Iran has blacklisted 45 tankers for allegedly violating its rules for transiting the Strait of Hormuz, raising further concerns over the safety and movement of commercial shipping through the strategic waterway. The list was announced by the newly established Persian Gulf Strait Authority, which said the vessels could face penalties for future voyages.

According to reports, the blacklisted vessels include very large crude carriers, LNG and LPG tankers, and clean-product vessels. Ships linked to major operators, including ADNOC Logistics and Shipping, Navig8 Tankers, Saudi Arabia’s Bahri, Klaveness Ship Management, Stolt Tankers, and South Korea’s Sinokor, were among those identified.

Iran warned that the vessels could face fines, detention, or confiscation of their cargoes if they continue to violate its transit requirements. It also said ships involved in ship-to-ship transfers with blacklisted vessels could be added to the list. However, Iranian authorities did not provide specific details on which rules each vessel allegedly violated.

The development comes as tensions remain high in the Strait of Hormuz, a critical route for global energy shipments. Iran has advised cargo owners to check the latest non-compliant vessel list before chartering ships, while vessel operators seeking removal from the list may submit explanations to Iranian maritime authorities. The latest move adds another layer of operational and security risks for seafarers and shipping companies navigating the region.