Higher regional fuel stocks have not made short-notice bunkering straightforward in Amsterdam, Rotterdam and Antwerp. Meanwhile, Rotterdam's biofuel and LNG assessments have moved in different directions, making last week's fuel comparison a poor substitute for a fresh calculation.
For the week ending 30 October, the practical theme is buying on a complete set of terms: fuel specification, energy content, delivery window, compliance assumptions and payment conditions. Here are six developments worth a closer look, based on reports published from 26 to 30 October.
1. ARA stocks rise, but buyers still need to book ahead
ENGINE's Friday report puts independently held ARA fuel oil stocks at an October average of 5.59 million barrels, 2% above September. That is a monthly inventory comparison, not a measure of fuel available for immediate delivery.
The same report says prompt bunker availability remains tight, with a trader advising five to seven days' notice to obtain good supplier coverage. Friday's market update also shows how quickly neighbouring ports can diverge: at its 09:00 GMT snapshot, Rotterdam LSMGO had moved to a $42-per-tonne premium over Antwerp, from a $10 discount the previous day.
For a vessel with a fixed call, a cheaper assessment elsewhere is only useful if the location and delivery arrangements work. Ask for the actual slot and full delivered terms before changing a bunker plan.
2. Rising gas prices change Rotterdam's LNG comparison
On Monday, ENGINE assessed ARA LNG bunkers at $1,776 per tonne, up $121 week on week. It linked the European gas-price rise to Norwegian supply disruptions, colder forecasts and geopolitical risk. That does not establish a local Rotterdam bunker-delivery outage.
Its separate fuel-switch model showed LNG used in Otto medium-speed engines moving from a $23-per-tonne discount to LSMGO to a $44 premium. For diesel slow-speed engines, LNG still showed a discount to LSMGO in the same assessment.
Those modelled comparisons are adjusted for energy content and include estimated EU-to-EU voyage compliance costs and pooling values. They are not cash supplier quotations. The lesson is specific: engine type and voyage assumptions can change the answer, even before delivery costs are considered. These are Monday's assessments, not Friday's closing prices.
3. Rotterdam's biofuel premium narrows
Friday's ENGINE biofuel snapshot reported Rotterdam B30-VLSFO, using a POMEME blend component, down $36 per tonne over the week while conventional VLSFO rose $23. The assessed premium narrowed by $59 to $96 per tonne.
The report also put Rotterdam B100 at $1,162 per tonne and cited a trader reporting stronger demand as its discount to LSMGO widened. That is a trader's demand observation, not a measured increase in port-wide sales.
A smaller price gap makes it worth revisiting suitable biofuel options. It does not make unlike products interchangeable. Compare blend, feedstock, energy content, vessel suitability, sustainability documentation and any compliance value alongside the delivered price. Keep the outright fuel assessment separate from a calculation that adds assumed carbon-cost savings or pooling income.
4. CMT's quality advisory puts the receiving process back in focus
Testing specialist CM Technologies issued an advisory on 26 October after fuel-quality alerts at major bunkering ports, including Rotterdam and Antwerp. It highlighted risks associated with contamination, stability and the handling of different batches on board.
The advisory draws on problems and sample data from earlier months. It is a new warning this week, not evidence that the cited incidents all happened this week. CMT also cautions against directly blaming individual contamination cases on conflict.
For buyers, our takeaway is to retain specification, sampling and testing requirements alongside the commercial offer. For vessel teams, the advisory is a reminder that two fuels which are stable separately may behave differently when mixed. Price comparison and fuel-management preparation need to be part of the same purchasing decision.
5. A new calculator makes biofuel assumptions easier to inspect
ZERO44 launched a free fuel-cost calculator, reported by Ship & Bunker on Wednesday. The tool compares fossil fuel and biodiesel while showing how carbon costs and potential compliance-surplus revenue affect the result.
Its public page allows changes to fuel prices and voyage scope. It also sets out assumptions about biodiesel emissions intensity, future allowance prices and the value of compliance surpluses. Its longer-term model assumes an IMO Net-Zero Framework start in 2029; that is a modelling assumption, not a guarantee about the rules that will apply.
The useful feature is visibility into the calculation, not a universal savings figure. Before using a model to support a purchase, replace defaults with assumptions relevant to the vessel, voyage, certified fuel and commercial arrangements. A modelled surplus is not the same as secured revenue.
6. Propeller's interview highlights the financing behind a bunker offer
In a Ship & Bunker interview published on Monday, Propeller Fuels CEO Robert Thompson described rising fuel prices and credit requirements as pressures on smaller traders. He said suppliers increasingly seek payment within seven to 14 days while owners may pay after 30 days or more.
These are an industry participant's observations, not independently established payment terms across the whole market. But they explain why credit and settlement conditions deserve attention alongside the headline price.
Thompson also argued for better connections between purchasing, fuel-quality information and compliance records. Our takeaway is practical: an offer should be evaluated as a commercial package. Keep price, payment terms, specification, supporting documents and delivery commitments together, so that important differences are not lost between separate emails and systems.
The buying takeaway
This week's numbers show why a bunker decision cannot rest on one benchmark. Regional stocks can rise while prompt delivery remains tight. LNG and biofuel economics can move differently. A competitive fuel assessment can still be a poor fit for a vessel's machinery, schedule or documentation requirements.
Use bunker price indications as context, checking the assessment date and grade. Then define the actual requirement: port, vessel, quantity, specification and delivery window.
Bulugo's marine fuel procurement workflow helps structure that enquiry and move towards supplier quotes. The objective is to compare offers that answer the same requirement, with the important commercial and operational differences visible.
Sources
- ENGINE, 30 October 2026: ARA fuel oil stocks rose 2% in October and Europe & Africa Market Update 30 Oct.
- ENGINE, 26 October 2026: LNG Bunker Snapshot: Rotterdam price surges and Fuel Switch Snapshot: gas rally changes LNG and LBM comparisons.
- ENGINE, 30 October 2026: Biofuel Bunker Snapshot: Rotterdam B30-VLSFO premium narrows.
- CM Technologies advisory via Seaborne Communications, 26 October 2026: Bunker quality alerts prompt concern over engine damage and repair costs.
- Ship & Bunker, 28 October 2026: ZERO44 launches fuel-cost calculator. Primary tool and assumptions: ZERO44 Fuel Cost Calculator, checked 31 October 2026.
- Ship & Bunker, 26 October 2026: Interview with Propeller Fuels CEO Robert Thompson.