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Engine

Wärtsilä introduces new ultra-low emissions version of Wärtsilä 31DF engine

New technology can reduce methane emissions by 41% more than the standard Wärtsilä 31DF engine, which has already the lowest emission levels on the market.

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Wartsila ultra low emissions 31DF engine Wasaline

Technology group Wärtsilä on Wednesday (1 November) introduced a new ultra-low emissions version of its Wärtsilä 31DF engine. Whilst operating on liquefied natural gas (LNG), this new version can further reduce methane emissions on a 50% load point by up to 56 percent and nitrogen oxide (NOx) by up to 86%.

On a weighted average, this new technology can reduce methane emissions by 41% more than the standard Wärtsilä 31DF engine, which has already the lowest emission levels on the market.

The new version, which is applied on one of the four engines on board Wasaline’s Aurora Botnia ferry, has already helped the Finnish-Swedish ferry operator further reduce the vessel’s methane emissions by 10%.

“We are very committed to decarbonisation, and we have worked closely with Wärtsilä to make sustainable shipping a reality,” commented Peter Ståhlberg, Managing Director of Wasaline.

“It is a goal-oriented partnership that benefits both companies, as well as the industry as a whole. We have been pleased to allow the Aurora Botnia to be utilised as a floating laboratory, and we are excited to see the success of this latest Wärtsilä technology breakthrough.”

Launched in 2015, the Wärtsilä 31DF engine platform is widely recognised for its exceptional fuel economy, high performance, and minimal GHG impact. The engine, as a standard version, already meets today’s regulatory requirements. The new version will enable operators to go even further in reducing methane emissions, helping to futureproof their vessels in the longer term against potentially tightening global requirements. What’s more, improving dual fuel technology to enable methane emissions reduction will have a major impact on the long-term viability of LNG as a marine fuel.

“Our work around reducing methane slip and GHG emissions is part of Wärtsilä’s effort to continuously improve efficiency and reduce emissions of our products, and this new innovation is one more very important step along the road to decarbonisation,” commented Stefan Nysjö, Vice President of Power Supply, Wärtsilä Marine Power.

Nysjö continued: “The building of an LNG fuel infrastructure has been an important factor in shipping’s transition towards cleaner operations, and Wärtsilä continues to create solutions that support this journey. Our focus has always been to improve and optimise existing solutions, and to develop exciting new ones. With this latest introduction, we are clearly delivering on this commitment.”

Although methane slip from engines is a relatively small amount, from a percentage standpoint, it is significantly more potent than CO2 – up to 28 times greater. Across the shipping industry, cutting methane emissions is one of the most effective ways to decrease overall GHG emissions from engines over the next 10 years, complementing other efforts to reduce CO2 emissions.

Photo credit: Wärtsilä
Published: 6 November 2023

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Events

London forum to address critical bottlenecks holding back maritime decarbonisation

Marine Energy Transition Forum 2026 will be held on 11 November to address bunker fuel, technology and infrastructure barriers that continue to slow the industry’s transition to net-zero emissions.

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London forum to address critical bottlenecks holding back maritime decarbonisation

The Marine Energy Transition Forum (METF) 2026 will bring together leading voices from across the global maritime sector on 11 November 2026 at Norton Rose Fulbright, London.

The forum will tackle one of shipping’s most pressing challenges: how to overcome the fuel, technology and infrastructure barriers that continue to slow the industry’s transition to net-zero emissions.

Under the theme “Reframing the maritime decarbonisation roadmap: addressing fuel, technology and infrastructure bottlenecks,” the one-day forum will provide a platform for shipowners, fuel suppliers, technology developers, ports, policymakers and financiers to examine the practical steps needed to accelerate progress while maintaining commercial competitiveness.

As the maritime industry navigates an increasingly complex regulatory and commercial landscape, METF 2026 will focus on delivering practical insight into the challenges—and opportunities—shaping the next phase of the energy transition.

The conference programme will explore five key themes:

  • The effectiveness of current regulatory frameworks and policy measures, including regional and international initiatives driving maritime decarbonisation.
  • Progress in developing a resilient multi-fuel future, examining investment, fuel availability, supply chains and infrastructure.
  • The commercial readiness of emerging technologies, including alternative propulsion systems, vessel optimisation, batteries, carbon capture, wind propulsion and digital solutions.
  • Building a supportive business environment for energy transition companies, with discussions covering finance, innovation, scaling businesses and market development.
  • The evolving role of ports as critical enablers of shipping’s energy transition through new fuel infrastructure, shore power and energy cluster development.

METF 2026 is designed to encourage open discussion between every part of the maritime value chain, recognising that collaboration across fuel producers, shipowners, ports, technology providers, investors and policymakers will be essential if global decarbonisation ambitions are to be achieved.

The event will feature expert speakers, panel discussions and extensive networking opportunities, enabling delegates to exchange ideas, develop partnerships and gain practical insight into the strategies shaping the future of maritime energy.

Registration for METF 2026 is now open. Further information and registration can be found here

 

Photo credit: ship.energy
Published: 13 August, 2026

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Engine

Japan’s first WinGD methanol dual-fuel marine engine passes FAT at MITSUI E&S

Company successfully completed the Factory Acceptance Test of the DU-WinGD 6X82DF-M-1.0 LP-SCR, the first methanol dual-fuel WinGD large marine engine built in Japan.

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MITSUI E&S completes FAT of Japan's first WinGD methanol dual-fuel engine

MITSUI E&S on Monday (3 August) announced that Mitsui E&S DU, a group company of MITSUI E&S, has successfully completed the Factory Acceptance Test (FAT) of the DU-WinGD 6X82DF-M-1.0 LP-SCR, the first methanol dual-fuel WinGD large marine engine built in Japan.

The engine is also the first WinGD large marine engine manufactured at MITSUI E&S Tamano Works.

“The engine is scheduled to be installed on the first vessel in a series of four vessels being built for a domestic shipowner,” the company said on its website. 

By utilising green methanol as fuel, it will contribute to a substantial reduction in greenhouse gas (GHG) emissions from shipping operations.

“To meet the expected increase in marine engine demand under the Japanese government’s Shipbuilding Industry Revitalisation Roadmap, the MITSUI E&S Group is working to enhance production efficiency for large marine engines through integrated operation at MITSUI E&S Tamano and Mitsui E&S DU Aioi,” the company added.

 

Photo credit: MITSUI E&S
Published: 4 August, 2026

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Methanol

Tsuneishi Solutions Tokyobay delivers first methanol fuel supply system for bulker

The LFSS is the first unit of T-SOL’s proprietary LFSS developed in-house and will be installed on a Kamsarmax bulk carrier, marking its first application on an actual vessel following a ClassNK AiP.

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Tsuneishi Solutions Tokyobay delivers first methanol fuel supply system for bulker

Tsuneishi Solutions Tokyobay (T-SOL) on Friday (24 July) said it delivered the first Low-flashpoint Fuel (MeOH) Supply System (LFSS) for medium- and low-speed diesel engines at the end of May 2026. 

The LFSS received Approval in Principle (AiP) from ClassNK in April 2024. It is the first unit of T-SOL’s proprietary LFSS developed in-house and will be installed on a Kamsarmax bulk carrier, marking its first application on an actual vessel following the AiP granted by ClassNK.

An LFSS is designed to safely and reliably supply alternative fuels with low flashpoints, such as methanol, to a vessel’s main engine.

The LFSS delivered by T-SOL has been developed specifically for medium- and low-speed diesel engines and features a simple and compact design in terms of its main components, dimensions and weight. The system is equipped with key components manufactured by Japanese suppliers, enabling the provision of instruction manuals in Japanese as well as prompt and flexible responses to customer enquiries.

As the LFSS is assembled in Japan, customers adopting T-SOL’s LFSS are not required to attend Factory Acceptance Tests (FAT) overseas or arrange for engineers from overseas equipment manufacturers to travel to Japan, thereby helping reduce both costs and operational burdens for customers. T-SOL also provides on-site technical support during commissioning and testing.

With the tightening and introduction of environmental regulations, marine fuels are entering a period of transition from heavy fuel oil to alternative fuels, including methanol. 

“The transition requires new expertise and considerable time for technical evaluation, increasing the burden on customers. Drawing on the expertise of its experienced engineers, T-SOL provides comprehensive support throughout each customer’s transition to alternative fuels,” the company said. 

Following the delivery of its first LFSS, T-SOL will continue to work to ensure a stable supply of LFSS units while advancing the research and development of technologies that contribute to greenhouse gas (GHG) emissions reduction, including engineering solutions for other alternative fuels. 

 

Photo credit: Tsuneishi Solutions Tokyobay
Published: 27 July, 2026

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