Connect with us

Alternative Fuels

SIBCON 2022 Interview: Clyde & Co discusses handling of bunker fuel quality disputes, alt fuels contracts

‘There are some important differences between VLSFO and biofuels, and as a result, parties should consider whether additional changes should be made to biofuel bunker contracts,’ says Paul Collier.

Admin

Published

on

Picture76

The following interview with Paul Collier, Legal Director, Clyde & Co is part of coverage for the upcoming Singapore International Bunkering Conference and Exhibition (SIBCON) 2022, where Manifold Times is an official media partner. 

Collier shares his insights on disputes related to marine fuel quality and bunker contamination, and provides helpful recommendations in handling off-specification bunker claims while touching on alternative fuels:

MT: How have bunker contamination cases at Singapore changed the legal landscape?

Bunker contaminations affecting multiple vessels are not uncommon, and much like the 2018 “Houston” contamination cases, and those originating from the US Gulf Coast in 2013 and 2007, the 2022 Singapore cases have renewed focus on whether basic ISO 8217 tests carried out on bunker samples are sufficient to identify off-specification bunkers. The underlying difficulty is that basic ISO 8217 tests carried out on bunker samples may not be capable of identifying all possible contaminants which could potentially risk causing damage to vessel engines. However, against this, there may be difficulties with parties carrying out more advanced testing (including GC/MS analysis) on bunker samples before their consumption, due to cost and time restraints, meaning that bunker fuel may be consumed before it has been identified as being off-specification. This has caused a significant number of cases of engine damage.

Bunker contamination cases have therefore raised a question as to whether fuel may be off-specification under clause 5 of ISO 8217, even if the fuel has been identified as being in compliance with ISO 8217 Table 1 or 2 parameters. In this regard, clause 5 of ISO 8217:2017 offers some protection to buyers, in that it provides that “the fuel shall be free from any material at a concentration that causes the fuel to be unacceptable for use” and “is not at a concentration that is harmful to personnel, jeopardises the safety of the ship, or adversely affects the performance of the machinery”, and buyers have relied on this to advance quality claims against bunker suppliers where tests have identified contaminants which do not form part of the Table 1 and Table 2 tests.

One interesting question will be how the ISO standards develop to deal with recent bunker contamination cases, and whether further parameters will be added to Table 1 and 2. However, it may not be straightforward for consensus to be reached as to the content of new ISO 8217 standards, given that there is a lack of technical consensus as to when the level of some compounds become “unsafe”, in circumstances where bunker supplies are non-standardised and typically contain hydrocarbons from several points of origin. 

MT: What are the key factors determining legal success of a plaintiff and defendant in a marine fuel quality / bunker contamination suit? Are there any simple operational steps players can include to protect themselves?

In general, the most important factor affecting the legal outcome in off-specification bunker claims is the quality of the evidence. If a party has good evidence supporting their position, then this significantly increases their prospect of success in any legal proceedings. In addition, good evidence will improve their settlement prospects (which may also increase the chance of a claim being settled at an early stage).

For this reason, it is worth all parties involved with a bunker supply collating and retaining evidence which could support their position.

The most important evidence is the collection of samples, with it being widely accepted that the most accurate samples are taken by drip sample at the receiving vessel’s manifold (ideally, witnessed by surveyor). However, parties should also consider whether they can retain any other contemporaneous evidence that supports their position. In the case of vessel owners, it is worth the Master and the crew ensuring that good records of engine maintenance and fuel management are kept, to assist in responding to any argument that engine damage was caused by another bunker stem or by poor management of the vessel’s engines.

MT: What is the first action a shipowner / bunker supplier / bunker trader should take when finding out contaminated bunker fuel has been involved in their delivery operation?

The first step that parties should take where there are suspected bunker contamination cases is to arrange for tests to be carried out on the fuel supplied. Whilst test results are awaited, the fuel should not be consumed, to avoid the risk of engine damage taking place in the interim. In addition, any bunker supplies which may be suspected as being off-specification should be kept segregated from other fuel.

If the test results are off-specification, the parties will then need to consider whether the fuel can be safely consumed or not, and whether any other steps need to be taken to mitigate their position. In this circumstance, parties should obtain both technical and legal advice on how to proceed.

MT: Alternative fuels such as methanol, biofuels, LNG, ammonia, hydrogen are expected to be within the marine fuels mix moving into IMO 2030/2050. Do you think current ISO 8217 standards need to be further developed to cover acceptable parameters for use of these material as bunker fuels? If not, what potential issues may arise when trading these materials with current ISO 8217 specs?

The ISO 8217 standards are primarily intended to be used for petroleum products, and additional standards will need to be developed to cover the full range of alternative fuels which are likely to be subject to increasing use by vessels. Whilst there are some standards in place for some alternative fuels, including ISO 23306 for LNG, further development of standards is needed, particularly in relation to “new” technologies such as hydrogen.

Parties should carefully consider whether it is appropriate to trade alternative fuels using ISO 8217, given that it is primarily intended to be used for petroleum products, and consider whether express reference should also be made to other standards (for example, EN14214 / ASTM D6751 in relation to biodiesel). If inappropriate specifications are used in a bunker supply contract, this will likely complicate the legal position and make it more difficult for buyers to contend that fuel supplied is off-specification.

MT: Biofuels, a popular option, seem to be the easiest route for shipowners to meet the IMO 2030 target. What are the contractual differences between a VLSFO and biofuel bunker contract and are there any specific clauses buyers and suppliers of biofuel bunkers should include to protect themselves during operations?

There are some important differences between VLSFO and biofuels, and as a result, parties should consider whether additional changes should be made to biofuel bunker contracts.

As a starting point, if buyers are seeking to use biofuels as a “green” energy source, the buyers may wish to consider pressing for sustainability warranties to be included in the contract. In this regard, there are concerns that the production of biofuels may have a negative impact on food security or have been produced by otherwise clearing lands beneficial to the environment. If this is a concern to the buyers, they may wish to place the supplier under contractual obligations to provide sustainable biofuels.

In addition, parties should consider the provisions regarding both the specifications and testing requirements, given the differences between VLSFO and biofuels. For example, parties may wish to consider whether joint testing should take place at a laboratory specifically accredited for testing biofuels. 

Given that biofuels deteriorate faster than traditional hydrocarbon fuels, the supplier may also wish to press for short time bars and an exclusion of liability for any damage suffered by the vessel engines if the fuel is not promptly consumed.

A list of other interviews conducted by Singapore bunkering publication Manifold Times on occasion of SIBCON 2022 are as follows:

Related: SIBCON 2022 Interview: Digitalisation in bunkering ops, can lower costs and enable decarbonisation, says StormGeo
Related: SIBCON 2022 Interview: Co-Convenors offer insights into Singapore’s upcoming Digital Bunker Document Standard
Related: SIBCON 2022 Interview: MFMs relevant for custody transfer of future liquid-based marine fuels, confirms Endress+Hauser
Related: SIBCON 2022 Interview: Clyde & Co discusses handling of bunker fuel quality disputes, alt fuels contracts
Related: SIBCON 2022 Interview: Singapore Bunkering TC Chairman shares republic’s direction on future marine fuels

 

Photo credit: Clyde & Co
Published: 28 September, 2022

Continue Reading

Alternative Fuels

ICS report: LNG and biofuels seen as most viable marine fuels over next decade

This was followed closely by HFO combined with abatement technologies while methanol ranked in fourth place, according to ICS’s new Maritime Barometer Report.

Admin

Published

on

By

RESIZED william william on Unsplash

A new report by the International Chamber of Shipping (ICS), published on Tuesday (23 June) found that  LNG and biofuels are seen as the most viable marine fuels over the next decade.

This was followed closely by HFO (Heavy Fuel Oil) combined with abatement technologies while methanol ranked in fourth place. 

The report found that in 2025 to 2026, maritime leaders are displaying a preference for traditional fuels that have established supply mechanisms. 

The ICS Maritime Barometer Report 2025–2026 surveyed C-suite level leaders, shipowners, and operators worldwide to identify the key risk areas shaping shipping. 

Despite slight decline, LNG shared top spot with biofuels as one of three most viable future fuels over the next decade. 

LNG maintained its position as a joint leading fuel in the Barometer, with roughly 51.35% of leaders naming it as one of the most viable fuels over the next decade. 

“This is despite a marginal softening in sentiment amongst maritime leaders compared to last year’s survey, reflecting its continued role as the most immediately scalable alternative within the current fuel mix,” the report said. 

However, the report noted that this positioning is increasingly shaped not just by infrastructure maturity, but by how geopolitical instability translates into fuel-specific perceptions of security, routing exposure, and price volatility across global trade flows.

This is particularly evident in Asia-Pacific and the Middle East, where LNG’s role is reinforced through continued investment in import and bunkering infrastructure.

Singapore remains the world’s leading LNG bunkering hub, supported by expanding small-scale supply chains and vessel availability, while South Korea and China are rapidly scaling receiving and bunkering capacity to support both shipping and power demand growth.

Biofuels record one of the sharpest increases in sentiment across the future fuels landscape to match LNG at 51.35% in this year’s report.

“This could reflect a shift driven less by structural conviction and more by operational response to heightened uncertainty in global energy and trade systems,” it said. 

Their growing prominence could be closely linked to the increasing attractiveness of low-friction compliance options in a context where alternative fuels remain constrained by uneven infrastructure development, fragmented regulatory alignment, and delayed capital deployment across key regions.

Compared with LNG, which is shaped by infrastructure lock-in and geopolitical price exposure, biofuels offer immediate operational flexibility.

Japan has emerged as a key driver of marine biofuel adoption, with government-backed trials involving major shipping lines such as NYK testing biofuel blends on international routes. China has also expanded pilot programmes using biodiesel and waste-derived fuels in coastal shipping, reflecting a pragmatic approach to emissions reduction in regional trade flows.

Note: The ‘ICS Maritime Barometer Report 2025–2026’ can be viewed here

 

Photo credit: william william on Unsplash
Published: 26 June, 2026

Continue Reading

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.

Admin

Published

on

By

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

Continue Reading

Biofuel

G2 Ocean rolls out book-and-claim service backed by biofuel voyages

Company has launched Emission Reduction Certificates, a new service enabling customers to reduce emissions associated with their transportation services through the use of marine biofuel.

Admin

Published

on

By

G2 Ocean rolls out book-and-claim service backed by biofuel voyages

Ship operator G2 Ocean on Wednesday (24 June) said it has launched Emission Reduction Certificates, a new service enabling customers to reduce emissions associated with their transportation services.

The service allows cargo owners and transport buyers to reduce their emissions from transportation by purchasing verified emission reductions generated from the use of biofuel in G2 Ocean’s operations.

The service is available to any company with emissions from transportation (Scope 3). It does not require cargo to be transported on specific low-emission G2 Ocean voyages.

For most companies, emissions from shipping are classified as indirect emissions (Scope 3) and sit outside their direct control. Reducing these emissions requires collaboration across the value chain.

Emission Reduction Certificates use a book-and-claim model, enabling customers to invest in emission reductions linked directly to maritime transport and to account for them in their climate reporting. The revenue will be reinvested in new biofuel voyages, helping create a cost-sharing model for biofuel and narrowing the gap between biofuel and regular fuel.

“Supply chain decarbonisation requires practical solutions. With our new service, Emission Reduction Certificates, customers can take immediate action to reduce their transport emissions while supporting the increased use of lower-emission fuels,” says Arthur English, Chief Executive Officer at G2 Ocean.

The emission reductions come from the use of certified biofuels on G2 Ocean voyages. They are verified and documented before being issued as digital certificates in a blockchain-connected registry. This registry tracks ownership and establishes a clear chain of custody for each certificate, ensuring that every certificate is unique and not double-counted or double-claimed.

“The certificates can be purchased and used by any company with emissions from transportation. The verified reductions are supported by audit documentation that enables credible climate reporting and emission accounting,” says Sigrid Bakken, ESG and Communications Director at G2 Ocean.

This ensures transparency, traceability and safeguards against double counting, providing customers with credible claims for decision-making, reporting and stakeholder communication.

 

Photo credit: G2 Ocean
Published: 25 June, 2026

Continue Reading

Trending