The US Treasury Department has sanctioned 17 vessels and several companies linked to Iran’s shadow fleet for transporting Iranian crude oil, petroleum products and petrochemicals to Asian markets. The measures, announced under Operation Economic Outcast, aim to curb Iran’s oil revenues and restrict its access to international financial and commercial networks.
Treasury said the targeted vessels had transported millions of barrels of Iranian oil and related products. The move intensifies pressure on Iran’s petroleum exports following the US blockade of Iranian ports.
According to a Treasury official, Iran has about 20 million barrels of crude remaining on vessels outside the blockade, while sanctions have disrupted crude loading and unloading operations. Two vessels were removed from the sanctions list after leaving the shadow fleet and being sold to non-sanctioned operators.
Among the vessels targeted was the Vanuatu-flagged Tina 5, which Treasury said had transported more than 1.5 million barrels of Iranian crude oil in August.
The Comoros-flagged Sogl transported over 2 million barrels of Iranian propane and butane since September 2025, while the Cameroon-flagged Shenzen carried more than 3.5 million barrels of crude since November 2025, according to the department.
Further information is available at:
https://home.treasury.gov/news/press-releases/sb0653/