel SOFC ship power systems, introducing an integrated ammonia cracker for rapid hydrogen production, crucial for efficient NH3 decomposition. The system, designed for a 96 kW rated power target ship, achieves high electrical efficiency and space optimization. Experimental results showcase the system's efficiency, with low emissions and noise levels, contributing significantly to decarbonization efforts in the maritime industry. The research findings mark a significant step towards green marine power systems, highlighting the potential of NH3 as a viable and sustainable alternative fuel. The study's innovative approach not only advances technology but also supports global initiatives in reducing ocean carbon emissions. The NH3-fueled SOFC system's success in achieving high efficiency and low environmental impact paves the way for a sustainable future in the shipping sector, emphasizing the importance of transitioning to clean energy sources for a greener maritime industry.