Bunker Delivery Note Requirements for Emissions Reporting

Bunker delivery note requirements come down to one test: can the buyer's compliance team rebuild the fuel's emissions numbers from the documents alone? The BDN and the certificate of quality together carry the fuel identity, quantity, sulphur and energy data that FuelEU Maritime, EU ETS and the emerging UK fuel standard are checked against.

Suppliers who prepare both documents for reporting, not just for the signature, win the repeat stem. Marine fuel is now bought against a compliance file as much as a price.

Why the BDN stopped being a delivery receipt

The BDN began as proof of what was delivered and how much was paid. It now feeds emissions accounting, and the paperwork has not caught up everywhere.

A 2023 study in Blockchain Research and Applications examined the existing bunker supply process and set out how contracts under English law, the Bunker Delivery Notes and the disputes that follow a stem fit together. The paper argues blockchain could aid bunker dispute resolution precisely because the document trail is where disagreements start (Elsevier).

Regulation has added a second reader to that trail. According to Splash247 (October 2026), the UK Chamber of Shipping has urged the government to avoid repeating the compliance problems seen under FuelEU Maritime as it drafts a domestic maritime fuel standard (Splash247). FuelEU has applied since January 2025.

What the BDN must carry

A compliant BDN identifies the fuel, the quantity, the receiving vessel and the supplier, in a form a verifier can audit without contacting you.

• Receiving vessel: name, IMO number and port of delivery.
• Supplier: registered name and delivery location, matching your invoice entity.
• Product: grade delivered (VLSFO, HSFO, LSMGO, or a named biofuel blend such as B24 or B30) and the quantity in metric tonnes.
• Sulphur content: the measured figure, not the grade's default.
• Date and time: start and completion of delivery, because sampling and metering disputes turn on it.
• Signatures: the supplier's representative and the vessel's authorised officer.

Blended and alternative fuels complicate the product line. According to Hellenic Shipping News (October 2026), Ningbo-Zhoushan saw three bunker vessels supply LNG, methanol and B24 biofuel at the same port on 30 September (Hellenic Shipping News). A BDN that says only "biofuel" leaves the buyer unable to claim anything.

What the certificate of quality adds for reporting

The certificate of quality is the technical evidence behind the BDN. For emissions reporting, the numbers that matter are the ones that convert tonnes into carbon.

Data pointWhy the buyer needs it Density at 15°CConverts volume to mass; underpins the energy calculation Sulphur content (% m/m)ECA and 0.50% cap compliance, and SOx reporting Net calorific valueTurns tonnes into energy for carbon intensity and ETS Water and sediment, viscosity, flash pointOff-spec evidence in a dispute Fatty acid methyl ester content (blends)Supports the renewable share and the emissions factor claimed Fuel oil batch and sample seal numbersTies the certificate to the retained MARPOL sample

Biofuel economics have moved fast enough that these fields now carry real money. According to Hellenic Shipping News (October 2026), Rotterdam's B30-VLSFO premium over conventional VLSFO narrowed by USD 17/mt to USD 174/mt in a week, and Dutch suppliers can generate ZRE A tickets for selling low-carbon fuels (Hellenic Shipping News). A certificate without the blend and FAME figures makes that ticket harder to substantiate.

The commercial case: compliance files travel with the quote

Buyers increasingly judge a bunker quote on whether the supplier can document the stem, because the compliance cost lands months later.

According to Splash247 (October 2026), biodiesel briefly became the cheapest bunkering option in Rotterdam once European carbon costs were factored in, following the energy market upheaval caused by the war in the Middle East, as set out in a white paper from General Index and the London something (Splash247). When carbon cost is part of the price comparison, carbon data is part of the offer.

Alternative fuels raise the same bar. According to Hellenic Shipping News (October 2026), CMB.TECH plans to expand its ammonia-capable fleet to 21 vessels by 2029, with third-party demand needed to underpin terminal viability (Hellenic Shipping News). Every new fuel carries its own certificate fields.

A supplier's pre-quote checklist

1. Confirm the grade and blend actually available at the port before quoting, and name it precisely on the offer.
2. State which certificate of quality parameters you will supply, and when the buyer receives them.
3. Check the receiving vessel's IMO number and registered name against the enquiry, so the BDN matches the buyer's records.
4. Agree the sampling method and seal numbers up front; disputes over retained samples are the expensive ones.
5. Send the BDN and certificate as one file set after delivery, not weeks later when the buyer's verifier asks.

Tight availability makes this sharper. According to Hellenic Shipping News (October 2026), Singapore suppliers are recommending 12 to 15 days' notice for VLSFO, with HSFO tight until November (Hellenic Shipping News). A long lead time is the window to get the documentation right.

How VesselReach helps

Bunker demand forms before the vessel arrives, and the buyer's technical or purchasing superintendent is the person who will check your certificate later. VesselReach gives your team the workflow to reach them first.

• Vessel intelligence: see vessels near your selected ports plus scheduled and expected arrivals, which means you can open a conversation before the stem is fixed elsewhere.
• Decision-maker discovery: find operations, procurement and technical superintendent roles behind each vessel, which means your documentation offer lands with the person who reads it.
• Multichannel outreach and follow-ups: staged email, WhatsApp and phone contact with automated follow-ups, which means a quote and its compliance file reach the buyer while the enquiry is live.

Book a VesselReach demo and see the workflow on your own ports.