Japan imposes first sanctions on 35 Russian shadow fleet tankers to cut oil export revenue.

The Japanese government formally imposed its first direct vessel sanctions against 35 ships linked to the Russian shadow fleet, targeting 3.37 million deadweight tonnage of oil tankers and cargo vessels involved in wartime energy logistics. The economic measures enforce a strict government permission requirement for maritime services, vessel repairs, insurance, and financing to constrain Moscow's petroleum revenue. This action expands G7 multilateral enforcement models by designating permanent International Maritime Organization hull numbers to prevent evasion through reflagging.

The October 2, 2026 sanctions package designates 31 crude and petroleum product tankers alongside four general cargo and Ro-Ro ships, while extending asset freezes to 33 Russian entities and nine individuals. Additionally, the restrictions penalize third-country intermediary firms in Turkey and the UAE to close secondary logistical channels supporting Russian trade.

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The effects of the sanctions grow when Japanese restrictions overlap with EU, UK, or U.S. measures because the same IMO number then faces exclusion from several major maritime, insurance, and financial markets simultaneously. (Picture source: UK MoD)

On October 2, 2026, Japan imposed its first sanctions against individual vessels linked to the Russian shadow fleet, placing 35 ships involved in oil exports or other maritime logistics during the war in Ukraine under restrictions. Intended to constrain Russia's oil revenue and maritime logistics, the list comprises 31 crude oil or petroleum product tankers totaling 3.33 million DWT and four Ro-Ro or general/heavy-cargo ships totaling 37,018 DWT, for 3.37 million DWT across all 35 vessels. The tankers range from the Trust (46,564 DWT) to the Respect (158,096 DWT), while five ships exceed 150,000 DWT. Japan designated permanent IMO numbers rather than names, allowing restrictions to follow ships through renaming, reflagging or ownership changes. Maritime transport, pilotage, repairs, insurance, seafarer recruitment and dispatch, plus loans and debt guarantees linked to sale, purchase, lease or charter, are now subject to permission. The package also added 33 Russian entities and nine individuals to asset-freeze measures and prohibited exports to four entities in Turkey and the UAE, extending Japanese sanctions directly to the ships and services supporting Russian maritime trade.

The 31 tankers cover several capacity classes, which is important because the list affects several parts of the Russian petroleum transport chain. Saga (IMO 9318553) and Serenade (IMO 9318541) each reach 46,941 DWT, Solaris (IMO 9333436) 47,095 DWT and Trust (IMO 9382798) 46,564 DWT, while Premier (IMO 9577082) and Garnet (IMO 9577094) reach 74,581 and 74,548 DWT. Most of the tankers fall between 104,000 and 116,000 DWT, including Kemerovo (IMO 9312884) at 104,999 DWT, Krasnoyarsk (IMO 9312896) at 109,819, DF Peak (IMO 9341067) at 110,119, Soufia 1 (IMO 9273052) at 105,850, Carma (IMO 9341081) at 109,908, Celt (IMO 9299692) at 109,919, Integrator (IMO 9436941) at 105,309, Jagger (IMO 9354301) at 106,820, Jasmine (IMO 9354313) at 104,542, Evelina/Amber 6 (IMO 9235713) at 105,109, Syndra (IMO 9321976) at 105,495, and Camel (IMO 9341079) at 110,066 DWT. Primavera (IMO 9511533), Mirabel (IMO 9511521), Lavender (IMO 9339337) and Areia (IMO 9321847) raise that range to 113,860, 113,867, 115,849 and 115,567 DWT, while Nomad (IMO 9610781) and Georgy Maslov (IMO 9610793) reach 122,039 and 122,018 DWT, showing that Japan is restricting capacity spanning across product tankers, medium-size crude carriers and substantially larger crude carriers.

The five largest tankers account for 778,677 DWT, or 23.4% of the sanctioned tanker capacity: Komander (IMO 9271585) at 150,581 DWT, Lynx (IMO 9412347) at 156,630, Bond (IMO 9412335) at 156,838, Zodiak (IMO 9513139) at 156,532 and Respect (IMO 9422445) at 158,096. These ships are 274-275 m long and 48 m wide, placing substantial crude-carrying capacity in individual hulls. The age profile is broader than the usual image of a shadow fleet composed exclusively of ageing tankers: most vessels date from 2003-2012, but Vladimir Vinogradov and Okeansky Prospect were built in 2022 and provide 112,960 and 112,651 DWT respectively. Both measure 250 × 44 m, adding 225,611 DWT of relatively new Russian tanker capacity to the sanctions list. Japan is therefore targeting both old tankers nearing the end of their normal commercial lives and relatively new Russian ships delivered during the period immediately preceding or coinciding with Russia's wartime restructuring of its oil transportation system. Moreover, at least six of the 35 Russia-linked vessels sanctioned were built in Japanese shipyards, including five crude oil tankers (Soufia 1 in 2003, Komander in 2004, Areia in 2006, Syndra in 2007 and Integrator in 2010) and the cargo ship Lev Yashin in 1986.

The ships' identity histories explain why Japan used IMO numbers. Kemerovo previously operated as NS Columbus, Krasnoyarsk as NS Creation, DF Peak as Kaliningrad and NS Captain, Solaris as Success and SCF Amur, Respect as Sirius and SCF Surgut, Carma as Cassiopeia and NS Clipper, Celt as Callisto and NS Concord, Bond as Bolero and NS Bora, and Camel as Capella and NS Corona. Primavera previously operated as Rigel and Primorsky Prospect, Mirabel as Moskovsky Prospect and Nomad as Zenith and Nikolay Zuyev. Several ships also shifted among Russian, Omani, Beninese, Mozambican, Panamanian, and other registries. These are not simply cosmetic changes when sanctions compliance systems, insurers, charterers, banks, and port authorities screen commercial identities, because a new name can initially separate a vessel's current commercial presentation from its earlier Russian or Sovcomflot identity. The IMO number closes much of that gap:: IMO 9422445 remains the same hull through the SCF Surgut-Sirius-Respect sequence, just as IMO 9341081 remains the same tanker through NS Clipper-Cassiopeia-Carma.

Four ships differ fundamentally from the 31 tankers and broaden the purpose of the Japanese action beyond Russian petroleum exports. Angara (IMO 9179842) is a 126.84 m Ro-Ro/general cargo ship with 7,331 DWT; Lev Yashin, formerly Maria (IMO 8517839), is a 113 m general cargo ship with 9,340 DWT; Lady R (IMO 9161003) is a 122.11 m Ro-Ro with 7,630 DWT; and Maia-1 (IMO 9358010) is a 138.04 m general/heavy cargo vessel with 12,717 DWT. Together, they represent only 37,018 DWT, or 1.1% of the 35 ships' combined deadweight, but their Ro-Ro and heavy cargo configurations permit movement of vehicles, machinery, containers, and other equipment rather than petroleum. Russia used Angara, Maria, Lady R and Maia-1 to transport containers from North Korea to Russia, according to Japan's Multilateral Sanctions Monitoring Team, which also recorded prolonged AIS interruptions and limited P&I insurance or inspection records among these vessels. Their inclusion means Japan is targeting both oil shipping and a separate maritime route associated with Russia-North Korea logistics.

The sanctions do not automatically remove 3.33 million DWT of tanker capacity from Russian service. Instead, from October 2, 2026, a Japanese resident or company that wants to provide one of the covered services (transport, pilotage, repair, insurance, crewing) to a designated vessel must first obtain government permission. The same permission requirement applies to money loans and debt guarantees connected with the vessel's sale, purchase, lease or charter. Contracts signed before October 2 receive an exemption only when the relevant obligations are completed before November 1, giving existing counterparties less than one month to complete qualifying transactions. Operators can replace Japanese providers with companies elsewhere, but doing so requires alternative insurers, financiers, repair facilities, crewing companies or charter counterparties. The effect becomes larger where Japanese restrictions overlap with EU, UK or U.S. measures because the same IMO number then faces exclusion from several major maritime, insurance and financial markets simultaneously.

Russia's shadow fleet is intended to reduce precisely this dependence on G7-controlled shipping services, particularly insurance and finance, while maintaining crude and petroleum-product exports. Japan's 31 tankers represent only a fraction of a network commonly estimated between 800 and 1,000 vessels, but their 3.33 million DWT includes 778,677 DWT concentrated in five 150,000-plus-DWT ships, so losing access to services for one large tanker has a different commercial effect from sanctioning a smaller product carrier. Vessel sanctions have consequently shifted from targeting companies toward targeting individual hulls, because companies, names and flags can be changed more easily than IMO numbers. The EU had already sanctioned Angara and Maria by IMO number in June 2024, and its vessel restrictions had expanded to hundreds of ships by 2026. Japan's October decision therefore adds another major maritime and financial jurisdiction to a sanctions model intended to force Russian operators to repeatedly replace insurance, ownership, management, flags and other commercial relationships without being able to erase the history of the underlying hull.

The October 2026 decision represents another expansion of Japan's sanctions after Russia's February 2022 full-scale invasion of Ukraine. Tokyo initially concentrated on individuals, companies, banks, payments, controlled technology and exports, later joined the G7 oil-price-cap mechanism, and reduced its Russian seaborne crude ceiling from $60 to $47.60 per barrel in September 2025, a 20.7% cut. The October 2026 package adds 33 Russian entities and nine individuals, including companies connected with drones, machinery, electronics and defense production, while export restrictions extend to Turkey-based Solid Tarim Inovasyon Anonim Sirketi and UAE-based Amegino FZE, Auto Parts East FZCO and MOTO Export DWC LLC. That change does not by itself stop Russian petroleum shipments, particularly because Moscow has access to hundreds of alternative tankers and non-G7 service providers, but it adds Japan to the jurisdictions attempting to narrow that alternative network vessel by vessel. Russia has already signaled that the decision will have bilateral consequences, with Foreign Ministry spokeswoman Maria Zakharova saying on October 5 that Moscow would take proportionate countermeasures in areas of interest to Japan.

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Written by Jérôme Brahy

Jérôme Brahy is a defense analyst and documentalist at Army Recognition. He specializes in naval modernization, aviation, drones, armored vehicles, and artillery, with a focus on strategic developments in the United States, China, Ukraine, Russia, South Korea, Türkiye, and Belgium. His analyses go beyond the facts, providing context, identifying key actors, and explaining why defense news matters on a global scale.