The present master's thesis was carried out in collaboration with the Politecnico di Torino and Dumarey Propulsion, both located in Turin, Italy, focusing on reviewing and analyzing the standards, codes, and regulations governing the fuel cell gensets and all their sub-systems in different applications and their operational configurations, especially maritime applications. Fuel cells are a promising clean energy solution due to the growing environmental concerns and the need for greenhouse gas emission reduction. The EU’s climate strategy, in line with the Paris Agreement, includes a 55% emission reduction by 2030 and achieving net-zero by 2050. Proton Exchange Membrane Fuel Cells (PEMFCs) are energy conversion devices that are known for their high efficiency, low emissions, and compact operation.