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IMO Working Group progresses talks on greenhouse gas reduction from shipping

Countries expressed their willingness to continue exploring common ground in negotiations for new binding measures to cut greenhouse gas emissions from international shipping, says IMO.

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International efforts to curb greenhouse gas (GHG) emissions from shipping took a step forward as the International Maritime Organization’s (IMO) Intersessional Working Group on Reduction of GHG Emissions from Ships (ISWG-GHG 18) concluded its latest round of discussions on Friday (21 February). 

IMO said countries expressed their willingness to continue exploring common ground in negotiations for new binding measures to cut greenhouse gas emissions from international shipping.

The IMO’s 2023 GHG Reduction Strategy commits Member States to adopting mid-term measures to reduce GHG emissions from ships in late 2025, including: 

  • a technical element, namely a goal-based marine fuel standard regulating the phased reduction of a marine fuel’s GHG intensity; and  
  • an economic element, on the basis of a maritime GHG emissions pricing mechanism.  
  • The Intersessional Working Group continued discussions on proposals for these measures, using the draft text for an “IMO net-zero framework” agreed at the last meeting of the Marine Environment Protection Committee MEPC 82, as the basis. 

This draft text integrates inputs and proposals from Member States and international organizations on possible amendments to be made to the International Convention for the Prevention of Pollution from Ships (MARPOL, Annex VI). These amendments, if adopted, would incorporate the proposed mid-term measures into the treaty, which has 107 Parties representing 97% of world merchant shipping tonnage.   

The aim of this week’s discussions was to further develop and streamline the draft amendments to MARPOL Annex VI.  

Key topics covered include global marine fuel intensity regulations, the economic mechanism’s structure, organizational and operational aspects of the proposed ‘IMO Net-Zero Fund’, revenue disbursement, and potential food security impacts.

The Working Group agreed to keep all proposals for an economic element (GHG emissions pricing mechanism) under consideration and acknowledged potential “bridging options” suggested by some Member States. Efforts will continue toward defining amendments to MARPOL Annex VI that could achieve consensus approval at the next session of the Marine Environment Protection Committee (MEPC 83) on 7-11 April 2025.

Delegations reaffirmed their commitment to continue exploring possible ways to converge their positions and find common ground.

After reviewing the draft IMO net-zero framework, the Chair, in consultation with the Secretariat, prepared an updated version of the proposed MARPOL Annex VI amendments. This version consolidates areas of agreement and introduces new possible bridging options for further discussion. It will be annexed to the Group’s report to MEPC 83 as a “work-in-progress”, without preempting future changes, and will be further considered at the 19th meeting of the Intersessional Working Group (1-4 April 2025), ahead of MEPC 83.

 

Photo credit: International Maritime Organization
Published: 25 February, 2025

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Biofuel

BHP and GCMD trial multi-feedstock B100 bio bunker fuel on bulk carrier

Bio-blend in the BHP and GCMD pilot is being used on a BHP-chartered bulk carrier “Berge Lyngor”, which was bunkered in Singapore in early May.

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BHP and GCMD trial multi-feedstock B100 bio bunker fuel on bulk carrier

BHP and the Global Centre for Maritime Decarbonisation (GCMD) on Wednesday (3 June) said they have blended biofuels from two distinct feedstocks—used cooking oil and waste animal fats —and introduced the lower-emissions marine fuel into a BHP-chartered bulk carrier as part of a pilot project.

The bio-blend in the BHP and GCMD pilot is being used on a BHP-chartered bulk carrier Berge Lyngor, owned and operated by Berge Bulk, transporting BHP iron ore from Western Australia to China. When run on bio-blend, the vessel has the potential to reduce well-to-wake greenhouse gas emissions by approximately 79 per cent per voyage compared to sailing on very low sulphur fuel oil (VLSFO).

The vessel bunkered in Singapore in early May with a B100 bio-blend comprising 50 percent tallow-derived biodiesel, sourced and supplied by HAMR Energy, and 50 per cent used cooking oil (UCOME) supplied by Mitsui & Co Energy Trading Singapore (METS).

Mitsui also blended the fuel and Dan-Bunkering coordinated and executed the bunkering operation, which was performed by Global Energy’s barge MT Maple.

The BHP and GCMD pilot will assess how biofuels from multiple feedstocks can be blended, handled, and introduced under real-world operating conditions using existing used cooking oil bunkering infrastructure.

At the same time, insights from this pilot will help identify solutions to challenges related to fuel quality, handling, traceability, and onboard vessel performance.

Biofuels for global shipping today rely heavily on used cooking oil – a feedstock whose availability is approaching its projected limits. Biofuel from waste animal fats presents a promising option to expand the supply of lower-emissions marine fuels.

The outcomes of the pilot are expected to shed light on the practical steps to integrate biofuel blends from different feedstocks into existing supply chains. The diversity of biofuels will provide shipowners and operators with greater flexibility to optimise fuel procurement based on cost, availability, and lifecycle emissions performance.

Biofuels derived from different feedstocks can exhibit varying properties that may impact operations, including potential corrosion from oxidation, fuel system clogging caused by wax formation, which this pilot aims to assess.

The pilot will trace and verify the biofuel blend’s integrity aimed at bolstering confidence in emissions reductions reporting. The pilot will also provide insights into how robust tracing can support future marine fuel supply chains where biofuels from multiple feedstocks with varying lifecycle greenhouse gas emissions footprints are blended together.

This project is co-funded by the Maritime and Port Authority of Singapore under the Maritime Innovation and Technology Fund (MINT).

 

Photo credit: Global Centre for Maritime Decarbonisation
Published: 3 June, 2026

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Biofuel

NYK starts one-year B100 bio bunker fuel trial on car carrier

In this trial, NYK will operate a car carrier continuously on B100 for one year to evaluate the impact on engines, fuel supply systems, and operational practices.

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NYK starts one-year B100 bio bunker fuel trial on car carrier

Japanese shipping firm NYK on Tuesday (2 June) said it has commenced a one-year long-term trial involving the continuous use of 100% biofuel (B100) on an NYK-operated car carrier. 

In this trial, NYK will operate a car carrier continuously on B100 for one year to evaluate the impact on engines, fuel supply systems, and operational practices. High-purity biofuels such as B100 are known to be susceptible to degradation from oxygen, light, and heat, raising concerns about the stability of such fuels during long-term use.

In this trial, the biofuel primarily comprises FAME (Fatty Acid Methyl Ester) derived from used cooking oil and similar feedstocks.

The initiative is designed to evaluate the fuel’s effects on the vessel’s equipment and verify operational safety under real-world conditions. 

Through this effort, NYK seeks to accumulate technical expertise that will support the broader use of high-purity biofuels and further accelerate efforts to reduce greenhouse gas (GHG) emissions.

NYK has been advancing the use of biofuels through various initiatives. In 2024, the company conducted a trial using biofuel blend B24 and subsequently expanded practical usage to B30. However, the company said there remains limited global experience with the long-term continuous use of B100.

“By collecting long-term operational data through this trial, NYK aims to accumulate valuable technical insights to support both the safe operation of vessels and the wider adoption of high-purity biofuels,” it said. 

 

Photo credit: NYK
Published: 3 June, 2026

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Ammonia

AM Green plans to build green ammonia plant at Indian port

Initiative also includes development of green ammonia handling, storage and bunkering infrastructure, pilot bunkering operations, safety procedures and training programmes, says VOC Port Authority.

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VO Chidambaranar (VOC) Port Authority on Friday (29 May) said it has signed a Memorandum of Understanding (MoU) with India’s ammonia producer AM Green Ammonia to collaborate in the development of a green ammonia production plant.

The plant will have a capacity of one million tonnes per annum (MTPA) at Tuticorin.

The initiative also includes development of green ammonia handling, storage and bunkering infrastructure, pilot bunkering operations, safety procedures and training programmes. 

The project is expected to support the development of green fuel corridors connecting VOC Port with major ports in Europe and Asia, thereby strengthening India’s position in the global green fuels value chain.

VOC Port also signed a Memorandum of Understanding (MoU) with Bureau Veritas (India) Pvt. Ltd., to collaborate on Green Port certification, emissions accounting, ESG reporting, safety validation, development of green bunkering practices, and establishment of a Centre of Excellence for green fuels and sustainability.

The port also plans for an upcoming 750 m³ green methanol bunkering facility.

 

Photo credit: Naveed Ahmed on Unsplash
Published: 3 June, 2026

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