Shadow fleets. Shell companies. Flag swaps.
Sayari follows the oil when sanctions can’t.

Following 2025 maximum pressure sanctions, Sayari Graph reveals common beneficial ownership across multiple sanctioned shadow fleet vessels and undisclosed actors engaged in Iranian oil evasion – through AIS manipulation, ship-to-ship transfers, and flag-swapping across PRC-linked trading networks.

Sanctions EvasionIranOilMaritime

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Unmasking the Iranian Oil Smuggling Shadow Fleet

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In this brief

01 The sanctions landscape
02 Maritime network analysis
03 The onshore infrastructure
04 Why this matters

STS

Ship-to-ship transfers used to obscure Iranian crude origin and evade tracking

PRC

Chinese-linked trading companies providing the onshore corporate infrastructure

AIS

Vessel tracking manipulation – dark voyages concealing Iranian port calls

The sanctions landscape

Iranian crude oil remains among the most heavily sanctioned commodities in global trade. Yet Iran continues to export significant volumes – primarily through a shadow fleet of aging tankers, shell company ownership structures, and ship-to-ship transfers in open water. The 2025 maximum pressure sanctions regime has intensified enforcement, but the evasion infrastructure has evolved in parallel. Understanding the corporate structures behind the shadow fleet is essential for effective sanctions enforcement.

Maritime network analysis

Sayari Graph traces the corporate ownership of vessels involved in Iranian oil transport, revealing shared beneficial ownership structures across multiple sanctioned entities. The investigation documents patterns of AIS manipulation – vessels disabling transponders during Iranian port calls – and ship-to-ship transfers used to obscure the origin of crude oil. Flag-swapping across accommodating registries adds additional layers of obfuscation to the maritime supply chain.

The onshore infrastructure

Behind every shadow fleet vessel is a web of onshore corporate entities: shell companies in UAE, Turkey, and East Asia that provide the commercial front for sanctioned oil trading. Sayari corporate records reveal the common directors, shared addresses, and overlapping ownership structures that connect these entities – exposing the human networks that orchestrate sanctions evasion at scale. PRC-linked trading companies play a central role as both intermediaries and end-buyers.

Why this matters

Iranian oil sanctions evasion is not just a government enforcement problem. Financial institutions processing trade payments, insurers covering maritime cargo, and commodity traders sourcing crude all face exposure to sanctions risk from shadow fleet operations. This investigation demonstrates how corporate registry data and trade records can identify the onshore infrastructure behind maritime evasion – enabling compliance teams to screen for exposure before it becomes an enforcement action.

How Sayari helps

Sayari’s Commercial World Model covers 10.6B+ primary-source records across 250+ jurisdictions. The platform resolves entity identities, traces ownership chains, and delivers evidence-grade intelligence that enables analysts to conduct investigations like this one at scale – from corporate registries and trade manifests to beneficial ownership records and sanctions lists.

FREQUENTLY ASKED QUESTIONS

Unmasking the Iranian Oil Smuggling Shadow Fleet FAQ

This investigation brief demonstrates how Sayari’s trade data and corporate records reveal hidden networks related to sanctions evasion. Using primary-source records across 250+ jurisdictions, Sayari analysts trace corporate ownership, trade flows, and financial relationships to identify entities and connections that standard analysis misses.

Sayari Graph connects corporate registration data across jurisdictions to reveal shared ownership, common directors, and overlapping addresses that link apparently independent entities into coordinated networks. This cross-jurisdictional corporate analysis is essential for investigations involving sanctions evasion because the entities involved deliberately use multi-jurisdictional structures to obscure their connections.

Sayari investigation briefs draw on the Commercial World Model, which covers 10.6B+ primary-source records including corporate registrations, trade manifests, beneficial ownership filings, intellectual property records, and sanctions lists across 250+ jurisdictions. Every finding is traceable to a primary government or regulatory source.

Complete the form on this page to download the full investigation brief as a PDF. The brief includes detailed analytical methodology, source citations, and network diagrams that demonstrate the full scope of the investigation. For a live demonstration of how Sayari Graph enables these investigations, request a briefing from our analytics team.

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Shadow fleets. Shell companies. Flag swaps.Sayari follows the oil when sanctions can’t.