Hydrogen at Sea Just Got Even More Expensive: What DNV’s Safety Findings Mean
Why it matters: Safety‑driven cost spikes could stall hydrogen’s role in maritime decarbonisation.
- DNV warns that hydrogen ships require heavyweight safety systems—double‑walled tanks, inert gas blankets, and rigorous leak detection—driving up build costs by 30‑50 %.
- EMSA commissioned the study to inform EU maritime policy, highlighting that safety compliance could become the biggest barrier to hydrogen adoption.
- European Commission still backs hydrogen as a decarbonisation lever, but acknowledges the need for subsidies or regulatory leeway to offset the new cost curve.
- Shipbuilders such as Wärtsilä and MAN Energy Solutions argue that engineering hurdles are solvable, yet they concede timelines may slip to 2035‑2040 without accelerated funding.
DNV’s final safety study for EMSA flips the hydrogen‑shipping debate from a green‑ideal to a costly engineering challenge. While the report stops short of calling hydrogen‑fuelled vessels impossible, it flags extensive safety upgrades that could add billions to capex and push commercial rollout into the mid‑2030s. Industry players and EU policymakers now must weigh these added costs against decarbonisation targets.
