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LH2 fueled vessels

Liquified hydrogen is a promising low carbon fuel to decarbonize marine shipping.

Alternative fuelsMarine shippingInland shipping

Introduction

LH2-fuelled vessels use liquid hydrogen as onboard fuel, mainly through fuel cells or hydrogen-capable engines. Hydrogen as ship fuel is still in an early phase, with an example in ferries (MF Hydra and , as of 2027, Samskip Seashuttle), while research continues for ocean-going ships. For European ports, LH2-fuelled vessels require suitable bunkering, storage, safety procedures, emergency response and coordination with operators.

Value proposition

  • Liquid hydrogen can support zero-emission shipping

    Only when hydrogen is produced from renewable or low-carbon sources. It is relevant where batteries are not sufficient for vessel range or energy demand.

  • Strengthen competitiveness for clean-fuel corridors

For ports, the value lies in becoming prepared for future clean-fuel corridors and supporting inland, short-sea and eventually deep-sea applications. FuelEU Maritime also strengthens the policy case by reducing allowed well-to-wake GHG intensity for ships calling European ports over time. The business case of LH2 vessels remains uncertain because infrastructure costs are high and demand is still developing.

Port applicability

LH2-fuelled vessels are most relevant for European ports with early hydrogen demand, available space, safety capacity and strong links to inland or short-sea corridors. Inland and short-sea ports may be early adopters because routes are shorter and fuel demand is easier to plan. Large seaports may become relevant later for larger vessels, bunkering networks and integration with hydrogen energy hubs. Ports with limited space, weak emergency-response capacity or no hydrogen demand are less suitable for early implementation. Highly regulated passenger, ferry, RoRo and industrial ports may need to assess LH2 earlier because safety and continuity requirements are high.

Groups of innovations

  • Onboard LH2 fuel systems

    Vessels need cryogenic tanks, fuel supply systems and integration with fuel cells or hydrogen engines. Timing: pilot to scale-up; Pros: enables hydrogen propulsion; Cons: complex safety and storage requirements.

    MAGPIE Green energy container demo

  • Port bunkering systems

    Ports need dedicated LH2 bunkering systems, transfer equipment and vessel-specific procedures. Timing: pilot to scale-up; Pros: enables practical use of LH2 vessels; Cons: LNG bunkering experience cannot be copied directly because LH2 has different temperature, purging and material requirements.

  • Safety and monitoring systems

    Ports require hydrogen detection, ventilation, safety zoning, emergency shutdown and trained personnel. Timing: medium term; Pros: essential for safe operations; Cons: increases operational complexity.

  • Digital coordination tools

    Digital systems can support bunkering planning, safety-zone coordination, asset monitoring and communication between port, vessel and fuel supplier. Timing: medium term; Pros: improves coordination and reliability; Cons: depends on system integration and data sharing.

Impact

Impact level per aspect
ImpactLevelRemark
GHG emissionsLarge impact
Strong tank-to-wake GHG reduction potential
SafetyNegative impact
LH2 introduces cryogenic and flammability risks, so safety impact is negative unless strong controls are implemented.
Port efficiencyLimited impact
Limited short-term effect; efficiency improves only when bunkering processes become standardised.
ResilienceMedium impact
Adds a future fuel option to the fuelmix, but also increases dependence on new supply chains.

Port characteristics

Ports that should prioritise LH2-fuelled vessels are ports with hydrogen strategies, early vessel demand, available safety space and strong inland or short-sea routes. Ferry, RoRo, inland and industrial ports can be relevant early because they often have predictable operations. Large seaports may focus first on feasibility, regulation and integration with wider hydrogen infrastructure. Ports with existing alternative fuel experience may be better prepared, but LH2 still requires separate safety assessment. The strongest candidates are ports where shipowners, fuel suppliers and authorities can develop a corridor together.

Barriers and enablers

Enablers

  • DirectionalityEnabler

    EU climate rules and FuelEU Maritime support low-carbon fuel uptake.

  • Stakeholder interactionEnabler

    Strong cooperation is needed between ports, shipowners, fuel suppliers and regulators.

  • TechnologyEnabler

    Core technologies exist, but large-scale maritime application is still maturing.

Barriers

  • EconomicBarrier

    High investment and uncertain early demand.

  • KnowledgeBarrier

    Limited practical experience with LH2 bunkering

  • InfrastructureBarrier

    Bunkering, storage, safety zones and emergency systems require major adaptation

How to implement?

  1. Step 1

    Identify LH2 vessel demand and assess technical and safety feasibility

  2. Step 2

    Launch small-scale pilots on inland or short-sea routes

  3. Step 3

    Establish safety procedures, regulations, and emergency response

  4. Step 4

    Implement basic LH2 bunkering and storage solutions

  5. Step 5

    Expand operations and standardize procedures and training

  6. Step 6

    Connect with other ports to form safe, interoperable LH2 corridors

Timeline

The arrow below represents the expected development of the TRL of LH2 fueled vessels.
* Technical Readiness Level

What should a port do in the next 3 years?

In the next three years, a port should map possible LH2 vessel demand and compare it with other fuel options. If the expected demand is consistent with the investments required. it should identify suitable bunkering locations, safety distances and emergency-response requirements. The port should start discussions with shipowners, fuel suppliers, class societies, regulators and emergency services. A feasibility study or small corridor pilot can be prepared. Internal knowledge on LH2 safety, permitting and bunkering should also be developed.

Investment overview

CAPEX: Investments include LH2 bunkering equipment, cryogenic storage or connection to external supply, safety systems, detection, emergency shutdown, berth adaptations and digital monitoring. Larger ports may also need grid, hydrogen supply or distribution links. OPEX: Operational costs include maintenance, inspections, certification, staff training, emergency preparedness, safety management, insurance and energy losses related to storage or boil-off handling. Costs will remain high in early phases because volumes are low and procedures are not yet standardised.

Stakeholder overview

Below is an overview of the required involved stakeholders. LH2 implementation requires close coordination between port authorities, terminal operators, shipowners, fuel suppliers and technology providers. Port authorities manage spatial planning, safety governance and stakeholder alignment. While shipowners create demand and define vessel requirements. Fuel suppliers and bunker operators provide (green) LH2 supply and transfer operations. Class societies, flag states, national safety authorities and emergency services define safe operating conditions. Technology providers support tanks, transfer systems, sensors and digital monitoring.
Blue stakeholders are essential, white stakeholders are enabling

Knowledge base