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Alternative Fuels

DNV: Seven steps to obtain approval for ammonia- and hydrogen-fuelled ships

DNV summarizes how shipowners can apply a practical, structured approach to gaining approval for ammonia- or hydrogen-fuelled ships as both are gradually emerging as suitable bunker fuels.

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Classification society DNV on Monday (28 April) released an article summarizing how shipowners can apply a practical, structured approach to gaining approval for ammonia- or hydrogen-fuelled ships. 

From engaging early with flag administrations to addressing design risks, training crews, and managing bunkering safely, DNV described seven essential steps to receive approval:

The paper – Safe introduction of alternative fuels: Focus on ammonia and hydrogen as ship fuels – offers a structured pathway for shipowners to achieve approval through IMO’s alternative design approval (ADA) process.

Seven steps to obtain approval for ammonia- and hydrogen-fuelled ships

“We outline seven steps to assist shipowners and other stakeholders in obtaining approval and safely deploying ammonia- and hydrogen-fuelled ships in today’s immature regulatory environment,” says Linda Hammer, Principal Consultant, Environment Advisory at DNV and lead author of the white paper. “The regulatory path is certainly complex, but the steps and safety measures in the paper add up to a clear, achievable pathway to ship approval and safe operations. It also explains how DNV’s support can significantly ease this process through its tailored rule sets and learnings from pilot projects.”

t1 ind 586 steps to obtain approval (1)

Understanding ADA phases: From initial design to final approval

IMO’s IGF Code (International Code of Safety for Ship Using Gases or Other Low-flashpoint Fuels) currently covers natural gas but not ammonia or hydrogen. Without detailed regulations, IMO’s risk-based ADA process (MSC.1/Circ.1455) is used. It involves demonstrating that the ship’s safety level is equivalent to that of conventional oil-fuelled vessels.

t4 ind 586 milestones in the two phases (1)

ADA has two main phases. A preliminary design approval requires a hazard identification (HAZID) study, developing a preliminary risk assessment, and defining preliminary risk-control measures and safety strategies.

Phase two, final design approval, starts with refining the design with detailed technical and safety documentation, then making a final risk assessment, addressing integration and operation-specific concerns. Then come complete system integration testing and submitting findings to the flag administration.

Role of class and flag administrations in approval process

As the IMO regulatory framework progresses towards eventually amending the IGF Code, classification societies like DNV can give shipowners a head start in designing vessels by issuing class certificates and providing prescriptive rule frameworks to support ADA. 

t2 ind 586 the status of the development of imo safety regulations

Flag administrations enforce statutory regulations and have the final say on approvals. Early and active engagement with the relevant flag administration is therefore the key to clarifying approval expectations and streamlining ADA.

Subject to flag administration acceptance, the DNV rules can be applied as the flag administration’s approval basis or to significantly reduce the complexity of ADA.

Simplifying ship approval: DNV’s rules for ammonia and hydrogen fuels

DNV’s classification rules for ammonia and hydrogen (i.e. the “Gas fuelled ammonia” notation published in 2021 and the 2024 “Gas fuelled hydrogen” notation) provide structured, prescriptive requirements as far as possible to simplify ADA. Applying them helps reduce uncertainty in flag administration approval, streamlines design focus by aligning with expected risk assessments, and provides predictability to shipowners, ship designers and shipyards.  

The paper describes step-by-step actions for obtaining approval. First, engage DNV and the flag administration early to clarify the approval basis. “DNV can help owners and yards in the initial contact with the flag administration to obtain necessary clarification regarding the approval scope and process,” says Hammer.

Second, align the design with DNV rules to ensure it provides a strong technical basis for risk evaluation. Third, tap into DNV’s extensive and growing experience from prior projects to anticipate what risk studies and documentation may be needed.

The paper also discusses measures to manage the new technical, human and organizational risks that both fuels bring compared to conventional fuels. DNV’s dedicated ship rules for each fuel type outline technical requirements and mitigation systems to integrate during design and operation.

Note: DNV’s full article on ‘Practical guide for approval of ammonia- or hydrogen-fuelled ships’ can be read here.

Related: DNV releases white paper on safe and scalable adoption of ammonia, hydrogen bunker fuels

 

Photo credit: DNV
Published: 30 April, 2025

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Bunker Fuel

Singapore: Bunker fuel sales drops by 6.8% on year in May 2026

4.55 million mt of various marine fuel grades were delivered at the world’s largest bunkering port in May, down from 4.88 million mt recorded during the similar month in 2025, according to MPA data.

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Singapore: Bunker fuel sales drops by 6.8% on year in May 2026

Sales of marine fuel at Singapore port dropped by 6.8% on year in May 2026, according to data from the Maritime and Port Authority of Singapore (MPA).

In total, 4.55 million metric tonnes (mt) (exact 4,548,000 mt) of various marine fuel grades were delivered at the world’s largest bunkering port in May, down from 4.88 million mt (4,878,100 mt) recorded during the similar month in 2025.

Deliveries of marine fuel oil, low sulphur fuel oil, ultra low sulphur fuel oil, marine gas oil and marine diesel oil in May (against on year) recorded respectively 1.79 million mt (-5.3% from 1.89 million mt), 2.29 million mt (-6.5% from 2.45 million mt), zero (-100% from 1,200 mt), 600 (35.2% from 1,700 mt) and zero (from zero).

Singapore: Bunker fuel sales drops by 6.8% on year in May 2026

Bio-blended variants of marine fuel oil, low sulphur fuel oil, ultra low sulphur fuel oil, marine gas oil and marine diesel oil in May, (against on year) recorded respectively 11,600 mt (-71.6% from 40,900 mt), 36,400 mt (-62.1% from 96,100 mt), zero (from zero), zero (from zero) and zero (from zero). B100 biofuel bunkers, introduced in February last year, recorded 12,800 mt (+573.7% from 1,900 mt). 

LNG and methanol sales were 70,300 mt (+56.2% from 45,000 mt) and zero (from zero) respectively. There were no recorded sales of ammonia for the month and so far since 2025.

 

Photo credit: Maritime and Port Authority of Singapore
Published: 15 June, 2026

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Alternative Fuels

Hong Kong expands support for alternative bunker fuels with new vessel incentives

Port Dues Incentive Scheme for Green Maritime Fuel-related Vessels and the Green Vessels Registration Incentive Scheme will be launched on 16 June for a period of three years.

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Hong Kong

The Marine Department (MD) on Friday (12 June) announced that the Port Dues Incentive Scheme for Green Maritime Fuel-related Vessels and the Green Vessels Registration Incentive Scheme will be launched on 16 June for a period of three years, with a view to encouraging more vessels to bunker green maritime fuels in Hong Kong and accelerating the green transformation of the Hong Kong fleet.

To leverage the trend of decarbonisation in the international shipping industry, the Government has committed in the Action Plan on Green Maritime Fuel Bunkering promulgated in November 2024 the provision of various financial incentives to help lower the cost of transitioning to green maritime fuels by the maritime industry and expedite the development of Hong Kong as a green port. 

In this year’s Budget, the Government has allocated approximately $34 million to implement relevant initiatives, including providing port dues concessions for vessels powered by green maritime fuels as well as those carrying green maritime fuels, and offering incentives for green fuel-powered vessels registered in Hong Kong.

The Port Dues Incentive Scheme for Green Maritime Fuel-related Vessels provides concessions for green maritime fuel-related vessels, including ocean-going vessels (OGVs) powered by or bunkering specified green maritime fuels in Hong Kong, and OGVs carrying green maritime fuels for supply in Hong Kong. 

Specified green maritime fuels covered under the Scheme refer to liquefied natural gas (LNG), methanol, ammonia, hydrogen, and bio-diesel (blended with at least 20% bio-fuel). Eligible OGVs conducting specified operation(s) throughout their stay in Hong Kong may apply for a reimbursement of their port dues (including port facilities and light dues, anchorage dues, buoy dues and fees for port clearance permits) paid in accordance with the Shipping and Port Control Regulations (Cap. 313A). The amount of the incentive is equivalent to 25% or 50% of the port dues paid.

Eligible shipowners or their agents must submit the application form together with the required supporting documents to the MD within three months of their vessels’ completion of the above operation(s) in and departure from Hong Kong. The approved incentive amount will generally be disbursed within 30 working days. The amounts of incentives applicable to different types of OGVs are set out in the Annex.

A spokesman for the MD, said: “Following the launch of the Green Maritime Fuel Bunkering Incentive Scheme last year, the new initiative further provides incentives to encourage the industry to adopt green maritime fuels, which are often more expensive than traditional fuels, and to build up demand for green maritime fuel bunkering services in Hong Kong early. 

“This will in turn attract other players in the green maritime fuel bunkering supply chain, such as bunker suppliers, bunker operators and traders, to establish and expand their operations in Hong Kong. We expect this scheme to attract more than 1,000 visits to Hong Kong by green maritime fuel-related vessels.”

Meanwhile, the Green Vessels Registration Incentive Scheme provides incentives to green fuel-powered vessels currently or newly registered in the Hong Kong Shipping Registry (HKSR), thereby attracting and retaining the registration of green vessels in Hong Kong.

Under the scheme, all Hong Kong-registered ships that use green maritime fuels as their primary propulsion fuel, which include LNG, methanol, ammonia and hydrogen but exclude conventional fuels and biofuels, will be eligible to apply. 

During the three-year period of the scheme, each eligible vessel will be provided with a subsidy of HKD 60,000 once every year, and may enjoy one or at most three years’ incentives depending on the timing and duration that the vessel is registered with the HKSR. 

Each vessel is eligible to receive a maximum subsidy of HKD 180,000. Approval and disbursement of the incentives will take approximately three months from the receipt of an application with all required supporting documents. The vessel’s Hong Kong registration status must be maintained on the date the incentive is disbursed. 

The spokesman, said: “This scheme will encourage vessels using green maritime fuels to register in Hong Kong and promote the green transformation of the Hong Kong fleet, which will further enhance the overall competitiveness of the HKSR. We estimate that this scheme will attract approximately 100 vessels powered by green maritime fuels to register with the HKSR. Alongside the vessels powered by green maritime fuels currently registered in Hong Kong, we expect that around 170 such vessels registered in Hong Kong will benefit from the scheme within three years of implementation.”

Note: For details of the Port Dues Incentive Scheme for Green Maritime Fuel-related Vessels and the Green Vessels Registration Incentive Scheme, visit the MD’s webpages (www.mardep.gov.hk/filemanager/en/share/forms/pdf/md558.pdf ; www.mardep.gov.hk/filemanager/en/share/forms/pdf/md743.pdf).

 

Photo credit: M on Unsplash
Published: 15 June, 2026

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Biofuel

Bunker brokerage Norwegian Energy Trading renews ISCC certification for biofuel trading

‘Our biofuel volumes have been growing steadily, and we’re committed to keeping pace with where the market is genuinely heading — not where it’s announced to be heading,’ says firm.

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Bunker brokerage Norwegian Energy Trading renews ISCC certification for biofuel trading

Bunker brokerage Norwegian Energy Trading (NET) recently announced that its International Sustainability and Carbon Certification (ISCC) certification for biofuel trading has been renewed for another year.

NET said certified mass balance, full chain of custody, and verifiable GHG savings are the foundation of any credible bio offering.

The company added that the renewal comes at the right time.

“Our biofuel volumes have been growing steadily, and we’re committed to keeping pace with where the market is genuinely heading — not where it’s announced to be heading,” it added.

 

Photo credit: Norwegian Energy Trading
Published: 15 June, 2026

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