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Industry first: DNV and industry consortium publish “Handbook for Hydrogen-fuelled Vessels”

The Handbook for Hydrogen-fuelled Vessels offers a roadmap towards safe hydrogen operations using proton exchange membrane fuel cells (PEMFC).

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A consortium of 26 leading companies and associations, led by DNV, has launched the “Handbook for Hydrogen-fuelled Vessels” to address the uncertainties surrounding hydrogen as ship fuel. The MarHySafe joint development project (JDP) aims to create a knowledge base for safe hydrogen operations in shipping:

Green hydrogen could play a crucial role in the maritime industry’s journey towards decarbonization. Many in shipping recognize hydrogen’s potential as a fuel, but the barriers to realizing this potential are substantial. Led by DNV, a consortium of 26 partners and observers have come together in the MarHySafe JDP to examine these challenges. The Handbook for Hydrogen-fuelled Vessels offers a roadmap towards safe hydrogen operations using proton exchange membrane fuel cells (PEMFC). It details how to navigate the complex requirements for design and construction, and it covers the most important aspects of hydrogen operations, such as safety and risk mitigation, engineering details for hydrogen systems and implementation phases for maritime applications.

“Green hydrogen is one of the zero carbon fuels that could be vital to meeting the IMO GHG goals, but as with other new fuels, there are still significant challenges regarding its safe and widespread implementation,” said Knut Ørbeck-Nilssen, CEO DNV Maritime. “We are fortunate to be working with companies that are really ahead of the curve in terms of hydrogen operations. Having such esteemed partners and observers on board this project makes the insights gleaned all the more valuable. Furthermore, it shows how the shipping industry can pool its collective expertise and to tackle these crucial issues. We work best when we work together – the handbook is testament to this.”

Some of the main challenges for hydrogen operations in shipping include the current regulatory framework, which is open to interpretation by different stakeholders, existing knowledge gaps on the safe handling, storing and bunkering of hydrogen, as well as the unique properties of hydrogen that make it challenging to work with.

“This handbook provides a comprehensive overview of what companies need to consider with a hydrogen-fuelled vessel, as well as areas that require further investigation and testing before this technology can be taken up on a larger scale,” said Nathaniel Frithiof, Senior Consultant, Environment Advisory at DNV Maritime and Project Manager for Phase II of MarHySafe. “But as MarHySafe progresses, we are working to ensure that the Handbook is much more than a static document, rather a knowledge hub that will be continually updated and will provide a basis for the future development of hydrogen rules.”

In the summer, the MarHySafe JDP enters into Phase II. This will include pre-calculated risk assessments, experimental testing, as well as more work on hydrogen bunkering and input towards standardization. Alongside this, the Handbook for Hydrogen-fuelled Vessels will be updated continually as the project progresses to reflect the current level of expertise in the industry.

The MarHySafe Phase 1 project partners include: the Norwegian Maritime Authority (NMA), the Norwegian Defence Materiel Agency (Naval Systems, NDMA), Equinor, Shell, Air Liquide, Linde, Kawasaki, Chart Industries, Parker, UMOE Advanced Composites, Hexagon Purus, Fincantieri, Feadship, HySeas Energy, Ballard, Cummins (previously Hydrogenics), Corvus Energy, A.V.Tchouvelev & Associates, Vancouver Fraser Port Authority, Redrock, Hydrogen Technology & Energy Corporation (HTEC), Memorial University, and DNV. The Norwegian Public Roads Administration (NPRA), the Standards Council of Canada, and the Norwegian Directorate for Civil Protection (DSB) were observers in MarHySafe Phase 1.

 

Photo credit: DNV
Published: 1 July, 2021

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LNG Bunkering

Osaka Gas conducts Osaka Bay’s first STS LNG bunkering operation

Acting through Singapore-based marine fuel trading firm Integr8 Fuels, Osaka Gas supplied LNG bunker fuel to an LNG-fuelled PCTC operated by an overseas shipping company calling at the Port of Kobe.

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Osaka Gas conducts Osaka Bay’s first STS LNG bunkering operation

Japanese energy company Osaka Gas on Friday (4 September) said it has successfully completed the first-ever ship-to-ship LNG bunkering operation in Osaka Bay, supplying LNG fuel to an LNG-fuelled PCTC.

The operation was conducted using SETO AZURE, an LNG bunkering vessel owned by Osaka Bay LNG Shipping Co Ltd, an affiliated company of Osaka Gas. 

Acting through Integr8 Fuels Pte Ltd, a Singapore-based marine fuel trading company, Osaka Gas supplied LNG fuel to an LNG-fuelled PCTC operated by an overseas shipping company calling at the Port of Kobe.

Ship-to-ship bunkering will help ensure a stable supply of LNG fuel in the Osaka Bay area and support the development of the Port of Kobe as a Carbon Neutral Port.

In addition to ship-to-ship bunkering, Osaka Gas provides LNG fuel through truck-to-ship bunkering and port-to-ship bunkering. With capability covering all three major LNG bunkering methods, Osaka Gas provides flexible and reliable LNG fuel supply services to meet customers’ diverse needs.

The company said LNG bunkering infrastructure in Japan remains insufficient, highlighting the need to establish a stable fuel supply network to support the wider adoption of LNG-fuelled vessels.

 

Photo credit: Osaka Gas
Published: 8 September, 2026

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Alternative Fuels

DNV at SMM: Yanmar Maritime awarded type approval for fuel cell system

Certification marked an important step in moving Yanmar’s maritime hydrogen fuel cell technology from successful domestic deployment toward broader commercial adoption in international markets.

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DNV at SMM: Yanmar Maritime awarded type approval for fuel cell system

Classification society DNV on Monday (7 September) said it awarded Yanmar Power Solutions Co Ltd, a subsidiary of Yanmar Holdings, type approval (TA) for its Maritime Hydrogen Fuel Cell System at the SMM trade fair in Hamburg last week. 

DNV said the certification marked an important step in moving Yanmar’s maritime hydrogen fuel cell technology from successful domestic deployment toward broader commercial adoption in international markets.

“This certification represents a significant milestone in the commercialization and global deployment of hydrogen fuel cell technology for marine applications,” the classification society said in a statement. 

The approval confirms that the GH-FC series complies with DNV’s industry leading rules and guidelines, enabling shipbuilders, system integrators, and vessel operators to adopt the technology with greater confidence and reduced certification burden for future projects.

Masaru Hirose, President and Representative Director of Yanmar Power Solutions Co Ltd, said: “Achieving DNV Type Approval represents a major milestone in our journey to bring hydrogen-powered solutions to the marine market. Building on our operational experience in Japan, we aim to support customers around the world in their transition to zero-emission operations and realize sustainable maritime transportation.”

Eric Tigelaar, Department Manager of Commercial Marine Department at Yanmar Europe, stated: “This certification strengthens our ability to support customers throughout Europe and beyond who are seeking practical pathways toward decarbonization. The GH-FC series combines easy installation, operational flexibility, modularity and environmental performance, making it an attractive solution for a wide range of vessel applications.”

Olaf Drews, Head of Engines & Pressurized Equipment, DNV Maritime, said: “We are very pleased to continue our cooperation with Yanmar and award them this latest Type Approval Award for their GH-FC series. Every step demonstrates the growing maturity of hydrogen fuel cell technology and continues to build confidence in the market and showcase its readiness for broader commercial applications. DNV is pleased to continue supporting innovative solutions that can help accelerate the transition toward zero-emission shipping.”

 

Photo credit: DNV
Published: 8 September, 2026

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Alternative Fuels

ORLEN and Port of Gdynia to explore LNG and bio-LNG bunkering in Poland

Cooperation will examine market demand, the potential scale of LNG and bioLNG bunkering, required infrastructure, operating conditions and the regulatory framework needed to support future services.

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ORLEN and Port of Gdynia to explore LNG and bio-LNG bunkering in Poland

Polish energy company ORLEN on Friday (4 September) said it has signed an agreement with Port of Gdynia Authority to assess the development of LNG and bioLNG bunkering services for marine vessels, as both organisations explore infrastructure and market solutions that could expand access to alternative fuels along the Polish coast.

The cooperation will examine market demand, the potential scale of LNG and bioLNG bunkering, required infrastructure, operating conditions and the regulatory framework needed to support future services.

One of the main areas under consideration will be waterside bunkering, including ship-to-ship operations, where fuel is transferred directly from a bunker vessel to another ship while in port.

Robert Soszyński, Vice President of the ORLEN Management Board for Operations, said the cooperation with the Port of Gdynia forms part of the Group’s broader fuel portfolio transformation through 2035.

Under ORLEN’s strategy, natural gas, including LNG, is expected to retain an important role as a transitional fuel supporting energy security and transport decarbonisation.

The company is seeking to strengthen capabilities across the full value chain, including fuel sourcing, logistics and final use.

At the same time, ORLEN is developing renewable fuel capabilities, including bioLNG, which the company sees as a potential route for reducing emissions in heavy-duty road transport and shipping.

Soszyński said ORLEN’s ambition is to work with ports not only as a fuel supplier but also as a partner in developing infrastructure and market conditions for alternative marine fuels in Poland and the wider region.

Piotr Gorzeński, CEO of the Port of Gdynia Authority, said the shipping industry’s energy transition is already changing the fuel and technology requirements faced by ports.

“Shipowners are increasingly examining ways to reduce emissions, while ports need to be capable of serving vessels using a wider range of propulsion technologies and fuels,” he said. 

The cooperation will include knowledge sharing and an assessment of requirements among shipowners and port users, particularly operators of scheduled ferry, container and ro-ro services.

ORLEN and the Port of Gdynia will also analyse bunkering models used at other European ports.

Among the options under review will be the suitability of ship-to-ship bunkering for larger vessels and the possibility of supplying fuel while ships are alongside the berth.

The partners will also examine whether bunkering could take place in parallel with cargo-handling operations.

 

Photo credit: ORLEN
Published: 8 September, 2026

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