Classification society ClassNK on Tuesday (18 August) said it has revised the safety requirements within its guidelines for ships using methanol, ethanol and hydrogen as marine fuels. 

In Part D of the guidelines, covering hydrogen-fuelled ships, the revision incorporates the Interim Guidelines for the Safety of Ships Using Hydrogen as Fuel (MSC.1/Circ.1701) issued by the IMO this year, and additionally introduces a hydrogen leak frequency table that can be used for the safety assessments required under the IMO guidelines. 

In Part A, covering methanol and ethanol-fuelled ships, new structural strength requirements for methanol/ethanol fuel tanks—which are not addressed in the IMO guidelines—have been established. 

“Through this revision, shipyards, designers, and shipowners can carry out design and safety assessments in line with the latest international standards, and by utilizing ClassNK’s own leak frequency estimates and the relevant requirements, they can proceed the development of alternative-fuelled ships in a more rationally,” ClassNK said in a statement. 

As the building of alternative-fuelled ships advances in response to the global challenge of reducing GHG emissions, ClassNK has comprehensively compiled the safety requirements for ships using methanol, ethanol, LPG, ammonia, and hydrogen—fuels regarded as promising alternatives—and has issued the guidelines. 

“Taking into account the risks that the use of alternative fuels poses to the environment, seafarers, and ships, the guidelines set out requirements for equipment, controls, and safety devices to minimize such risks,” it added. 

With the issuance of the IMO guidelines for hydrogen-fueled ships (MSC.1/Circ.1701), ClassNK said it has fully incorporated the IMO guidelines to make the guidelines more user-friendly for shipyards, designers, and shipowners, while also enhancing the requirements serving as design and assessment guidance for other alternative fuels. 

In the development of the IMO guidelines, now reflected in Part D, ClassNK participated as a member of the Japanese delegation to the IMO Sub-Committee CCC 11 and contributed to the discussions.

Note: The Guidelines for Ships Using Alternative Fuels (Edition 3.1)  can be viewed under “Guidelines” on My Page by registering as a user on the ClassNK website. 

Photo credit: Venti Views on Unsplash
Published: 20 August, 2026

The Clean Shipping Alliance (CSA) and the Marine Fuels Alliance (MFA) on Wednesday (19 August) said they have signed a Memorandum of Understanding (MoU) to support the shipping industry and bunker suppliers in meeting regulatory requirements on emissions, and to advance the transition to alternative fuels and emissions reduction technologies.

The agreement will see CSA’s expertise in exhaust gas cleaning systems and marine environmental technology brought together with MFA’s network and knowledge across the marine fuels supply chain. 

Both organisations share an interest in supporting the maritime industry’s transition toward a sustainable, compliant and lower-emission future, and the agreement sets out a structure for the two bodies to share technical insight and coordinate on regulatory pathways.

Through the collaboration, the two associations intend to encourage dialogue between technology providers, fuel suppliers and ship operators, share technical insights and support the development of practical regulatory pathways.

Under this framework, the two associations will:

• Share technical data and research: on MARPOL compliance, alternative fuels and emissions reduction technologies.
• Coordinate joint advocacy: including at the International Maritime Organization (IMO) level and alongside sessions of the IMO’s Marine Environment Protection Committee (MEPC).
• Support industry events: on fleet modernisation, retrofitting and fuel quality standards.
• Develop practical operational guidance: linking technology providers, fuel suppliers and ship operators.

Andreas Chrysostomou, Executive Director of the Clean Shipping Alliance, said: “Shipping’s compliance and availability challenges won’t be solved by one technology or one fuel. It needs ongoing communication between different elements of the value chain, and that’s why CSA and MFA have signed this MoU. Technologies, fuels and regulation cannot be considered in isolation, and by working together we can bring together complementary expertise, improve the exchange of technical knowledge and contribute to solutions that are both environmentally effective and operationally realistic.”

Anthony Mollet, Executive Officer of the Marine Fuels Alliance, said: “The CSA brings a wealth of technical knowledge and first-hand industry experience, particularly in relation to emissions, environmental regulation and the technologies being adopted by shipowners and operators. This partnership will give our members an important additional source of expertise and insight, helping them better understand the challenges facing the industry and make informed decisions as the transition towards cleaner shipping continues.

“For companies across the contractual chain in bunkers, it is increasingly important to understand the decisions being made by shipowners and operators around fuel choice, emissions technologies and the future fuels they intend to use. 

“The selection of a particular fuel grade or technology can have significant implications throughout the bunker supply chain, from contractual arrangements and fuel specifications to supply and operational considerations. This is a key area of focus for the MFA, and we are committed to providing our members with clear, practical and relevant resources to help them navigate these developments.”

The non-binding MoU will initially remain in effect for two years, with both associations designating points of contact to coordinate joint initiatives and regularly review the collaboration.

Photo credit: Clean Shipping Alliance and Marine Fuels Alliance
Published: 20 August, 2026

Bunker supplier Avenir LNG on Wednesday (19 August) said its bunkering vessel Avenir Advantage has completed its first LNG bunkering delivery to Royal Caribbean Group’s cruise ship, Icon of the Seas in Honduras, marking a milestone for the company’s LNG supply operations in the Caribbean.

The company said the operation supports the cruise industry’s transition towards lower-emission marine fuels while demonstrating the flexibility of small-scale LNG infrastructure in the region.

Avenir LNG thanked Axpo Group, the vessel’s crew, shore teams, port stakeholders and other partners involved in the operation.

The company added that it aims to support further safe and reliable LNG deliveries in the future. 

Photo credit: Avenir LNG
Published: 20 August, 2026