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Alternative Fuels

GreenVoyage2050 Low Carbon GIA maps regulatory status of alternative bunker fuel usage

Ammonia, hydrogen, ethane and Dimethyl Ether (DME) are among the “alternative” marine fuels which may need future regulatory work, according to regulatory mapping exercise result.

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Ammonia, hydrogen, ethane and Dimethyl Ether (DME) are among the “alternative” marine fuels which may need future regulatory work.

This assessment is the result of a regulatory mapping exercise conducted by the Alternative low- and zero-carbon fuels workstream of the GreenVoyage2050 Global Industry Alliance to Support Low Carbon Shipping (Low Carbon GIA), with inputs and contributions from the International Chamber of Shipping (ICS).  

The assessment of how alternative bunker fuels and energy converters feature in key IMO Conventions and regulatory instruments aims to inform and support IMO member States and the wider maritime sector in identifying and addressing potential regulatory challenges that could be encountered when considering the use of a particular alternative marine fuel. 

The outcome of the mapping exercise can be found on the GreenVoyage2050 website in a tabular format using a traffic light colour coding system that depicts the current regulatory readiness levels categorized as Low, Medium, and High. The categorisation was agreed by members of the Alternative low- and zero-carbon fuels workstream of the Low Carbon GIA.  

Principal IMO Conventions examined included the International Convention for the Safety of Life at Sea (SOLAS), the International Convention for the Prevention of Pollution from Ships (MARPOL), the International Bulk Chemical Code (IBC Code), the International Code of Safety for Ships using Gases or other Low-flashpoint Fuels (IGF Code) and the International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code).  

Fuels and energy sources considered included the conventional fuels diesel/gas oil/fuel oil, bio/synthetic liquid diesel fuels, methanol, ethanol, dimethyl ether (DME), propane/butane (LPG), methane (LNG), ethane, ammonia and hydrogen. 

This mapping exercise has identified some areas where further regulatory work may be required by IMO, but potentially also by other standardisation and certification organisations. Some of these areas include the further development of safety guidelines for on-board use of alternative fuels, matters related to quality of alternative fuels, lifecycle GHG emissions and development of engine standards and assessing the possible impacts and risks of spills of alternative marine fuels.  

The Low Carbon GIA, which brings together leading shipowners and operators, classification societies, engine and technology builders and suppliers, big data providers, oil companies and ports,  recognizes that IMO has already initiated concrete work to address a number of these matters, whereas some others require concrete proposals to advance discussions in the different IMO bodies.  

It should be noted that the identification of a low regulatory readiness level for a particular fuel does not necessarily indicate a potential barrier for the uptake of the fuel, but simply identifies scope for future work to be done by IMO and other stakeholders as appropriate. 

Tore Longva, Lead of the Low Carbon GIA Alternative low- and zero-carbon fuels Workstream said: “Under this workstream, Low Carbon GIA members from across the industry have contributed their expertise to undertake several activities to-date to support the adoption of alternative fuels for low carbon shipping. This regulatory status assessment with respect to the use of alternative fuels represents a crucial piece of work undertaken by the Low Carbon GIA to support IMO Member States in identifying potential regulatory gaps which will need to be closed in the future.” 

In the context of the recently launched Future fuels and technology for low- and zero-carbon shipping Project (FFT Project), IMO is addressing a number of the identified regulatory gaps in support of discussions in IMO’s regulatory committees.  

The Low Carbon GIA is a public-private partnership that operates under the framework of the GreenVoyage2050 Project. The aim of the Low Carbon GIA is to develop innovative solutions to address common barriers to decarbonizing the shipping sector. 

 

Photo credit: GreenVoyage2050
Published: 13 March, 2023

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Alternative Fuels

MPA and MSC ink MoU to support adoption of alternative bunker fuels

MPA and MSC will explore new routes and services to strengthen connectivity, support the adoption of alternative marine fuels such as bio-LNG, and advance technologies to improve vessel energy efficiency.

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MPA and MSC ink MoU to support adoption of alternative bunker fuels

The Maritime and Port Authority of Singapore (MPA) on Wednesday (3 June) said it signed a Memorandum of Understanding (MoU) with MSC Mediterranean Shipping Company to strengthen collaboration in maritime decarbonisation, digitalisation, innovation, and manpower development. 

The MoU was signed on 25 May 2026 by Mr Ang Wee Keong, Chief Executive of MPA, and Mr Soren Toft, Chief Executive Officer of MSC.

The MoU underscores the shared commitment of MPA and MSC to foster a sustainable, digital, and future-ready maritime sector, while enhancing MSC’s operational and business activities in Singapore. This year also marks the 30th anniversary of MSC establishing its Asia Regional Office and local office in Singapore.

Under the MoU, MPA and MSC will explore new routes and services to strengthen connectivity, support the adoption of alternative marine fuels such as bio-LNG, and advance technologies to improve vessel energy efficiency and operational performance.

MPA and MSC will also collaborate on maritime digitalisation initiatives to improve operational efficiency, including streamlining vessel arrivals and port operations. 

On manpower development, MSC will support internship and scholarship opportunities through Singapore Maritime Foundation’s Maritime Outreach Network (MaritimeONE) platform, an industry-led tripartite partnership comprising industry, government and institutes of higher learning that aims to raise awareness of the maritime industry and attract quality talent into the maritime sector.

Mr Ang Wee Keong, Chief Executive of MPA, said: “This partnership reflects the strong collaboration between MPA and MSC in driving sustainability and digitalisation in the maritime sector. By working together on decarbonisation, operational efficiency and talent development, we aim to strengthen Maritime Singapore’s position as a trusted and future-ready global maritime hub.”

Mr Soren Toft, Chief Executive Officer of MSC, said: “Singapore is a strategically important hub for MSC and a key gateway to the broader Asia region. As we mark 30 years in Singapore, this MOU reinforces our long-term commitment to strengthening our presence here. MSC and Singapore are closely aligned on the priorities shaping the future of global shipping, and we look forward to deepening this partnership to drive the continued growth and resilience of the maritime industry.”

 

Photo credit: Maritime and Port Authority of Singapore
Published: 4 June, 2026

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Methanol

Seaspan and Hapag-Lloyd complete first of five methanol vessel retrofit

Following “Seaspan Yangtze”, the remaining vessels planned for retrofit under the methanol retrofit programme are “Seaspan Amazon”, “Seaspan Ganges”, “Seaspan Thames”, and “Seaspan Zambezi”.

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Seaspan and Hapag-Lloyd complete first of five methanol vessel retrofit

Seaspan Corporation (Seaspan) and Hapag-Lloyd on Wednesday (3 June) announced the successful completion of the first of the five vessel conversions under their methanol retrofit programme with the delivery of Seaspan Yangtze.

From the early SAVER (Seaspan Action for Vessel Energy Reduction) programme to today’s CleanBlue initiative, Seaspan has committed over USD 230 USD million across 86 vessels, executing more than 550 efficiency and retrofit projects.

Following Seaspan Yangtze, the remaining vessels planned for retrofit under the programme are Seaspan Amazon, Seaspan Ganges, Seaspan Thames, and Seaspan Zambezi. Each retrofit is expected to reduce well-to-wake CO₂e emissions by approximately 30,000 to 50,000 metric tonnes per vessel annually when operating on low-carbon methanol, while also extending vessel lifespan and enhancing fuel flexibility.

“Decarbonisation is not just about building the fleet of tomorrow, it is also about unlocking the full potential of the fleet we have today. Retrofitting and upgrades on existing fleets play a practical, immediate, and economical role in accelerating shipping’s decarbonization journey,” said Bing Chen, Chairman, President and CEO of Seaspan. 

“Project SAVER CleanBlue highlights Seaspan’s strong customer partnerships, deep technical expertise, and unique platform integrated with JV partners, such as WattSpan Maritime Technology, in executing complex and large-scale retrofit projects.”

“The successful conversion of the Seaspan Yangtze together with the planned retrofit of its four sister vessels is another important step on our ambitious path towards net-zero fleet operations by 2045,” said Silke Lehmköster, Managing Director, Fleet, Hapag-Lloyd. 

“Together with Seaspan, we are demonstrating that retrofitting existing vessels for low-carbon methanol can be a practical way to reduce emissions in shipping.”

 

Photo credit: Seaspan
Published: 4 June, 2026

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Nuclear

South Korean-led nuclear car carrier design secures LR backing

LR is working with HHI, KSOE, Hyundai Glovis, G- Marine Service and KAERI on a joint development project exploring an advanced small modular reactor (SMR) installation on a PCTC.

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South Korean-led nuclear car carrier design secures LR backing

Classification society Lloyd’s Register (LR) on Tuesday (2 June) said it has teamed up with South Korean shipbuilding, marine services and nuclear research organisations to advance the development of a nuclear‑assisted car carrier concept. 

LR is working with Hyundai Heavy Industries, Korea Shipbuilding & Offshore Engineering (KSOE), Hyundai Glovis, G- Marine Service and the Korea Atomic Energy Research Institute (KAERI) on a joint development project (JDP) exploring an advanced small modular reactor (SMR) installation on a pure car and truck carrier (PCTC). 

The study focused on how a Molten Salt Reactor (MSR) could be physically and operationally integrated into a large vehicle carrier. Work examined the internal arrangement and segregation of the reactor system, shielding requirements, and the impact on cargo deck layout and vehicle capacity, alongside stability and trim implications linked to the reactor’s weight and positioning. 

The partners also assessed propulsion system configuration and power delivery, as well as operational flexibility compared with conventionally fuelled PCTCs, where trade routes and port calls can be tightly constrained. 

A key focus of the project has been safety. LR led hazard identification (HAZID) and preliminary risk assessment work, focusing on containment, onboard safety systems and potential operability constraints tied to nuclear technology at sea. 

The partners will mark the project milestone with an Approval in Principle (AiP) granting ceremony on 2 June at the LR stand during Posidonia 2026. 

Sung-Gu Park, President – North East Asia, Lloyd’s Register, said: “While nuclear propulsion is still at an early stage of development, this project shows the importance of building technical understanding now to support future progress. 

“Establishing feasibility at concept stage is a valuable step forward, particularly in areas such as cargo optimisation, vessel stability and integrated safety design.” 

Hong-Ryeul Ryu, CTO and Senior Executive Vice President at HD HHI, said: “With global environmental regulations becoming increasingly stringent and no definitive net-zero fuel yet available, SMR-powered ships can serve as a highly effective alternative, representing a pioneering next-generation maritime technology capable of complying with GHG emission regulations while allowing lifetime operation without refuelling, and HD HHI will remain at the forefront of sustainable maritime technology development.”

 

Photo credit: Lloyd’s Register
Published: 4 June, 2026

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