Complete Guide to Bunker Supply in Singapore

Short answer: bunker supply in Singapore is delivered by MPA-licensed bunker suppliers using licensed bunker tankers. Quantity is measured by mass flow meter under SS 648, quality must meet ISO 8217, and every delivery is documented on an electronic bunker delivery note. Buyers typically source through a trader or broker, who obtains offers, confirms the stem and coordinates the delivery.

Singapore is the world’s largest bunkering port. That scale gives buyers choice, but it also means the port runs on detailed rules. This guide sets out how the system works, who does what, and what a buyer needs to get right at each stage.

Who is involved in a Singapore bunker delivery

• The buyer: usually the shipowner, the time charterer or the vessel operator, depending on the charter party.
• The trader or broker: sources offers, negotiates terms, confirms the stem and coordinates the parties. A broker arranges a contract between buyer and supplier; a trader sells to the buyer and buys from the supplier.
• The physical supplier: a company holding an MPA bunker supplier licence, which delivers the fuel and issues the bunker delivery note.
• The bunker craft operator: the licensed operator of the bunker tanker. New supplier licensees commit to holding both supplier and craft operator licences.
• The vessel agent: manages the port call and port formalities, and passes delivery information to and from the vessel.
• The bunker surveyor: an independent, MPA-licensed surveyor appointed by the buyer if required.

The rules that shape every stem

Licensing and quality management

The MPA licenses bunker suppliers, bunker craft operators, bunker surveyors and bunker surveying companies. Licensed suppliers must hold a certified quality management system for the bunker supply chain under Singapore Standard SS 524, covering everything from product procurement to delivery. Licences can be suspended or cancelled for breaches, and the MPA has taken action against suppliers in the past, for example over contaminated deliveries.

Mass flow metering

Singapore was the first port to mandate mass flow meters, starting with fuel oil in 2017. Since 1 May 2020, custody transfer to ocean-going vessels has followed SS 648:2019, the Code of Practice for Bunker Mass Flow Metering. The meter on the bunker tanker measures delivered mass directly, which removed most of the disputes that came with tank gauging. Tank-gauged deliveries follow SS 600:2022.

Electronic bunker delivery notes

The MPA launched digital bunkering on 1 November 2023, making Singapore the first port to implement e-BDNs, and bunker suppliers were required to issue them from 1 April 2025. The e-BDN contains the information required by MARPOL Annex VI, including product, quantity, density, sulphur content and the supplier’s declaration. See understanding bunker delivery notes.

Fuel quality

Bunkers supplied in Singapore must meet ISO 8217. The 2024 edition added biofuel grades, while many contracts still refer to the 2017 edition, so the edition must be agreed in writing. See ISO 8217 explained.

Step by step: from enquiry to delivery

1. Enquiry. The buyer sends vessel name and IMO number, ETA, delivery window, location, grade, specification and quantity.
2. Offers. The trader or broker approaches suitable licensed suppliers and presents comparable offers.
3. Confirmation. The buyer accepts an offer in writing, and the stem is confirmed with the terms that apply.
4. Nomination. The supplier receives a nomination and schedules a bunker tanker for the window.
5. Pre-delivery. The agent and vessel are told the supplier, the bunker tanker and the timing. ETA changes are passed on immediately.
6. Delivery. The bunker tanker comes alongside, safety checks are completed, fuel is transferred through the meter and samples are drawn.
7. Documentation. The e-BDN is issued and signed, and samples are sealed and distributed.
8. After delivery. Samples are tested if required, survey reports are reviewed, and the invoice is settled.

What buyers most often get wrong

• Missing the specification edition. “VLSFO 380” is not enough. State the ISO 8217 grade and edition.
• Comparing on price alone. Delivery charges, payment terms and quantity tolerances change the real cost.
• Late ETA updates. The bunker tanker is scheduled around the window. Changes must reach the supplier quickly.
• Signing without checking. Discrepancies must be raised, and a protest issued, before the documents are closed.

How much notice do you need?

For conventional grades, enquiring a few days before arrival gives the widest choice of suppliers and barge slots. Shorter notice is often possible but narrows the options. Biofuel blends, LNG and methanol need considerably more lead time. For short-notice requirements, see how emergency bunker procurement works.

Frequently asked questions

Who can supply bunkers in Singapore?

Only bunker suppliers licensed by the MPA can deliver bunkers to vessels in the Port of Singapore using their own delivery documents. Traders and brokers source from these licensed suppliers.

Is mass flow metering mandatory in Singapore?

Yes. Custody transfer of bunkers to ocean-going vessels must follow SS 648, the Code of Practice for Bunker Mass Flow Metering, mandated by the MPA from 1 May 2020.