Key figures

  • US$3.5bnowed to creditors by Singapore oil trader Hin Leong, according to its interim judicial managers in June 2020.Manifold Times
  • 58import letters of credit tied to Hin Leong export contracts that were presented to 15 banks and "not supported by any underlying sale transaction".GTR
  • US$111.6 millionfinancing HSBC was deceived into disbursing to Hin Leong on two fabricated oil sale contracts.Malay Mail
  • 40 bankssupporters of the duplicate financing check run by Singapore's Trade Finance Registry, which had handled more than 18,000 queries by February 2025.ABS
  • 20 September 2023the date from which electronic trade documents, including bills of lading, became legally recognised in the UK.GOV.UK; legislation.gov.uk

What is document fraud in oil trading?

Physical oil is bought, sold and financed on paper. UK law lists the bill of lading (B/L) among the documents commonly used in trade and its financing [1]. Banks pay against documents such as the B/L, inspection certificates and a certificate of origin, not against oil they have seen, as our guide to letters of credit in oil trading explains. A fake bill of lading, or a genuine one used twice, can therefore unlock real money for a cargo that does not exist or already belongs to someone else.

Document fraud in oil trading takes four broad forms:

  • Forgery: documents fabricated from scratch, such as bills naming a vessel that does not exist [2].
  • Unauthorised issue: genuine-looking bills issued by parties with no authority from the carrier or master [3].
  • Duplication: the same cargo used to raise finance from several banks [4,5].
  • Phantom cargo: documents for oil that was never loaded, or inventory that was never there [6,7].

How are bills of lading and certificates forged or misused?

The most convincing fakes come as a complete set. In 2007 the ICC International Maritime Bureau (IMB) examined documents for a sulphur shipment from a Baltic port to China. They met the letter of credit's terms, yet the named vessel did not exist. The inspection certificates had not been issued by any known surveyor in the region, and the certificate of origin had not come from the chamber of commerce it named. The IMB's director called the documents "very convincing" [2].

Other bills are real paper issued by the wrong people. The Standard Club, now part of NorthStandard, described a receiver holding a "clean" B/L issued by unauthorised agents "for and on behalf of the master". It warned that an intermediate seller that had not paid for a cargo, and so lacked the original bill, might issue its own fraudulent bills to sell it [3].

Duplication is harder to spot because each document can look normal. Hin Leong's interim judicial managers described one vessel's cargo of 780,000 barrels of diesel being used in three parallel deals in early 2020, involving Unipec, Glencore, Trafigura and several banks. The bills "bear the same vessel name and aggregate cargo", differing only in date [7]. In the Agritrade case, lender ING alleged in court filings that the company issued multiple B/Ls for the same shipment to obtain financing from several banks [5].

Certificates of origin are a further target. In November 2024 the UK Office of Financial Sanctions Implementation (OFSI) warned that fabricated or falsified certificates can be used to disguise Russian-origin oil. Its red flags include a certificate naming a country that does not normally export the product, several versions for one shipment with different companies or signatories, and identical details across shipments [8].

Lessons from real commodity trade-finance fraud cases

Hin Leong. In April 2020 the Singapore trader's founder, Lim Oon Kuin, disclosed more than US$800mn of unreported losses and that oil pledged as collateral had been sold [7]. In June its interim judicial managers, from PwC, told the High Court that it owed about US$3.5bn to creditors [6]. They found forged bank statements, bills of lading, sales contracts, invoices and deal settlement slips, saying the company had "fabricated documents on a massive scale" [4]. A group company, Ocean Tankers, chartered the vessels and supplied supporting documents, which made discrepancies hard to detect [7]. In November 2024 Lim was sentenced to 17½ years for cheating HSBC and abetting forgery; in March 2026 the High Court cut the term to 13½ years on appeal [9].

Winson Oil. In 2024 Singapore's Court of Appeal ruled on letters of credit for a circular gasoil trade between Hin Leong, Trafigura and Winson. Winson presented letters of indemnity (LOIs) based on copy bills of lading, which the court agreed were not valid because Hin Leong staff, not the master or an agent, had signed them. Its red flags included LOIs used although all parties were in Singapore, a carrier "essentially owned and controlled by Hin Leong", missing loading documents, and a quantity revised after sailing without an amended loading certificate. It found it "most telling that there was no independent inspector appointed", held that Winson had acted recklessly, and ruled that it could not compel the banks to pay [10].

Hontop and Sugih. In 2020 CIMB alleged that it issued letters of credit worth just over US$70mn for a crude sale naming BP as buyer, and that BP said it had no record of a contract; Natixis made a similar allegation [4].

Documents can match each other and still be false, and confirmation from parties linked to the seller adds little. No bank can see what others have financed, which is why 14 banks led by Standard Chartered and DBS were building a registry in 2020 to flag cargoes financed more than once [4].

How to verify a bill of lading

  1. Check who signed it. It should be signed by or for the carrier or the master. Ask whether the carrier is linked to the seller [10].
  2. Ask the carrier, owner or agent directly, using contacts you find yourself. Owners are not obliged to reply, and Gard advises them to confirm or deny only what the requester already holds [11].
  3. Use an independent service. The IMB authenticates bills of lading by making "a number of independent checks with the parties named on documents and others", and offers vessel reports [12].
  4. Check the vessel, but know the limits. A background check would have shown that the ship in the 2007 case did not exist [2]. Automatic identification system (AIS) tracking shows where a ship was, but in Winson, checks confirming the vessels' locations and that they were laden did not prove the financed cargo had been loaded [10].
  5. Match every data point — vessel, dates, port, quantity and consignee — across the bill, certificates, invoice and emails [10].
  6. Insist on originals. Requiring the original bill at discharge helps prevent these frauds [3].
  7. Use registries. Singapore's Trade Finance Registry, launched in June 2023, checks for duplicate financing. In February 2025 it added a real-time B/L genuineness check using carrier data, an alternative to manual checks by phone or email [13].

How to verify an inspection certificate

Ask the inspection company, not the seller. SGS offers a free service to verify SGS-branded documents, "ensuring they are genuine before you rely on them for any purpose" [14]. That is the first step for anyone holding a possible fake SGS certificate. SGS has also rolled out a blockchain-based "Secured Document" feature, mainly for agricultural reports, which gives each document a unique digital hash that users can check online [15].

Then test the certificate against the facts. Confirm that the surveyor exists and works at the stated load port; in the 2007 case it did not [2]. Where possible, appoint your own independent inspector, the step missing in Winson, and require an amended loading certificate for any change in quantity [10].

For certificates of origin, OFSI recommends checking official certificates through the ICC's online tool where it applies, requesting every copy issued for the shipment, and verifying the issuer with national maritime and customs authorities. Two or more red flags should trigger increased due diligence [8].

Can electronic documents reduce fraud?

The shipping association BIMCO says paper bills are "vulnerable to fraud and human error". In March 2023 it launched a "25 by 25" pledge for bulk shippers to move 25% of their seaborne volume of at least one commodity onto electronic bills of lading (eBLs) by 2025 [16].

UK law supports the shift. Electronic trade documents became legal from 20 September 2023 under the Electronic Trade Documents Act 2023 [17]. A qualifying electronic document has the same effect as its paper equivalent, provided a reliable system distinguishes it from any copies, protects it against unauthorised alteration and ensures that no more than one person can control it at any one time [1]. Those tests address the copying and duplication seen in the cases above.

Electronic bills are not a cure-all. The International Group of P&I Clubs said shipowners' cover for paperless trading applies only to systems it has approved, ten of them by September 2023 [18]. An eBL shows who controls the document, not what is in the tanks; as one source told GTR, a system without independent validation from buyers cannot guard against fraudulent sales invoices [4].

Checklist for buyers and banks

  • Confirm the B/L and its signatory with the carrier, master or agent, using contacts you source yourself, and check whether the carrier is linked to the seller [10,11].
  • Confirm the vessel exists and was at the load port, remembering that AIS shows position, not cargo or title [2,10,12].
  • Verify inspection certificates with the issuer, and appoint your own inspector [10,14].
  • Check certificates of origin with the issuing authority, and ask for every version [8].
  • Reconcile quantities, dates, ports and consignees across all documents [10].
  • Question LOIs offered in place of originals that should be easy to obtain [3,10].
  • Query duplicate financing registries where they exist [13].
  • Prefer eBLs on legally recognised, P&I-approved platforms [1,18].
  • Confirm with the named end-buyer that the contract exists [4].

Alupetra supports document verification and counterparty due diligence on oil, LPG and LNG trades from its Istanbul, London and Dubai offices.

Sources

  1. legislation.gov.uk — Electronic Trade Documents Act 2023 (c. 38), as enacted (20 July 2023). legislation.gov.uk (opens in a new tab)
  2. ICC — IMB uncovers fake chemical shipments (21 December 2007). iccwbo.org (opens in a new tab)
  3. NorthStandard — Web alert: Fraudulent bills of lading (27 January 2015). north-standard.com (opens in a new tab)
  4. GTR — Facing up to fraud, John Basquill (2 November 2020). gtreview.com (opens in a new tab)
  5. GTR — Analysis: Little hope for banks caught up in Agritrade collapse (2020). gtreview.com (opens in a new tab)
  6. Manifold Times — PwC investigations uncover mass grave of financial skeletons and alleged fraud within HLT (24 June 2020). manifoldtimes.com (opens in a new tab)
  7. GTR — Analysis: Hin Leong's "vicious cycle" of trade finance fraud (2020). gtreview.com (opens in a new tab)
  8. GOV.UK (OFSI) — Oil Price Cap (OPC) advisory: evasion linked to product origin manipulation through fabricated and falsified certificates of origin (21 November 2024). gov.uk (opens in a new tab)
  9. Malay Mail — Singapore's Hin Leong founder OK Lim has jail term cut after High Court appeal (4 March 2026). malaymail.com (opens in a new tab)
  10. Supreme Court of Singapore — Winson Oil Trading Pte Ltd v Oversea-Chinese Banking Corp Ltd and another appeal [2024] SGCA 31 (21 August 2024). elitigation.sg (opens in a new tab)
  11. Gard — Third party requests for verification of bills of lading and other shipping documents (26 March 2015). gard.no (opens in a new tab)
  12. ICC Commercial Crime Services — IMB due diligence services (accessed October 2026). icc-ccs.org (opens in a new tab)
  13. Association of Banks in Singapore — Trade Finance Registry and SGTraDex further strengthen trade finance risk mitigation with real-time bill of lading genuineness check (12 February 2025). abs.org.sg (opens in a new tab)
  14. SGS — Verify SGS documents (accessed October 2026). sgs.com (opens in a new tab)
  15. SGS — SGS Secured Document rolls out globally (17 May 2022). sgs.com (opens in a new tab)
  16. BIMCO — BIMCO launches campaign to accelerate uptake of electronic bills of lading (16 March 2023). bimco.org (opens in a new tab)
  17. GOV.UK — UK economy to receive £1 billion boost through innovative trade digitalisation act (20 July 2023). gov.uk (opens in a new tab)
  18. Skuld — IG statement: The UK Electronic Trading Act comes into force today (20 September 2023). skuld.com (opens in a new tab)

This article is for information only and is not investment, legal or trading advice. Figures are as reported by the sources cited on the date of publication.