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Biofuel

ExxonMobil completes first sea trial of bio bunker fuel blend made from FAME

Firm supplied a B30 VLSFO, made using FAME Distillation Residue, to Wallenius Wilhelmsen’s vehicle carrier “Titus” in Zeebrugge.

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ExxonMobil completes first sea trial of bio bunker fuel blend made from FAME

US oil major ExxonMobil on Tuesday (23 June) said it has successfully supplied a B30 0.50% sulphur marine residual fuel blend (B30 VLSFO), made using fatty acid methyl ester (FAME) Distillation Residue, to Wallenius Wilhelmsen. 

The bio marine fuel blend was bunkered by the vehicle carrier Titus in Zeebrugge ahead of the sea trial, marking a significant milestone in ExxonMobil’s journey towards supplying the marine industry with lower GHG emission fuels. 

The B30 VLSFO fuel meets the RMG380 residual fuel oil classification and complies with ISO 8217:2017 with the exception of the bio blend component. It shares similar drop-in properties to a B30 VLSFO made with FAME produced from used cooking oil (UCOME). 

The fuel has the potential to reduce lifecycle GHG emissions compared to conventional fuels. 

Importantly, marine fuels made with FAME Distillation Residue have a major advantage over FAME itself, as there is currently no competition for this material from other transport sectors. 

Additionally, when compared to FAME in VLSFO blends, several key properties of the FAME Distillation Residue are closer to the VLSFO component, such as density and viscosity. This is beneficial as users will see a lower reduction in viscosity than that of a FAME in VLSFO blend, which makes it comparatively easier to handle onboard ships. Further, extensive lab testing has shown good compatibility between petroleum-based VLSFOs and this B30 VLSFO made with FAME Distillation Residue. 

The sea trial was successfully completed with no operational concerns. The B30 VLSFO batch was bunkered without issue. The onboard storage and handling of B30 VLSFO did not result in any filtration or purification issues. Engine performance remained stable, as confirmed by comparing key parameters recorded in the performance and condition monitoring reports before, during and after the trial. 

“This successful sea trial highlights a practical, cost-effective pathway for customers to reduce their lifecycle greenhouse gas emissions while maintaining operational performance. By leveraging FAME Distillation Residue, ExxonMobil can offer a drop-in solution that supports compliance with evolving EU regulations and helps operators advance their lower GHG emission goals confidence,” said Gideon Simmelink, Account Manager Marine Fuels, ExxonMobil. 

“Wallenius Wilhelmsen has a long-standing collaboration with ExxonMobil. This trial supports our efforts to assess new fuel options and advance our decarbonization ambitions,” said Kari Haugen, Senior Manager Energy Sourcing, Wallenius Wilhelmsen. 

Subject to regional availability, ExxonMobil offers a range of bio marine fuel blends (Bio VLSFO, Bio ULSFO, Bio MGO and Bio HSFO), which we have supplied into the ARA (Amsterdam-Rotterdam-Antwerp) region (VLSFO and USLFO), the UK (MGO and HSFO) and Singapore (VLSFO). 

These solutions are designed to help meet the diverse needs of the shipping industry while helping support GHG emission reductions. Always consult with engine manufacturers as OEMs may limit bio blend percentages or specific bio components for certain engine designs.

 

Photo credit: ExxonMobil
Published: 25 June, 2026

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Bunker Alerts

Low flashpoint found in Indonesia bunker fuels, alerts Maritec-Naias

Firm tested eight bunker samples representing LSMDO and B40 fuel grade from vessels that took fuel oil /bunkered in Indonesia ports, which indicated flashpoints as low as 39.5°C.

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RESIZED Shaah Shahidh on Unsplash

Bunker fuel testing and marine surveying business Maritec-Naias on Wednesday (12 August) issued an alert regarding bunker samples from vessels that took fuel oil/bunkered in Indonesia showing flashpoints as low as 39.5°C:

During the period of 21 July to 04 August 2026, Maritec-Naias tested eight bunker samples representing Low Sulfur Marine Distillate Oil (LSMDO) and B40 fuel grade from vessels that took fuel oil /bunkered in Indonesia ports, which indicated Flashpoints as low as 39.5°C.

All eight fuel samples tested were sourced from a single supplier.

Regulatory Implications:

Based on the results of the eight samples tested, the fuels do not comply with the minimum flashpoint requirement of 60 °C set by SOLAS and ISO 8217.

As per SOLAS requirements, the minimum flashpoint of any fuel carried in the tanks of a ship should be not less than 60 °C (with exception of fuel for lifeboats, which can be grade DMX with a flash point min of 43 °C).

ISO 4259 interpretation for tested flashpoint temperature is not taken into consideration here as the safety of onboard crew and vessel is of higher precedence.

Since 01 May 2024, it has been a MARPOL Annex VI requirement that the Bunker Delivery Note (BDN) includes either the actual flashpoint of a fuel as supplied or a declaration that its flashpoint has been determined as being at or above 70°C.

From 1 January 2026, SOLAS amendments clarified that the flashpoint requirement applies to fuels, which were specifically intended to have a flashpoint not less than 60°C as required under SOLAS II‑2/2.1.1 These amendments now align with MARPOL by requiring flashpoint details to be recorded on the BDN. Additionally, prior to bunkering, suppliers must provide the ship’s representative with a signed declaration confirming that the fuel meets the SOLAS flashpoint standard.

MARITEC-NAIAS RECOMMENDATIONS

When ordering fuels from Indonesia it is advised to insist on getting the actual flash point values from the supplier. If your vessel has bunkered a low flashpoint fuel it is prudent to observe/implement the precautions below:

  • Flame screens on tank vents should be maintained in good condition and there should be no sources of ignition in the vicinity of the vents. This will assist in safe natural ventilation of volatile components in the fuel.
  • No Smoking, no naked flame and no hot work must be allowed at any areas near to tank air vents.
  • Send additional tank(s) samples upon arrival in port to check the fuel properties and flash point results especially if there has been co-mingling of fuels in bunker tanks
  • If the vessel is out at sea, it may be possible to obtain dispensation from your Flag State Administration up to the next arrival port.
  • Put the supplier on notice promptly and notify your P&I club.

 

Photo credit: Shaah Shahidh on Unsplash
Published: 13 August, 2026

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Alternative Fuels

South Korea’s Polaris Shipping orders tri-fuel bulk carriers for Vale charter deal

Bulk carriers, which will be delivered sequentially from 2031, will be equipped with WinGD-developed engines capable of using methanol, ethanol and heavy fuel oil as marine fuels.

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South Korea’s Polaris Shipping orders tri-fuel bulk carriers for Vale charter deal

South Korean shipowner Polaris Shipping recently said it has signed a newbuilding contract for four tri-fuel vessels with Chinese shipbuilder Qingdao Beihai Shipbuilding Heavy Industry on 4 August.

The 210,000-dwt Newcastlemax bulk carriers, which will be delivered sequentially from 2031, will be equipped with WinGD-developed engines capable of using methanol, ethanol and heavy fuel oil as marine fuels.

The vessels are also designed as LNG- and ammonia-ready ships, allowing them to be converted to LNG or ammonia propulsion in the future.

Polaris Shipping also plans to significantly improve energy efficiency and reduce greenhouse gas emissions by applying various energy-saving technologies, including wind-assist propulsion systems, rotor sails, departure optimisation and land-based systems, to the vessels.

Polaris Shipping has completed a 25-year long-term charter contract for the bulk carriers with Brazilian iron ore producer Vale.

Polaris Shipping plans to sign construction contracts for up to four additional 210,000-dwt eco-friendly Newcastlemax bulk carriers with Chinese shipbuilder Hengli Heavy Industries in the near future. The Newcastlemax bulk carriers ordered from Hengli will be built as high-efficiency, environmentally friendly vessels to replace the company’s existing older bulk carriers.

 

Photo credit: Polaris Shipping
Published: 13 August, 2026

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Financial Result

Fratelli Cosulich marine energy unit records EUR 7.1 million net profit in 2025

Bunker Trading revenue, the Group’s core activity, at the end of the year stood at approximately EUR 1.382 million compared to approximately EUR 1.638 million in 2024.

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Fratelli Cosulich marine energy unit records EUR 7.1 million net profit in 2025

Genoa-based international shipping and logistics company Fratelli Cosulich Group on Thursday (31 July) recorded EUR 58.6 million (USD 68 million) in EBITDA in 2025, substantially in line with the EUR 59.7 million recorded in 2024 and remaining close to its all-time highs. 

The company’s consolidated turnover reached EUR 1.877 billion, compared with EUR 2.128 billion in 2024.

“This decrease must be read considering the significant weight of Marine Energy and bunker trading activities, where turnover is naturally influenced by fuel prices, market dynamics and the euro dollar exchange rate,” the company said in its 2025 annual report. 

“For this reason, the reduction in revenues does not represent a proportional decrease in the Group’s operational strength.”

The Group recorded a net profit of EUR 20 million with its marine energy business unit delivering EUR 7.1 million. The unit also achieved EUR 16.8 million in EBITDA. 

In 2024, the company recorded a net profit of EUR 20.6 million with its marine energy business unit delivering EUR 5.6 million. The unit also achieved EUR 28.1 million in EBITDA. 

On the performance of its bunker trading activity, also during the year just ended, as in 2024, the company said margin stabilisation was recorded, remaining at levels similar to the average of previous years.

Bunker Trading revenue, the Group’s core activity, at the end of the year stood at approximately EUR 1.382 million compared to approximately EUR 1.638 million in 2024.

“In 2025, Marine Energy exceeded expectations in a more competitive market marked by lower prices, strengthening its results through a solid commercial structure, key account relationships and a focused approach to smaller bunkering hubs,” the company said.
 “Commercial development was supported by further expansion towards Asian customers, including the opening of a dedicated Japan desk, while the unit prepared the basis for a future local presence.”

The company added that the transition towards a multi-fuel offering continued to move from strategy to operations. 

In Singapore, the unit completed its first B100 biofuel bunker delivery through Marta Cosulich, demonstrating its ability to provide lower-carbon alternatives using its future-ready fleet. 

The Group also entered into a strategic cooperation with a “long-established shipping player” to explore opportunities in methanol, LNG and ammonia bunkering.

The company added that fleet development remained central. 

“Construction progressed on the new series of methanol-ready IMO II chemical bunker tankers, while Maya Cosulich was delivered in December,” it said.

“Designed for safe and efficient alternative fuel delivery, she represents another tangible step in expanding the unit’s physical capabilities for the evolving needs of maritime customers.”

Related: Fratelli Cosulich marine energy unit records EUR 5.6 million profit in 2024

 

Photo credit: Fratelli Cosulich
Published: 12 August, 2026

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