DNV Launches Hydrogen Fuel Recommended Practice Maritime Activity Reports, Inc. May 20, 2026 Cristina Saenz de Santa Maria, CEO Maritime at DNV. © DNV DNV has released a new recommended practice (RP) for hydrogen as ship fuel. It outlines the competence requirements for crew, inspectors, and technical personnel to support the proper handling of hydrogen systems on board ships. Hydrogen is gaining traction as a marine fuel, with seven vessels currently in operation and another 30 in the orderbook. However, several safety barriers like hydrogen leakage, low ignition energy, and management of high‑pressure or cryogenic storage, still limit its uptake. But with proper training and a strong safety culture, and with ship designs engineered to limit risk as much as possible, its use can be managed more safely and efficiently. The DNV-RP-0703 “Competence related to use of hydrogen as fuel” addresses hydrogen’s specific risk profile by defining structured competence requirements. The RP can also be used as a basis for operational procedures and emergency preparedness planning. It builds on DNV’s existing competence framework for low‑GHG fuel, following RPs and Standards for LNG, ammonia, and methanol. “Hydrogen represents one of several possible pathways in maritime decarbonization. The development of efficient safety regulations and guidelines is fundamental for hydrogen to evolve from large-scale demonstration to commercial use," said Cristina Saenz de Santa Maria, CEO Maritime at DNV. "To get there it is essential that the industry develops competence levels among seafarers in parallel with technical solutions so that they can operate hydrogen‑fueled vessels with confidence.” DNV’s RP is designed to supplement existing regulatory frameworks such as the STCW Convention and ISM Code by providing hydrogen‑specific competence guidance for organizations considering using hydrogen as a marine fuel. It is also intended for use by shipowners and operators for onboard familiarizat