Hydrogen fuel cells have emerged as an important development direction for future marine power sources. With rapidly increasing complexity in ship power systems, traditional document-centric systems engineering methods fail to meet the research and development demands for rapid iterative of hybrid power systems. To address this, a design and verification method is proposed for the hybrid power system of hydrogen-fueled ships based on Model-Based Systems Engineering (MBSE) method. Firstly, the SysML language is employed to perform the hierarchical decomposition modeling at the overall, system and subsystem levels according to the requirement definition, functional analysis and logical design based on the overall engineering requirements. The functional logic rationality of the model is then verified through the integrated simulation verification of the model. Finally, a Simulink simulation model is built to simulate and calculate the performance parameters of the hybrid power system of the hydrogen-fueled ship. The feasibility of the design and verification process and the effectiveness for the design iteration of complex systems are validated on the hybrid power system of a hydrogen-fueled ship. It can provide a reference for the application of MBSE method in other ships.

In 2024, the world economy maintained relatively stable growth with increasing economic growth differentiation among different economies. Energy prices and transportation costs have increased due to geopolitical conflicts such as the Red Sea, resulting in significant growth in the transportation market led by container ships. Key indicators of the shipbuilding industry remained on an upward trend. In terms of deadweight tonnage, global new ship orders increased by 65% year-on-year, and China’s share of global new ship orders has expanded to 75%. In the new ship orders, vessels utilizing alternative fuels account for 47%, container ships achieved a year-on-year increase of 121% (in terms of TEUs), oil tankers increased by 48.9%, bulk carriers increased by 22%, and Very Large Amonia Carriers (VLACs) increased by 79.3%. The global orderbook increased by 37.62% year-on-year, with a 2% increase for container ships, a 215% increase for oil tankers, and a 56% increase for bulk carriers. The shipbuilding industry is expected to continually grow in 2025, but with a decreased growth rate, and greening will still be the hot topics.