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GCMD life cycle study quantifies net GHG emissions savings for pathways with OCCS

GCMD highlights comprehensive life cycle assessment quantifying GHG emissions and costs associated with onboard carbon capture and storage across the entire carbon value chain in COLOSSUS study.

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GCMD life cycle study quantifies net GHG emissions savings for pathways with OCCS

The Global Centre for Maritime Decarbonisation (GCMD) on Tuesday (6 May) released its latest report on a comprehensive life cycle assessment (LCA) quantifying Carbon Capture and Storage’s (OCCS) potential to provide GHG emissions savings.

The study, named COLOSSUS (Carbon capture, offloading, onshore storage, utilisation and permanent storage), provides an in-depth analysis of GHG emissions and costs associated with OCCS across the entire carbon value chain, accounting for emissions from fuel production, transport and use, to CO2 capture onboard the vessel and its final disposition.

GCMD said LCAs facilitate an equivalent comparison of different decarbonisation measures; this comparison can help shipowners make informed decisions on solutions adoption based on their net abatement impact across the entire carbon value chain. This holistic quantification of emissions ensures that OCCS adoption does not lead to inadvertent increases in emissions in adjacent sectors because of decisions made downstream.

“While LCAs are available for onshore carbon capture technologies in themselves, assessments of the overall GHG emissions from deploying these solutions onboard vessels across the associated value chains are limited,” it added.

A full assessment would require the inclusion of the well-to- tank (WtT) emissions of the fuel, onboard tank-to-wake (TtW) emissions, including those associated with OCCS operations, the subsequent emissions from transporting captured CO2, and those associated with permanent storage or its utilisation.

What this study considers

The study used a WtW GHG emissions of 93.3 gCO2eq/MJ for Heavy Fuel Oil (HFO) as a baseline for comparison against other scenarios. This study explored five OCCS technologies, with six marine fuel options, and three post-capture scenarios. Among OCCS technologies, the study examined different post-capture scenarios with conventional monoethanolamine (MEA)- based OCCS, with it being the most mature of the OCCS technologies in the industry. Based on the practical limitations of storing large quantities of liquid CO2 onboard vessels, the study further assumed a 40% gross carbon capture for all scenarios explored, consistent with industry recommendations.

Key findings

Notably, the deployment of conventional MEA-based OCCS can result in a WtW GHG emissions savings of 29% for an HFO-fuelled ship.

Replacing HFO with biofuels presents a promising strategy for maximising GHG emissions savings. The WtW emissions savings for a vessel deploying MEA-based OCCS range from 69% to 121% when using bio-LNG and biodiesel from used cooking oil, respectively.

Among the post-capture scenarios evaluated, fixing the captured CO2 in concrete is most effective. This approach can increase GHG emissions savings from 29% to 60% across the carbon value chain by partially displacing the need for carbon-intensive cement in applications Ashore.

Post-capture transport and permanent storage of CO2 add minimal emissions, approximately 1% to the WtW emissions of a vessel deploying MEA-based OCCS when the captured CO2 is transported 1,000 km.

Captured CO2 can also be used to produce e-methanol with renewable electricity, allowing the vessel that consumes this e-methanol to claim a 17% GHG emissions savings.

The cost of avoided carbon for OCCS with permanent storage is between USD 269-405/tCO2 for a 40% gross capture on an MR tanker, considering a full-scale, Nth-of-a-kind installation of an OCCS system with full heat recovery.

Note: The full statement by GCMD can be found here while the full study findings can be found here.

 

Photo credit: Global Centre for Maritime Decarbonisation
Published: 6 May, 2025

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Wind-assisted

Anemoi, Hafnia, Guangzhou Shipyard and DNV to design rotor sails for MR tankers

Companies agreed to develop a new generation of efficient and environmentally friendly Rotor Sail vessel designs to increase efficiency of MR tankers within the wider global fleet.

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Anemoi, Hafnia, Guangzhou Shipyard and DNV to design rotor sails for MR tankers

Anemoi Marine Technologies on Thursday (15 May) announced a new partnership with Hafnia, Guangzhou Shipyard International (GSI), and DNV to develop the integration design of Rotor Sails suitable for installation on 50,000 dwt Medium-Range (MR) tanker vessels.

The companies signed a Joint Development Project (JDP) in April 2025 to develop a new generation of efficient and environmentally friendly Rotor Sail vessel designs to increase the efficiency of MR tankers within the wider global fleet.

As part of the project, Anemoi and Hafnia will undertake several engineering studies to establish specifications related to how Rotor Sails can be safely and efficiently installed on the deck of MR tankers, alongside additional electrical and control system layouts for these vessels. 

In addition, the studies will include calculations to examine how Rotor Sails can improve the Energy Efficiency Design Index (EEDI) and Energy Efficiency Existing Ship Index (EEXI) values of existing and future MR tankers.

GSI will apply its naval architecture and marine engineering principles to develop essential technical documentation for the new Rotor Sail’s design integration, while DNV will undertake an Approval in Principle (AiP) assessment to ensure that the design is feasible and verifies that no significant obstacles exist to prevent the design from being realized based on current and foreseeable regulatory and class requirements.

Nick Contopoulos, Chief Production and Partnerships Officer of Anemoi, said: “There is growing interest within the tanker sector for novel technology that can help reduce the carbon footprint of their vessels and increase their value, particularly as the MR tanker fleet is expected to grow in the coming years.”

“Our partnership with Hafnia, alongside GSI and DNV, will ensure a new generation of MR tankers that utilises Rotor Sails to improve their efficiency and sustainability credentials hits the water in the not-too-distant future.”

Mr Shao Guang Chi, Station Manager of Guangzhou Station at DNV Maritime, said: “WAPS, like Rotor Sails, are spreading throughout the industry, enabled by new materials, data and software, and evolving rules and regulations.”

“Across all segments, we still have room to improve vessel energy efficiency and WAPS have emerged as one of the most attractive tools for shipping to make immediate, impactful gains in this area.”

 

Photo credit: Anemoi Marine Technologies
Published: 19 May, 2025

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Emissions reporting

ZeroNorth and Veracity by DNV launch end-to-end emissions reporting, verification service

New offering combines ZeroNorth’s Vessel Reporting and Emissions Analytics platform with Veracity platform and DNV’s Emissions Connect verification services to deliver an end-to-end compliance solution.

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ZeroNorth and Veracity by DNV launch end-to-end emissions reporting, verification service

Maritime technology solutions provider ZeroNorth on Friday (16 May) said it has partnered with Veracity by DNV to launch a fully integrated emissions reporting and verification service for the maritime industry. 

Teekay is the first customer that will be implementing the service across its fleet, following successful testing and development.

As regulatory requirements tighten, ZeroNorth said maritime operators face growing demands for emissions transparency and reporting integrity. At the same time, poor data quality remains an industry-wide challenge. 

“The new offering combines ZeroNorth’s Vessel Reporting and Emissions Analytics platform with the Veracity platform and DNV’s Emissions Connect verification services to deliver an end-to-end compliance solution,” the company said in a statement. 

“The offering simplifies compliance by integrating automated data reporting with expert validation, reducing administrative burdens and improving data reliability.”

A key differentiator is the multi-layered data quality feedback loop, which ensures emissions data undergoes rigorous validation at multiple stages. Verification warnings from Veracity by DNV are automatically flagged to ZeroNorth’s data quality team, which then works directly with vessel crews to resolve discrepancies before final submission to authorities. 

This reduces compliance risks and enhances regulatory confidence while supporting continuous monitoring of EU MRV, IMO DCS, CII ratings, EU ETS and FuelEU Maritime compliance.

Teekay, a long-standing customer of ZeroNorth, participated in early testing of the solution and providing operational feedback. Since its successful implementation with Teekay, the service has been rolled out to two additional customers, and further deployments are underway.

Anders Schulze, Chief Operations Officer at ZeroNorth, said: “The maritime industry faces growing pressure to ensure emissions data is not just reported, but verified to the highest standards. Yet fragmented systems and manual processes continue to undermine data quality and increase compliance risk. 

“By combining ZeroNorth’s data and analytics capabilities with Veracity by DNV’s verification expertise, we are directly addressing this challenge. Our goal is to build trust in emissions data and reduce complexity for shipowners and charterers. We’re especially pleased that Teekay, a long-time partner, played a central role in shaping and validating the service.”

Mikkel Skou, Managing Director at Veracity by DNV, said: “At Veracity by DNV, the value of our ecosystem is built on strong partnerships, exemplified by our collaboration with ZeroNorth.

“By integrating trusted data and solutions like ZeroNorth’s Vessel Reporting and Emissions Analytics platform, we create a robust network that supports collaboration and drives sustainable growth in the maritime industry. 

“We look forward to continuing working towards our ambition to deliver trust and connectivity to the industry through this partnership with ZeroNorth.”

Mikkel Seidelin, Chief Commercial Officer at Teekay, said: “Partnering with ZeroNorth improves our ability to navigate complexities seamlessly, leveraging on data and technology to optimise our performance and reduce inefficiencies.

“When we are equipped with verified, end-to-end data, it empowers us as owners towards seamless decision-making, resulting in real sustainable and operational target-achievements.”

 

Photo credit: ZeroNorth
Published: 16 May, 2025

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Events

Green Shiptech China Congress to explore alternative bunker fuels and ship technologies

LNG, methanol and ammonia as well as fuel cell integration will be among key issues discussed at the annual conference which will be held on 25 to 26 September in Shanghai.

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1000×600 GSCC2025 Logo

Ridge China on Wednesday (14 May) announced it will be hosting the 14th Green Shiptech China Congress (GSCC), an annual conference which will be held on 25 to 26 September in Shanghai. 

More than 4,400 experts and decision makers from governments, classification societies, shipowners, shipyards, research institutes, technology/equipment suppliers and consulting companies attended the previous GSCC from 2012 to 2024. 

For 2025, over 400 industry experts, corporate decision makers and government officials will be engaged in comprehensive discussions on current issues of IMO, EU, USCG, China MSA’s policies and regulations, designs and standards for new ship models, innovative and sustainable green ship technologies at this annual conference.

Alternative bunker fuels such as LNG, methanol and ammonia as well as fuel cell integration will be part of the important issues discussed at the event. 

Speakers will be from

  • IMO
  • European Commission
  • U.S. Coast Guard
  • China MSA
  • Financial Institutions
  • Maritime Research Institutes
  • Solution & Technology Providers
  • Shipowners
  • Shipyards
  • Classification Societies

Key topics

  • Policies and Regulations Update and Interpretate by IMO, European Commission, U.S. Coast Guard and China MSA
  • Retrofitting Vessels to Achieve Decarbonization Goals
  • Energy Efficiency Continues to Be Key for Decarbonization
  • Decarbonization Through Digitalization
  • Digital Technologies As a Key Enabler for Emissions Reduction
  • Impact of a Hull Coating Upgrade on Hull Efficiency
  • LNG As Marine Fuel: Pivoting Towards Cleaner Shipping
  • Methanol As a Marine Fuel
  • Ammonia’s Credentials As a Green Fuel
  • Wind Propulsion Technology
  • Fuel Cell Integration: Upcoming Challenges and Opportunity
  • Propelling Carbon-neutral Shipping with Green Engines and Alternative Fuels
  • Next-generation Electric and Hybrid Marine Propulsion Technologies and Components
  • Latest Developments in Energy Storage Systems

Interested parties may contact:

Mr. Quin Xu
Tel: +86 21 6607 8610 -8003
Mob: +86 13564222811
Email: [email protected] 

Note: The English and Chinese version of the event website can be found here and here respectively while the event registration can be found here

 

Photo credit: Ridge China
Published: 15 May, 2025

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