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MAN ES announces MAN 175D methanol dual-fuel engine will be available by 2026

Dual-fuel version of MAN 175D high-speed engine, capable of operating on methanol, will be available by the end of 2026; will be available both as newbuild and retrofit variants.




MAN ES announces MAN 175D methanol dual-fuel engine will be available by 2026

MAN Energy Solutions on Monday (27 November) announced that a dual-fuel version of its MAN 175D high-speed engine, capable of operating on methanol, will be available by the end of 2026. 

The new variant, designated MAN 175DF-M, will be available both as newbuild and retrofit variants.

MAN Energy Solutions states that the 175DF-M will be optimised for diesel-mechanical and diesel-electric propulsion to achieve the largest methanol share and best efficiency for various applications and load profiles. In fact, the engine has already been awarded the ‘fuel ready’ certificate by DNV, guaranteeing the introduction of this dual-fuel methanol technology.

“The 175D engine is MAN Energy Solutions’ latest addition to the high-speed maritime sector and is, as such, one of the pillars of its efforts to develop a methanol-ready engine portfolio as the demand for such technology has rapidly been increasing of late,” the firm said in a statement.

With its success in achieving series-approval for its two-stroke engines, MAN Energy Solutions said it has used this experience to develop an optimised solution for its four-stroke engines, including successful single-cylinder testing. As such, the results of these efforts will fuel the upcoming development and validation of the dual-fuel PFI (Port Fuel Injection) technology for its methanol-ready 175D engine.

Florian Keiler, Head of High Speed, MAN Energy Solutions, said: “The MAN 175D has proven to be very competitive in terms of sustainability and efficiency with the lowest fuel consumption, lowest lube-oil consumption and longest overhaul times in its class, minimising its environmental footprint. In terms of future fuels, the next logical step, apart from being able to run on 100% bio-fuels, is to ensure methanol combustion.”

“Based on numerous exchanges with customers, we came to the conclusion that the dual-fuel principle, reliability, efficiency, a high methanol share, competitive life-cycle costs and maximum achievable output were key requirements for the 175DF-M’s development. Therefore, after conscientious investigation and consideration, we settled upon the PFI combustion technology as the most favourable. Fundamental combustion development will start in 2024, leading up to a first field-test of the methanol engine in 2026. The MAN 175DF-M engine will subsequently be ready for sales release at the end of 2026.”

MAN Energy Solutions believes that PFI is the most advanced technology currently available. Its development targets a highest methanol share over a wide power range while achieving the highest cylinder output in its high-speed engine class. In particular, optimisation for diesel-electric multi-engine plants will allow operation of the engines at an optimal load point achieving the highest methanol share. As result, when using biofuels, the MAN 175DF-M’s carbon footprint will be reduced to zero while retaining full fuel-flexibility for operation anywhere in the world.

Photo credit: MAN Energy Solutions
Published: 28 November, 2023

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Alternative Fuels

ExxonMobil advanced 40BN cylinder oil gets WinGD dual fuel engine validation

ExxonMobil announced its advanced 40BN cylinder oil, Mobilgard™ 540 AC, has been validated by WinGD for use in its dual fuel engines with bunker fuels including methanol and now LNG.





RESIZED ExxonMobil

ExxonMobil on Friday (7 June) said its advanced 40BN cylinder oil, Mobilgard™ 540 AC, has been validated by WinGD for use in its dual fuel marine engines with conventional fuels, including methanol, and now LNG. 

The high performance cylinder oil, which also has an approval from MAN ES for use in its two-stroke engines, was developed for use in slow-speed, two-stroke marine engines operating on fuels with up to 0.50% sulphur content, LNG, ethane, methanol and LPG.

Mobilgard 540 AC has demonstrated an excellent ability to keep the engine clean while running in gas mode at optimised low feed rates. The oil is also suitable for methanol operation and with other liquid fuels up to 1.5% sulphur levels. 

This comes in addition to the existing MAN ES Category II approval, positioning the oil as a supreme oil in the two stroke marine engine space.

“Vessel operators need reliable, high performance solutions, now more than ever,” explained Yannis Chatzakis, Global Technology Program Manager at ExxonMobil. 

“This double validation underscores ExxonMobil’s commitment to delivering both. As with all our cylinder oils, Mobilgard 540 AC has been developed using our balanced formulation approach. This helps ensure outstanding protection at optimum feed rates, supporting the peace of mind our customers need.”

Used in conjunction with a next generation scrape-down oil analysis service, such as Mobil℠ Cylinder Condition Monitoring, the cylinder oil can help:

  • Deliver exceptional cleanliness with low-sulphur fuel due to high level of detergenc
  • Combat deposits and scuffing-related engine wear associated with low-sulphur fuels
  • Ensure performance even in severe operating conditions as a result of excellent thermal and oxidative stability

The firm added Mobilgard 540 AC has demonstrated the ability to deliver these benefits while optimising cylinder oil feed-rates and effectively managing acid neutralisation in a range of engines and fuel applications. 

The cylinder oil has already been granted Category II status by MAN ES for use in its two stroke marine diesel engines; the addition of the dual fuel validation from WinGD positions the oil as one of the highest performing in the market.

“ExxonMobil continues to work with stakeholders, including engine OEMs, from across the marine industry as we believe that this offers the best results for our customers and the wider maritime sector,” said Chatzakis.

“The next few years are likely to throw up new challenges as we collectively pursue a lower emissions future. Our commitment to innovation will help achieve that goal.”

Note: Mobilgard 540 AC is available in all major ports. Full details can be found in its Ports & Services Guide -


Photo credit: ExxonMobil
Published: 10 June, 2024

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WinGD, Alfa Laval, ABS and K Shipbuilding to develop ammonia-fuelled tanker design

WinGD will work with KSB to deliver fuel gas system specifications suitable for vessel application and WINGD engine, while Alfa Laval will deliver detailed documentation for final fuel gas system design.





WinGD, Alfa Laval, ABS and K Shipbuilding to develop ammonia-fuelled tanker design

Swiss marine power company WinGD on Thursday (6 June) said it will work together with Swedish marine technology leader Alfa Laval and the American Bureau of Shipping (ABS) and Korean shipbuilder K Shipbuilding (KSB) on the development of an ammonia-fuelled MR tanker design, under a memorandum of understanding signed in April, which will feature a 6X52DF‑A engine from WinGD.

WinGD will work with KSB to deliver fuel gas system specifications suitable for the vessel application and the selected engine, while Alfa Laval will deliver the detailed documentation for the final fuel gas system design. The design will be reviewed by ABS, with the aim of issuing an approval in principle.

WinGD Vice President R&D, Sebastian Hensel, said: “After early orders for bulk carriers and ammonia carriers, it is encouraging to see that ammonia-fuelled tanker projects are picking up momentum.”

“And even more encouraging that our X‑DF‑A engines are at the heart of many of these projects. Developing full vessel designs that shipowners can adopt easily will only accelerate the transition and we are pleased to be part of the collaboration with KSB in delivering this design.”

Head of Marine Separation & Fuel Supply Systems, Viktor Friberg, Alfa Laval, said: “This MOU signifies a powerful step forward to make ammonia a viable marine fuel. Our proven expertise in handling diverse fuel types, especially methanol and LPG, will be instrumental in designing the new fuel supply system for ammonia.”

“We believe that partnerships are key for the maritime industry to achieve the ambitious decarbonisation targets and support the fuel transition. By working alongside WinGD, ABS and K Shipbuilding, we accelerate this transition and make it safer.”

The X52DF‑A engine is the smallest bore size available in WinGD’s ammonia-fuelled X‑DF‑A series, and the first to be developed. It is expected to have wide application across bulk carriers, tankers and ammonia carriers, and has already been ordered for two ammonia carriers to be delivered in early 2026. 

The X52DF‑A is also the engine design on which four class societies to date, including ABS, have issued approvals in principle for the X‑DF‑A series, assuring shipowners that the engine can be deployed in operation safely.

JDPs and other cooperations have been a cornerstone of WinGD’s ammonia engine developments, with several industry partnerships focused on vessel designs and crew training – supporting both the deployment of ammonia-fuelled engines and the preparedness of the maritime industry to operate them safely


Photo credit: WinGD
Published: 10 June, 2024

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Methanol Institute: Driving innovation and sustainability in maritime fuel (Week 21, 20-26 May 2024)

Industry leaders advance methanol adoption through new vessel technologies, strategic partnerships, and groundbreaking research, promoting sustainable maritime practices.





RESIZED Methanol Institute logo

The Methanol Institute, provides an exclusive weekly commentary on developments related to the adoption of methanol as a bunker fuel, including significant related events recorded during the week, for the readers of bunkering publication Manifold Times:

As orders continue to be placed for methanol dual fuel ships, more new tonnage is hitting the water to support efforts by vessel operators to reduce their carbon emissions and promote sustainable shipping practices. Behind the scenes, work continues on the technology that will drive broader take up of methanol as fuel, with engine platforms and fuel supply systems as well as new methods of e-methanol production. 

Methanol marine fuel related developments for Week 21 of 2024:

Singapore's X-Press Feeders Receives Methanol Dual-Fuel Vessel

Date: May 20, 2024

Key Points: Singapore-based X-Press Feeders has received its first dual-fuel vessel built by Yangzijiang Shipbuilding Holdings. This vessel, capable of running on green methanol, marks a significant advance in sustainable shipping for the company. Departing from Shanghai to Rotterdam via Singapore, it will be part of Europe’s first feeder containership network powered by green methanol starting in Q3 2024. X-Press Feeders has 14 more dual-fuel vessels on order, set for delivery from 2024 to mid-2026, enhancing their fleet's capacity and sustainability efforts.

Headway and DMD Achieve Key Milestones for China's First Methanol Dual-Fuel Marine Engine

Date: May 27, 2024

Key Points: Dalian Marine Diesel (DMD) has achieved significant milestones in the development of China's first methanol dual-fuel marine main engine, completing tests on a methanol dual-fuel platform. The methanol fuel supply system, developed by Headway Technology Group, passed performance and safety tests. This marks a pivotal step in China's marine power equipment sector and highlights Headway's role in advancing low-carbon shipping solutions. Headway plans to continue collaborating with DMD and global partners to provide efficient alternative energy options for ships, promoting decarbonization and sustainable development in the shipping industry. 

Alfa Laval Methanol Fuel Supply System Surpasses 100 Orders

Date: May 23, 2024

Key Points: Alfa Laval has surpassed 100 orders for its FCM Methanol low-flashpoint fuel supply system (LFSS), reflecting the growing adoption of methanol as a marine fuel. This milestone aligns with the increased newbuilding orders for methanol-capable vessels, which now total over 250 globally. Introduced in 2015, the success of FCM Methanol is attributed to partnerships with engine designers, shipyards, and shipowners. Alfa Laval continues to develop fuel treatment solutions to support the maritime industry's climate targets.

Ahti Pool: Alternative Fuels to Overtake Traditional Bunkers by 2040

Date: May 22, 2024

Key Points: Ahti CEO Risto Kariranta predicts that alternative fuels will surpass traditional bunkers by 2040, driven by FuelEU Maritime's incentives for low-carbon fuels. Methanol, as one of these alternatives, is expected to play a significant role due to its lower carbon intensity. Companies like AP Moller-Maersk, COSCO, Wallenius Wilhelmsen and Svitzer are investing in methanol-capable vessels, contributing to the shift towards alternative fuels. The study finds that one vessel operating in e-methanol using the pooling mechanism of FuelEU Maritime can make 75 HFO-fuelled vessels compliant. 

MHI and NGK Collaborate to Develop Membrane Dehydration Systems for Cost-Effective E-Methanol Production

Date: May 24, 2024

Key Points: Mitsubishi Heavy Industries (MHI) and NGK Insulators have announced a collaboration to develop membrane dehydration systems aimed at reducing the production costs of e-methanol. This initiative is part of a broader effort to optimize the efficiency of manufacturing processes for e-methanol, a next-generation clean marine fuel. The project is expected to meet the rising demand for clean fuels and raw materials as the shipping industry moves towards decarbonization.

Methanol-Fuelled Tanker "Stena Prosperous" Officially Named in Singapore

Date: May 24, 2024

Key Points: Proman Stena Bulk's methanol-fuelled tanker, "Stena Prosperous," was officially named during a ceremony at the Marina Bay Cruise Centre in Singapore. The 49,900 DWT vessel will use a 20/80 blend of green and conventional methanol, offering 31% CO2e savings compared to voyages using VLSFO. This vessel is the last of six in the joint venture's fleet, all of which are now in commercial operation, highlighting methanol's role in reducing greenhouse gas emissions and promoting sustainable shipping practices.


Photo credit: The Methanol Institute
Published: 31 May, 2024

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