Marine fuel buyers did not get a simpler market this week.
Singapore remained tight for prompt bunker stems. May sales data showed the world's biggest bunker hub still shifting product by product, not as one neat market. A VLSFO quality alert put certificates and testing back in the frame. Hong Kong pushed harder on alternative-fuel incentives and mass flow meter certification. Methanol looked both more real and more uncertain, depending on which story you read.
That is probably the right way to understand the market now. The transition is not a clean handover from one fuel to another. It is a messy period where conventional fuels still dominate, alternative fuels are becoming operational in specific ports and supplier networks, and buyers need more evidence before they can make confident decisions.
The useful question is no longer just "what is the price?" It is: who can supply, where, when, with what documentation, and how much confidence can the buyer put behind the answer?
Singapore availability stayed tight
ENGINE's East of Suez update showed Singapore still awkward for buyers needing prompt supply. Recommended lead times were 10-14 days for VLSFO, 7-10 days for HSFO and 7-10 days for LSMGO.
That is not just market colour. Lead time is commercial data.
A buyer can have three suppliers, five indications and a spreadsheet full of numbers, but if the vessel is calling in less than a week and the realistic VLSFO lead time is closer to two weeks, the procurement problem changes. The useful response is not only to search for a lower number. It is to understand which suppliers can actually deliver inside the stem window, which alternatives exist on the route, and what trade-offs the vessel operator is being asked to accept.
This is where bunker procurement needs to become more structured. Port, grade, quantity, delivery window and supplier availability all need to be captured together. Otherwise the buyer is left doing the hardest part of the work in phone calls, emails and memory.
Singapore sales data showed one hub, many product stories
Singapore's May bunker sales were down year on year, according to Ship & Bunker's analysis of MPA data, but the details were more interesting than the headline.
Conventional and biofuel bunker demand softened compared with May 2025, while the month-on-month picture was firmer. VLSFO and HSFO were down year on year. Distillates were sharply higher month on month. Biofuel blends fell for a third consecutive month. LNG bunker sales reached their highest level since January 2023.
That mix matters because "Singapore bunkers" is becoming too broad a phrase to be very useful on its own. Buyers do not procure a market. They procure a product, in a port, for a vessel, in a window, from a supplier with a specific capability.
For suppliers, the same point runs in reverse. It is not enough to be present in Singapore. The question is what the supplier can actually deliver: VLSFO, HSFO, MGO, biofuel blends, LNG, methanol, or some combination of those, with the right licences, assets and documents behind the claim.
Fuel quality put certificates back in the spotlight
Maritec-Naias issued a Singapore VLSFO alert after finding high catalytic fines and elevated acid numbers in samples from two suppliers. The note did not frame this as a broad Singapore fuel-quality problem, but it did advise buyers intending to bunker in the region to request a Certificate of Quality before loading.
That is the kind of issue that exposes the limits of price-led procurement.
Two offers may look similar in a quote table. They are not similar if one carries more uncertainty around quality, documentation, sampling history or claims handling. Buyers need a workflow that treats certificates, BDNs, test results and supplier history as part of the decision record, not as attachments scattered across inboxes.
In other words, the procurement record should not stop at "supplier selected" and "price agreed". It should also show the evidence behind the decision.
MPA's multi-fuel message was refreshingly realistic
Singapore's Maritime and Port Authority is not pretending the industry is about to pick one winner. MPA chief executive Ang Wee Keong told Platts that shipping is likely to face an extended multi-fuel transition, complicated by fragmented regulation, uneven infrastructure readiness and uncertain availability.
That is a more useful message than the usual future-fuel theatre.
The bunker market is not moving from fuel A to fuel B. It is moving toward a longer period in which buyers may need to compare conventional fuels, biofuels, LNG, methanol, ammonia pathways and emissions-accounting options across different ports and trade lanes.
That makes procurement more complicated, not less. A buyer will need to know whether a product is actually available, whether the supplier is licensed, whether the delivery asset exists, whether documentation supports the claim, and whether the vessel can use the fuel safely and commercially.
The industry likes to talk about fuel choice. The harder operational question is fuel confidence.
Methanol looked real in China, and fragile in the US
Chimbusco took delivery of the 8,500 dwt Zhong Ran LV Neng 85 in Zhoushan, its first Chinese methanol bunkering vessel for dual-fuel ships. Manifold Times reported that the vessel strengthens Chimbusco's green methanol bunkering capability across major domestic ports, following methanol bunkering licences in Shanghai and Ningbo.
That is what useful future-fuel progress looks like: named supplier, named vessel, named ports, operating capability and regulatory permission.
But the same week also gave the market a reminder that not every methanol plan will survive contact with commercial reality. SunGas cancelled its Beaver Lake low-carbon methanol project in Louisiana, citing slower-than-expected marine-fuel adoption, uncertainty around carbon capture and storage, regulatory support, financing and infrastructure constraints.
Both stories can be true at once. Methanol is becoming operational in some places and harder to finance in others. For buyers, the lesson is to be precise. "Methanol available" is not a useful procurement statement unless it is backed by port, supplier, asset, licence, delivery history, timing and documentation.
Hong Kong is trying to turn ambition into operating signals
Hong Kong's Marine Department launched incentive schemes from 16 June to encourage alternative marine fuel uptake. The schemes cover LNG, methanol, ammonia, hydrogen and B20-plus biodiesel, and are part of Hong Kong's attempt to attract more green-fuel bunkering and related supply-chain activity.
Hong Kong also saw its first vessel certified under the Quality Bunker Operator Scheme. Chimbusco Pan Nation's Hai Gong You 306 became the first bunker barge certified under the city's mass flow meter scheme, which is designed to improve delivery accuracy and transparency.
These are two different types of signal, but they point in the same direction. Incentives can encourage supply and demand. Certification can increase trust in delivery. Together, they show Hong Kong trying to compete not just on location, but on alternative-fuel readiness and operational credibility.
Singapore is still the benchmark for scale and standards, but regional competition is getting more interesting. Buyers comparing Singapore, Hong Kong, Zhoushan and other Asian ports will increasingly care about the quality of the delivery ecosystem, not just headline price.
Lower-carbon supply still needs a document trail
Repsol launched commercial supply of co-processed marine fuels with renewable content at Algeciras this week, tied to the first commercial voyage of its new bunkering vessel Bahia Candela. The fuel was loaded at Repsol's Petronor refinery in Bilbao and delivered to customers in Spain.
Verra also published VM0053, a Verified Carbon Standard methodology for alternative low-carbon fuels in shipping. The methodology applies to fuels such as green ammonia, hydrogen and e-fuels replacing fossil fuels, and is designed to provide an independent accounting framework for emissions reductions.
The connection between those stories is evidence.
As soon as a buyer pays a premium for lower-carbon fuel, the procurement process has to carry more than product and price. It needs claims documentation, pathway information, chain-of-custody evidence and some confidence that the emissions benefit can be explained later to finance, compliance or customers.
That is a procurement problem as much as a sustainability problem. If the evidence lives in separate PDFs, inboxes and supplier promises, it will be hard to defend. The workflow needs to carry the claim from enquiry to delivery to audit.
What this week tells us
The marine fuel market is getting more fragmented, but not in an abstract way.
Singapore availability is a lead-time problem. Singapore sales are a product-mix problem. Fuel quality is a documentation problem. Methanol is a port-and-asset problem. Hong Kong's incentives and MFM certification are trust and competitiveness signals. Lower-carbon fuels are already becoming an evidence problem.
For buyers, that means the basic RFQ has to do more work. It needs to capture the requirement clearly, surface realistic supplier options, keep track of the documents and make the decision easy to reconstruct later.
For suppliers, it means capability has to be expressed more precisely. Not "we do alternative fuels", but which fuel, in which port, using which asset, under which licence, with what evidence and lead time.
That is the direction bunker procurement is heading. Less guesswork. More structure. Better evidence. And a lot more attention to the operational details that decide whether a stem actually works.
The price still matters. This week was another reminder that it is not enough.
Sources
- ENGINE: East of Suez Market Update 18 June
- Ship & Bunker: Singapore May bunker sales drop 7.4% on the year
- Manifold Times: High catalytic fines and elevated acid numbers found in Singapore VLSFO
- Hellenic Shipping News / Platts: Singapore's MPA sees extended multi-fuel shift
- Manifold Times: Chimbusco takes delivery of methanol bunkering vessel in Zhoushan
- Hellenic Shipping News: Hong Kong launches incentives to boost alternative fuel uptake
- Ship & Bunker: CPN bunker barge first certified under Hong Kong MFM scheme
- Ship & Bunker: SunGas scraps US methanol project amid slow marine fuel adoption
- Ship & Bunker: Repsol launches co-processed marine fuel supply at Algeciras
- Verra: New methodology for alternative low-carbon fuels in shipping