Shadow fleet · Sanctioned vessels and enablers

Tracks designations of 'shadow fleet' vessels —the opaque tanker network moving sanctioned crude from Russia, Iran and Venezuela— and of their enablers: ship managers, insurers, flag registries and terminals. Each entry documents the authority (EU, OFAC, UK's OFSI), the measure's scope (port and maritime-services bans, asset freezes, seizure) and the verifiable outcome. It includes new legal frameworks, such as mandatory due diligence on tanker sales (Art. 3q, Reg. 833/2014) and the legal bases for boardings and seizures.

Snapshot · June 12, 2026

632

vessels designated by the EU

↑ +46 vessels in the 20th package (Reg. 2026/506/509/511) to 632; Art. 3q debuts mandatory due diligence on tanker sales; the UK is the largest single-country designator and is preparing a legal basis for military seizures; no new OFAC Russia/Iran vessel designations since January 2025; fleet estimated at over 1,300 ships

Evolution

Documented events (5)

January 10, 2025 US confirmed

US · OFAC designates 180+ tankers in the largest shadow-fleet action; subsequent pause

In January 2025, the outgoing Biden administration designated more than 180 shadow-fleet tankers in a single tranche, within the G7 commitment to intensify enforcement. Since then, and through mid-2026 reporting, OFAC has added no new designations of Russian or Iranian vessels under the Trump administration, whose Russia-sanctions policy remains in flux; U.S. enforcement has stayed operationally active mostly against Venezuela. The contrast with intensifying European action defines the sector's risk map.

Ukraine War Analytics — Russia Shadow Fleet March 2026 ↗

January 11, 2026 GB reported

UK · Legal basis in preparation for military seizure of shadow-fleet tankers

As reported by the BBC on January 11, 2026, the UK is preparing to authorize military seizures of shadow-fleet tankers suspected of evading oil sanctions on Russia, Iran and Venezuela. Ministers identified a domestic legal basis in the Sanctions and Anti-Money Laundering Act 2018, whose 'shipping sanctions' clauses allow detaining or controlling the movement of specified vessels, those without legitimate registration or those controlled by designated persons — interpretable, per the Government, as enabling Royal Navy boardings with air-surveillance support and, if authorized, special-forces teams. The UK is already the single country that has sanctioned the most fleet vessels; per Bloomberg, 39 of 41 vessels sanctioned only by the UK kept transporting Russian crude, the effectiveness figure motivating the leap to physical interdiction.

Army Recognition (cita BBC) — UK to authorize military seizure of shadow fleet tankers ↗ Ukrainska Pravda (vía Yahoo) — UK imposes sanctions on 100 oil tankers ↗

May 5, 2026 EU confirmed

EU · 20th package: 632 vessels designated, mandatory due diligence on tanker sales (Art. 3q) and bans on Murmansk, Tuapse and Karimun

The EU's 20th sanctions package (Regulations 2026/506 and 2026/511, and Implementing Regulation 2026/509) added 46 vessels to the port- and maritime-services ban list, raising the total to 632 vessels designated over irregular or high-risk shipping practices tied to Russian energy exports, military-equipment transport or stolen Ukrainian grain. It introduces for the first time due-diligence obligations on tanker sales by EU persons (new Art. 3q of Reg. 833/2014): a ban on selling or transferring tankers to Russian persons or for use in Russia, and, for third-country buyers, a proportionate onward-transfer risk assessment plus a written contractual no-Russia clause. It adds transaction bans on the Russian ports of Murmansk and Tuapse and the Karimun oil terminal (Indonesia), and keeps under study a broad maritime-services ban that, if adopted, would push Russian exports entirely onto the shadow fleet, already estimated at over 1,300 ships.

Herbert Smith Freehills Kramer — Sanctions Tracker: EU's 20th package ↗ Shipfinex — Shadow Tanker Fleet 2026: Size, Ships & Sanctions ↗

December 18, 2025 EU confirmed

EU · 41 more vessels (total ≈600), nine enablers listed and rolling monthly designations

The EU added 41 vessels to its shadow-fleet sanctions list, bringing the total to nearly 600 vessels sanctioned for transporting crude, arms or stolen Ukrainian goods from occupied territories. The decision followed the listing of nine fleet enablers and a declaration by the EU and its member states to fully use the law-of-the-sea framework against these threats and protect critical undersea infrastructure. The Council announced it will keep designating vessels on a rolling monthly basis; affected ships are barred from EU ports and essential maritime services.

Global Trade & Sanctions Law — EU sanctions a further 41 vessels ↗ Safety4Sea — EU sanctions more Russian vessels ↗

May 20, 2025 EU confirmed

EU · 17th package: 189 vessels at once (total ≈350) and enabling insurers in the UAE, Turkey and Hong Kong

The EU agreed sanctions against 189 ships of Russia's shadow fleet, raising the total to nearly 350 vessels, with asset freezes and travel bans on Russian officials and firms, and —a structural novelty— designations of insurers in the UAE, Turkey and Hong Kong enabling the fleet's operations. In parallel, the UK unveiled 100 new sanctions against military- and energy-support entities, including 18 additional ships. The action marked the shift toward financial and insurance enablers, not just hulls.

AP (vía MarketBeat) — New EU and UK sanctions target Russia's shadow fleet ↗

Methodology

Type: event-log
Construction: Multi-source verified
Cadence: event-driven

Sources consulted

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