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GCMD trial confirms long-term operational feasibility of B24 biofuel blend in vessels

Six-month trial on a PCTC confirms long-term operational feasibility of B24, demonstrating that its continuous use had no adverse impact on engine performance or operation of fuel oil delivery system.

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GCMD trial confirms long-term operational feasibility of B24 biofuel blend in vessels

A six-month trial on a Pure Car and Truck Carrier confirmed that continuous use of a B24 blend had no adverse impact on engine performance or the operation of the fuel oil delivery system, said the Global Centre for Maritime Decarbonisation (GCMD) on Thursday (18 September). 

GCMD said this when releasing its Project LOTUS (Long-term impact of continuous use of biofuels on vessel operations) report.

Launched in partnership with NYK Line on 9 May 2024, the trial onboard a pure car and truck carrier (PCTC) assessed the impact of continuous use of a B24 blend, comprising 24% fatty acid methyl ester (FAME; also known as biodiesel) with very low sulphur fuel oil (VLSFO), on engine performance and operations of the fuel oil delivery systems. 

Using a structured monitoring framework, GCMD tracked fuel and lubricant quality at key sampling points across these systems, and inspected engines and fuel systems components throughout the trial. 

Key findings

Project LOTUS involved extensive laboratory testing of 94 fuel and 91 lubricating oil samples, alongside detailed engine inspections and measurements during the vessel’s scheduled post-trial dry dock.

The main and generator engines, which ran on B24 for 2,888 and 1,813 hours, respectively, performed comparably to when they operated on VLSFO.

Key observations confirmed no excessive sludge in fuel injection valves, no scratches in fuel injection pump plungers, and no liner or piston wear beyond original equipment manufacturer (OEM) specifications. Scavenge drain and engine oil analyses also showed no excessive wear elements.

While the acid value of B24 blends increased 2.5-fold after six months of storage, the fuel quality remained within ISO 8217 specifications. No microbial growth was observed in fuel samples.

With these findings, OEMs confirmed engine and hardware compatibility with long- term B24 use, with no significant impact on operational costs, provided appropriate maintenance and handling practices are followed.

A key outcome of Project LOTUS is the development of a structured monitoring framework designed around operational considerations for biodiesel use to systematically track equipment performance and identify anomalies arising from biodiesel operations.

A data log template was created based on an existing engine log and tailored to address the project’s specific needs. Now that this template has been successfully piloted, it is publicly available and can be further customised to accommodate different vessel setups.

Professor Lynn Loo, CEO of GCMD, said:  “Project LOTUS grounds the conversation around the extended use of biofuels in evidence. Our findings show that they can be deployed safely and reliably, providing a concrete pathway for shipping’s decarbonisation.

Nobuhiro Kashima, Senior Managing Executive Office of NYK Line, said, “The use of biofuels is one of the key options for advancing the sustainable development of the maritime industry. We hope that the outcomes of this project will offer new possibilities to those considering the adoption of biofuels and help accelerate their broader use in various fields. By sharing the value of decarbonisation and logistics across society, we aim to help shape the next generation of shipping together.”

Note: The report can be accessed here.

 

Photo credit: Global Centre for Maritime Decarbonisation
Published: 18 September, 2025

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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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Alternative Fuels

Hercules Tanker Management’s ‘Ultra-Spec Series’ tanker “Vanessa” begins maiden voyage

Designed for worldwide deployment, the series can transport and supply conventional marine fuels as well as alternative fuels up to B100 and methanol.

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Hercules Tanker Management’s ‘Ultra-Spec Series’ tanker “Vanessa” begins maiden voyage

Hercules Tanker Management (HTM) on Wednesday (2 September) said its latest Ultra-Spec Series of next-generation tankers, Hercules Vanessa, has commenced her maiden voyage.

HTM is the shipping venture launched by John A. Bassadone, founder and CEO of independent marine fuel supplier Peninsula.

The 10-vessel programme forms part of the company’s long-term fleet renewal strategy, replacing ageing tonnage with more efficient vessels while delivering the future-ready capability needed to support the maritime industry’s evolving energy landscape. 

Designed for worldwide deployment, the series can transport and supply conventional marine fuels as well as alternative fuels up to B100 and methanol. 

Hercules Vanessa is also the first in the series to feature MarineLINE, a high-performance cargo tank coating system. 

The vessel is currently en route to Port Louis to take bunkers and provisions before continuing southbound towards Cape Town. It is scheduled to discharge a cargo of biofuel, loaded at Nansha Terminal in China, in Ghent later this year.

“HTM’s Ultra-Spec Series continues to gather momentum as we build a modern fleet capable of supporting cleaner marine fuel supply chains,” the company said. 

Related: Hercules Tanker Management launches ‘Ultra-Spec Series’ bunker tanker “Harriet”

 

Photo credit: Hercules Tanker Management
Published: 3 September, 2026

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Alternative Fuels

NYK and Stolt-Nielsen target LNG, bio-LNG bunkering growth through Avenir LNG JV

NYK says joint venture will pursue opportunities in LNG and bio-LNG bunkering, supporting the maritime industry’s transition to lower-emission fuels.

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NYK and Stolt-Nielsen target LNG, bio-LNG bunkering growth through Avenir LNG JV

Avenir LNG on Tuesday (1 September) announced the completion of the transaction first announced in March, establishing Avenir LNG as a 50/50 joint venture between NYK Line and Stolt-Nielsen.

The partnership brings together the global reach, expertise and capabilities of two leading maritime groups, providing an even stronger platform from which Avenir can continue to grow.

“For Avenir, our focus remains clear: expanding our global LNG bunkering and small-scale LNG activities, accelerating the adoption of Bio-LNG, and helping our customers navigate the transition towards lower-carbon shipping,” the company said. 

“We are incredibly proud of what the Avenir team has built to date and excited about what this new partnership makes possible.”

With the completion of the transaction, NYK said it has established a joint ownership and operating structure with Stolt-Nielsen for Avenir LNG, an operator in the LNG bunkering sector with one of the world’s largest fleets of LNG bunker vessels.

“The joint venture will pursue opportunities in LNG and bio-LNG bunkering, supporting the maritime industry’s transition to lower-emission fuels,” NYK said in a separate statement. 

 

Photo credit: Avenir LNG
Published: 2 September, 2026

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