Led by RINA, Task 2.2 identified the requirements for the desktop studies, defined the desktop studies and the data required for the studies of the SAFeCRAFT project. Four candidate vessels were identified (a 2,700 TEU containership, a 1,500 passengers RoPax ferry, a mid-sized cruise ship, and a 6,700 DWT tanker) and four Sustainable Alternative Fuels (SAFs) – liquid hydrogen, compressed hydrogen, ammonia, and liquid organic hydrogen carriers – were considered for the desktop studies. The criteria to select the powertrain options for each vessel – main engines, generators, fuel calls, batteries – and fuel combination, such as the technical operation, economic feasibility, safety, and environmental performance, were defined. The final report provides a preliminary technical analysis of the fuel handling and storage efficiency, the energy conversion efficiency, and the propulsion type efficiency for each scenario. The desktop studies were defined based on the data collected from the shipowners and the SAF providers, as well as the technical and regulatory feasibility of each power train concept. The preliminary concept design analysis showed that different types of SAFs have different impacts on the ship design, performance, and payload, depending on the storage requirements, energy density, and compatibility with the existing systems. The final outcome is a summary of the desktop studies and some recommendations for the selection of the most promising cases, to be developed in WP3 and WP4 (concept and basic design of the desktop studies) and in WP5 (development of the digital platform).
