France Boards and Diverts Shadow-Fleet Tanker 450 Nautical Miles South of Réunion; Russia Calls It “Piracy”
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French naval forces intercepted and boarded the 110,119-dwt tanker DF Peak on October 12 more than 450 nautical miles south of Réunion in the Indian Ocean after authorities questioned the validity of the vessel's claimed Benin flag. France says the boarding was conducted under Article 110 of the UN Convention on the Law of the Sea to verify the ship's nationality; investigators aboard subsequently found irregularities in its flag documentation, after which the Saint-Denis prosecutor ordered the tanker diverted toward an anchorage off Réunion. A judicial investigation has been opened over the master's failure to establish the ship's nationality, while its 21-person multinational crew remains aboard. The DF Peak, IMO 9341067, is the former Sovcomflot tanker NS Captain/Kaliningrad and is sanctioned by the United States, European Union and United Kingdom. Russia's embassy in France responded on October 13 by calling the action a violation of international law and an act of “piracy.” France has not yet confiscated the vessel; confiscation is one potential penalty under the French investigation now underway.
France Did Not Wait for DF Peak to Enter a European Port
The tanker was intercepted hundreds of miles into the Indian Ocean. The critical legal trigger was not simply that the ship was sanctioned. France says the trigger was reasonable suspicion that its claimed flag was not valid.
South of Réunion. The Saint-Denis prosecutor subsequently described the boarding point as nearly 500 nautical miles offshore.
The Enforcement Chain
DF Peak was displaying the flag of Benin, but French authorities had grounds to question whether the vessel was entitled to use it.
French naval personnel boarded to verify the vessel's nationality under the high-seas right-of-visit provisions of UNCLOS.
France says examination of the vessel's documents confirmed doubts about the regularity of the flag being flown.
The Saint-Denis prosecutor was notified and ordered the tanker escorted toward an anchorage off Réunion for investigation.
UNCLOS Article 110 allows a warship to visit a foreign merchant vessel on the high seas when there are reasonable grounds for specified suspicions, including that the ship is without nationality. A suspected fraudulent flag can therefore become the legal doorway for checking the ship's status.
The tanker is listed under U.S., EU and UK Russia-related sanctions. Those designations establish restrictions on the vessel but are distinct from the Article 110 basis France says it used to conduct the boarding.
Large crude/product tanker built in South Korea.
Constructed by Hyundai Heavy Industries in Ulsan.
Approximately 42 metres in beam.
Multinational crew currently being kept aboard.
The IMO number remains constant through name and flag changes.
Russia's embassy in France called the diversion a blatant violation of international law and described it as “piracy.” It also said France had not notified Russia and was trying to determine whether Russian nationals were among the crew.
DF Peak: The IMO Number Tells a Different Story Than the Flag
Names, owners and flags can change. The IMO number does not. Tracking IMO 9341067 connects today's DF Peak to a long Sovcomflot history and multiple sanctions designations.
Kaliningrad
| Item | Current / Historical Detail | Date | Significance | Status |
|---|---|---|---|---|
| U.S. Sanctions | OFAC designated the vessel as NS Captain, IMO 9341067, linking it directly to Sovcomflot. | Feb. 23, 2024 | The IMO number keeps the sanction attached despite later name and flag changes. | Designated |
| EU Vessel Listing | Listed as Kaliningrad under the EU's shadow-fleet vessel restrictions. | June 25, 2024 | Subject to EU port-access and maritime-service restrictions. | Listed |
| UK Sanctions | UK identified Kaliningrad, IMO 9341067, as involved in transporting Russian-origin oil or petroleum products to third countries. | July 21, 2025 | UK restrictions include port and movement measures. | Designated |
| Ownership Record | Ukrainian intelligence databases identify Hong Kong Ding Feng Shipping as registered owner and Zheng Xin Marine as manager from June 2025. | June 19, 2025 | French prosecutors say ownership and operating control are now subjects of their own investigation. | Under Inquiry |
| Flag History | Liberia → Gabon → Russia → claimed Benin. | 2006-2026 | Rapid flag transitions are relevant because the current prosecution centers on whether the tanker can establish a valid nationality. | Flag Disputed |
| French Boarding | Naval boarding team inspected vessel documentation on the high seas south of Réunion. | Oct. 12, 2026 | France says onboard examination confirmed doubts over the regularity of the displayed flag. | Article 110 |
| Judicial Investigation | Investigation opened for failure by the master to establish the vessel's nationality during a sea inspection. | Oct. 13, 2026 | Potential penalties include imprisonment, a €300,000 fine and possible confiscation. | Ongoing |
Boarding off France's Atlantic coast becomes the first in the current sequence of French shadow-fleet nationality cases.
Grinch, Deyna, Tagor and Deliver are boarded in the Mediterranean and Atlantic over suspected flag irregularities.
Tagor is stopped more than 400 nautical miles west of Brittany, demonstrating that operations are no longer confined near French territorial waters.
France conducts its sixth disclosed boarding in the current series deep in the Indian Ocean south of Réunion.
The EU said in July 2026 that more than 670 vessels were already subject to its shadow-fleet vessel measures. The DF Peak operation illustrates a separate enforcement route: instead of relying only on port bans and service restrictions, states can examine a vessel on the high seas when a valid Article 110 jurisdictional trigger exists.
High-Seas Boarding Authority Explorer
Article 110 does not create a general power to stop any suspicious ship. Select the facts present in a scenario to see whether one of UNCLOS's specified right-of-visit triggers exists.
The suspected flag problem supplies the relevant trigger
In this preset, sanctions status does not create the boarding authority. The potentially relevant Article 110 basis is reasonable suspicion that the vessel cannot establish a valid nationality. The warship may verify the ship's right to fly its flag and conduct a further examination if doubts remain.
Article 110 addresses whether a warship can approach, verify papers and conduct an onboard examination in the listed circumstances.
Those are separate legal steps. They depend on what the inspection establishes plus applicable international law, treaties and domestic jurisdiction. In the DF Peak case, France says the prosecutor ordered diversion after the flag irregularity was confirmed.
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