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Retrofit

LR report: Lack of yard capacity and capability could compromise marine retrofit ambitions

LR’s new Engine Retrofit Report highlights a shortage of repair yards with experience in conversions may hinder the take up of alternative bunker fuel technology by existing fleet.

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Classification society Lloyd’s Register (LR) on Tuesday (10 October) said its report on the state of technology, integration and compliance, alongside the business case for retrofitting vessels, has found that repair yard capability and capacity concerns could thwart the uptake of alternative marine fuel technology onboard existing ships.

The Engine Retrofit Report, has identified that retrofitting a significant number of the 9,000 and 12,900 large merchant vessels estimated to be part of the global fleet in 2030, could rapidly accelerate the maritime energy transition. However, it warns that these ambitions could be jeopardised by the limited number of repair yards currently capable of performing such conversions. 

Key factors influencing the size of the market and the timing of retrofits, include the date by which shipping begins building only zero-emission vessels, as well as the age at which owners or operators decide to retrofit their vessels and the suitable engine types and bore sizes.

The study, which analyses the state of engine retrofit demand, capacity, and uptake, also points to the new skills in naval architecture, electrical engineering, and fuel handling which will be required if the industry is to use retrofitting as an effective tool to accelerate decarbonisation. 

One of the key challenges with retrofits identified in the report is system integration, with significant issues such as accommodation for larger fuel tanks, space for fuel preparation equipment and ensuring safety measures are in place, all providing obstacles to rapidly retrofitting the existing fossil fuel fleet. 

Techno-economic modelling data revealed in the study shows that the use of renewable methanol or ammonia would significantly increase fuel costs, in some cases more than doubling for vessels in all segments, however, a low-cost scenario, where alternative fuels decrease in price and carbon pricing rises, could tip the balance in favour of alternative fuels. 

The study also highlights the importance of human factor considerations, underlining how the critical aspect of impact on crew members can often be overlooked during retrofitting. Assessing ergonomics, roles and responsibilities, competency and training, procedures processes, and occupational health will play a crucial role in ensuring retrofitting is safe and effective for ship operators. 

The report includes updates on the latest technology from Original Equipment Manufacturers (OEMs) including Wärtsilä, MAN Energy Solutions and WinGD.

Claudene Sharpe-Patel, Lloyd’s Register Technology Director, said: “Decarbonising the existing fleet is crucial for reducing the maritime industry’s greenhouse gas emissions. Without significant progress in this area, there could be as many as 20,000 commercial vessels relying on fossil fuels by 2050. We must, therefore, focus industry efforts on addressing the issues that LR’s Engine Retrofit Report raises such as yard capacity, conversion capability and system integration, helping stakeholders from the maritime value chain navigate the obstacles to installing future fuels technology on the existing global fleet.”

Photo credit: Lloyd’s Register
Published: 11 October, 2023

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LNG Bunkering

EXMAR to convert LNG carrier into floating transshipment unit for bunkering

Vessel will soon undergo a dry-dock including modifications to make the vessel suitable as a floating transshipment unit, dedicated to the LNG bunkering market.

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EXMAR to convert LNG carrier into floating transshipment unit for bunkering

Ship owner EXMAR on Thursday (6 August) announced that it has taken delivery of the 146,000 m³ LNG Carrier SIMAISMA

The vessel is secured under an initial seven-year charter contract with a “first-class counterpart”. 

“The vessel will soon undergo a dry-dock including modifications to make the vessel suitable as a floating transshipment unit (FTU), dedicated to the LNG bunkering market,” it said in a statement. 

The FTU will receive large parcels of LNG from trading LNG carriers and specialised LNG bunkering vessels will load at the FTU before supplying it as a fuel to vessels that use this LNG as a bunker fuel.

EXMAR’s CEO, Carl-Antoine Saverys, said: “EXMAR is gladly assisting its client in further paving the way to unlock LNG as a fuel for the shipping industry. 

“The FTU is a smart solution with which our client brings down the costs of the logistics relating to the LNG bunkering. 

“With this solution, we are building upon EXMAR’s close to 50 years of LNG experience. We look forward to deploying more of these assets to unlock the full potential of LNG as a fuel for the maritime industry.”

 

Photo credit: EXMAR
Published: 7 August, 2026

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Alternative Fuels

EC clears EUR 103 mil Dutch funding for renewable methanol and hydrogen-powered ships

Scheme will support purchase of vessels powered by renewable methanol or renewable hydrogen and retrofitting of existing vessels to enable them to use renewable methanol and renewable hydrogen.

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Guillaume Périgois on Unsplash

The European Commission recently said it has approved a EUR 103 million (USD 119 million) State aid scheme by the Netherlands to accelerate the greening of the Dutch maritime fleet. 

The scheme will support the purchase of new clean and zero-emission vessels powered by renewable methanol or renewable hydrogen and the retrofitting of existing vessels to enable them to use renewable methanol and renewable hydrogen. 

It covers different types of vessels, including passenger, cargo and work vessels, mainly operating in the short-sea shipping segment. The support will take the form of direct grants awarded under an open, transparent and non-discriminatory selection process.

The scheme aims to help companies overcome high upfront investment costs and limited market incentives that currently slow the uptake of clean shipping technologies. The aid will be granted between 2027 and 2031 and will help bridge the investment gap in line with the objectives of EU legislation such as the FuelEU Maritime and the EU Emission Trading System.

The Commission assessed the measure under EU State aid rules, in particular Article 107(3)(c) of the Treaty on the Functioning of the EU and the 2022 Climate, Environmental Protection and Energy Aid Guidelines (CEEAG). 

“The Commission concluded that the scheme is necessary and appropriate as the supported investments would not take place without public support at the same scale and within the same timeframe. The measure is also proportionate as it has limited effects on competition and trade in the internal market,” it said. 

 

Photo credit: Guillaume Périgois on Unsplash
Published: 3 August, 2026

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Retrofit

DNV on key lessons learned from a 20,000 TEU methanol retrofit delivered by global partners

DNV demonstrated how complex methanol retrofits can be carried out in practice through a project involving COSCO Shipping, CHI Shanghai, MARIC, suppliers, and DNV.

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DNV on key lessons learned from 20,000 TEU methanol retrofit

Classification society DNV recently highlighted how complex methanol retrofits can be carried out in practice through a project involving COSCO Shipping, CHI Shanghai, MARIC, suppliers, and DNV. 

Its latest Maritime Impact article detailed challenges in design integration, construction, commissioning, and operations, while demonstrating how close collaboration and early planning support more efficient delivery and knowledge transfer: 

The world’s first methanol conversion project for a mega container carrier was completed at CHI‑Shanghai’s yard in September 2025. At nearly 400 metres in length and with a capacity of 20,000 TEU, the seven‑year‑old vessel became the first ship of its kind to be retrofitted to run on methanol. 

Delivered through close coordination between COSCO Shipping, CHI Shanghai, designers, suppliers, and DNV, and supported by a process of continuous learning, the project demonstrated that deep, first‑of‑a‑kind retrofits can be executed safely, on time, and at industrial scale.

Designing a methanol conversion for a megaship

The vessel’s fuel system, designed only for conventional fuels, required fundamental changes to enable safe and compliant methanol operation across propulsion, auxiliaries, storage, and safety systems.

The general design was developed by MARIC, while CHI Shanghai carried out the detailed engineering and served as EPC contractor. The scope included conversion of the ship’s MAN B&W 11S90 main engine and two of its four Wärtsilä auxiliary engines to dual‑fuel operation. In parallel, new methanol fuel tanks with a total capacity exceeding 15,000 cubic metres were installed forward of the engine room, together with new fuel preparation and supply systems.

Coordinating the complexity of retrofitting

Delivering this as a retrofit rather than a newbuild added complexity that is often underestimated. Existing structural arrangements could not simply be replaced, and new systems had to be integrated into confined spaces, requiring innovative construction sequences and tight interface management between suppliers. 

“This was a very complex project involving many parties, including engine makers, fuel system suppliers, and automation and safety specialists,” says Yan Hao, Commercial Director at CHI‑Shanghai. “It was also the first time all of these suppliers had worked together on a methanol retrofit of this scale. Coordination was critical.”

Note: The full article by DNV can be read here.

 

Photo credit: DNV and COSCO Shipping
Published: 15 June, 2026

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