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Clean tech makes every drop of fuel count, says Simon Potter of Houlder

Clean technologies will complement low and zero carbon fuels and such techs are needed to create zero-carbon ship of the future and to reduce costs in the short term and long term.

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The following is an article written by Simon Potter, Director of Sustainability Advisory to marine engineering consultancy Houlder elaborating the importance of the shipping industry to focus on both clean technologies and future fuels to meet CII, impact the existing fleet now, and ensure less energy-dense future fuels get a helping hand. The article was shared with Singapore-based bunkering publication Manifold Times:

Carbon Intensity Indicator

The shipping industry is witnessing a period of deeply impacting regulation that will require major investment and technological innovation. For example, the International Maritime Organization’s (IMO) Carbon Intensity Indicator (CII) regulations coming into effect in January 2023, will have a significant impact on owners, operators and maritime operations more broadly. 

There is a real and present risk of unintended consequences emerging from the implementation of CII. The new regulations may encourage the majority of the industry to do little but slow steam and wait for alternative fuels to emerge at scale, rather than invest in the plethora of innovative, commercially ready clean technologies.

While slow steaming to reduce fuel use is better than not acting at all, it is a pessimistic approach. Strategies such as slowing steaming reduce the capacity of the existing fleet, making the challenge of vessel replacement even bigger as worldwide cargo demand continues to grow. Perversely these strategies themselves make the need for energy efficiency and renewable and sustainable propulsion (clean) technology even more important; if the global fleet needs to grow, so too will greenhouse gas emissions. 

It is important that owners and operators do not continue to overlook the ‘quick wins’ – especially to the current fleet – that clean technology represents. The existing global fleet is worth over $1 trillion and therefore must not be ignored. A big chunk of that cost sits on bank balance sheets, which constitutes significant risk if these assets are not managed properly through the industry’s decarbonisation. 

Shipowners need to integrate available clean technologies into their roadmap to immediately drop emissions and fuel consumption while alternative fuels continue to scale up. This also offers the current fleet an opportunity to keep pace with the rapidly accelerating environmental objectives coming from regulators, the market and the end consumer.

A package of solutions

When looking at clean technology and new fuels, It’s not a question of choosing one over the other. Clean technologies will complement low and zero carbon fuels, and we need them to create the zero-carbon ship of the future and to reduce costs in the short term and long term. 

We already have a huge range of options that complement future fuels and reduce carbon emissions. These include wind propulsion, air lubrication, battery energy storage, hull coating technology, hydrodynamic energy saving devices, and voyage optimisation software, to name a few.

At Houlder, we believe there is no single best energy efficiency solution for CII compliance or for shipowners looking to proactively control their own decarbonisation agenda. There are a multitude of clean technologies that can be deployed today, but it is critically important to determine how they can be packaged together for the greatest effect and to achieve the best return on investment.

It is important to research your options in detail. For example, North Star Shipping (NSS) commissioned a comprehensive study to help develop of a greenhouse gas reduction strategy across its fleet of over 40 vessels. An expert team first established the greenhouse gas emissions and carbon intensity of the current fleet and its operations before identifying the most suitable technologies and operational measures to reduce carbon emissions. This includes defining the cost, benefits and timeline for implementation of these technologies.

Every drop counts

It becomes increasingly clear that all low and zero-carbon alternative fuels will be more expensive and less energy-dense than current oil-based fuels – meaning the unequivocal rationale for investment in clean technologies only strengthens further. Any technology that can improve fuel efficiency and can make less potent fuels go further is a valuable asset. 

Regulation may be setting milestones in the shipping industry’s decarbonisation journey, but the damage done by our carbon emissions is cumulative and won’t be reversed by future fuels. The reality is that most new fuels will not be residual, commoditised products for decades – especially for smaller ship owners and operators – and waiting is not an option. Every drop of fuel saved right now matters, and all measures taken now to reduce emissions through clean technologies provide owners with a more optimised path forward towards full decarbonisation in the future. 

Effective decarbonisation strategies must encompass widespread considerations from regulatory requirements and environmental and social governance to green financing, naval architecture and engineering. What’s clear is that adopting the right clean technology today – in combination with an alternative fuels strategy – makes commercial and environmental sense.

 

Photo credit: Houlder
Published: 30 September, 2022

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Alternative Fuels

Yang Ming orders six LNG dual-fuel, ammonia-ready containerships from Hanwha Ocean

Each of the six new vessels will have a capacity of up to 13,650 TEU and feature LNG dual-fuel propulsion and Ammonia Fuel Ready specifications.

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Yang Ming orders six LNG dual-fuel, ammonia-ready containerships from Hanwha Ocean

Taiwanese shipping firm Yang Ming Marine Transport Corporation (Yang Ming) and South Korean shipbuilder Hanwha Ocean on Wednesday (2 September) signed a shipbuilding contract for six 13,000 TEU class LNG dual-fuel container vessels. 

The contract was signed by Dr. Chuck Tsai, Chairman of Yang Ming, and Mr. Charles Kim, CEO of Hanwha Ocean. The vessels are scheduled for delivery between 2028 and 2029. 

They will complement Yang Ming’s existing fleet of 10,000+ TEU vessels and serve as key vessels on East-West services, with deployment flexibility across trade lanes connecting Asia with the East and West Coasts of North America, South America, and the Mediterranean. 

Each of the six new vessels will have a capacity of up to 13,650 TEU and feature LNG dual-fuel propulsion and Ammonia Fuel Ready specifications.

“As Yang Ming transitions toward net-zero emissions, LNG provides a relatively mature and economically viable alternative fuel solution, capable of reducing greenhouse gas emissions by approximately 20%,” the company said. 

“At the same time, ammonia can serve as a carbon-free fuel by utilising converted LNG storage facilities, while offering relatively lower conversion costs and comparatively well-developed supply chains and infrastructure. The Ammonia Fuel Ready design will therefore provide Yang Ming with greater flexibility in responding to increasingly stringent international regulations on greenhouse gas emissions.”

In addition, the vessels will be equipped with Type B LNG fuel tanks with a design pressure of 1.0 bar to enhance the safety and efficiency of LNG operations, together with a range of energy-saving technologies, including Wind Shields, Rudder Bulbs, Pre-Swirl Stators, and Shore Power Systems. Smart ship technologies and cybersecurity protection features will also be incorporated to enhance operational efficiency, safety, and reliability while effectively reducing fuel consumption and greenhouse gas emissions.

Deliveries under Yang Ming’s next-generation fleet optimization plan commenced earlier this year. By 2030, a total of 24 new vessels are expected to enter service. 

This includes 18 LNG dual-fuel vessels—comprising five 15,500 TEU, seven 16,000 TEU, and the six 13,000 TEU vessels under this contract—alongside six 8,000 TEU methanol dual-fuel-ready ships. 

 

Photo credit: Yang Ming Marine Transport
Published: 4 September, 2026

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LR, China’s MARIC unveil tanker concept ready for three future bunker fuels

Both secured AiP for a new 114,000 DWT product and crude oil tanker designed to accommodate future conversion to LNG, methanol or ammonia.

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LR, China’s MARIC unveil tanker concept ready for three future bunker fuels

Lloyd’s Register (LR) and the Marine Design and Research Institute of China (MARIC) on Thursday (3 September) have secured Approval in Principle (AiP) for a new 114,000 DWT product and crude oil tanker designed to accommodate future conversion to LNG, methanol or ammonia.

Announced at SMM 2026, the concept addresses one of the biggest investment challenges facing shipping today: the need to develop vessels and capabilities that can support a range of alternative fuel options and pathways as technologies, infrastructure and regulations evolve.

While LNG is already a mature fuel pathway, methanol and ammonia remain at an earlier stage of development, with questions around global fuel availability, infrastructure development, economics and long-term adoption.

The 114,000 DWT tanker concept has been designed as a product and crude oil carrier that can accommodate future conversion to LNG, methanol or ammonia as technologies, regulations and fuel supply chains mature. By incorporating conversion readiness at the design stage, the concept aims to reduce future retrofit complexity and provide owners with greater confidence when planning long-term fleet investments.

The design concept was reviewed against LR’s July 2026 class rules and regulations, including requirements relating to ships using gases and other low-flashpoint fuels, alongside relevant IACS Common Structural Rules for oil tankers. Final classification and statutory approval remain subject to full compliance with all applicable rules and regulations.

Theo Kourmpelis, Global Business Director for Tankers, Lloyd’s Register, said: “Shipowners are being asked to make major investment decisions today despite continued uncertainty around which fuels will dominate in the decades ahead. Alternative fuel solutions each offer potential pathways to compliance, but fuel infrastructure, regulation and economics continue to evolve at different speeds around the world.

“Designs that preserve flexibility will be critical in helping owners manage risk while preparing for multiple future scenarios.”

Si Nan, Marine & Offshore Marketing Department Vice Director, MARIC, said: “As the industry explores different decarbonisation pathways, shipowners need vessel designs that can adapt alongside technological and regulatory developments. This concept was developed specifically to provide greater fuel flexibility and long-term resilience, allowing owners to respond to changing market requirements without being locked into a single fuel strategy.

“Receiving Approval in Principle from Lloyd’s Register is an important milestone that validates the design concept and supports its future development.”

 

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

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Alternative Fuels

DNV: Alternative-fuelled vessel orders hit highest monthly level since October 2024

LNG-fuelled vessels accounted for the vast majority of August activity while the strong summer performance marked a significant acceleration in ordering activity after a relatively slow start to the year.

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DNV: Alternative-fuelled vessel orders hit highest monthly level since October 2024

Latest data from classification society DNV’s Alternative Fuels Insight (AFI) platform alternative-fuelled vessel ordering was strong in August, with 52 new vessels added to the platform.

This is the highest monthly total since October 2024 and follows another active month in July, when 47 vessels were added to the database.

LNG-fuelled vessels accounted for the vast majority of August activity, with 46 orders recorded. The container segment led the way with 30 orders, while the car carrier segment contributed a further 12 LNG-fuelled vessels. In addition, four ethanol-fuelled bulk carriers and two hydrogen-powered bulk carriers were added during the month, as well as one LNG bunker vessel.

The strong summer performance marked a significant acceleration in ordering activity after a relatively slow start to the year. In total, 242 alternative-fuelled vessel orders have been placed in the first eight months of 2026, representing a 27% increase compared with the same period in 2025.

LNG remains the dominant fuel choice, accounting for 63% of all alternative-fuelled vessel orders registered so far this year. Container vessels represent the largest share of these LNG orders (59%), followed by car carriers (30%).

Jason Stefanatos, Global Decarbonization Director at DNV Maritime, said: “The past two months have been particularly strong for alternative-fuelled vessel ordering, with August recording the highest monthly total we’ve seen since October 2024. This has helped lift year-to-date orders to a level well above the same period last year.

“LNG remains the leading fuel choice, driven largely by activity in the container and car carrier segments. These sectors have been among the earliest adopters of alternative fuels, supported by predictable liner operations and increasing demand from cargo owners to reduce emissions across supply chains. 

“For many owners, LNG offers a combination of emissions reductions, fuel availability and future flexibility while the longer-term fuel landscape continues to evolve. 

“At the same time, the latest figures include orders for ethanol- and hydrogen-fuelled vessels, highlighting that owners continue to explore a range of decarbonization pathways. Different segments are making different fuel choices, but the overall level of activity demonstrates continued investment in lower-emission shipping.”

Screenshot 2026 09 04 at 12.29.26 PM Screenshot 2026 09 04 at 12.29.36 PM

 

Photo credit: DNV
Published: 4 September, 2026

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