Malaysia is shocked, shocked to find Iranian-linked tankers slipping through its waters

Key Points:

• Waters near Malaysia’s southern Johor state, specifically the Eastern Outer Port Limits (EOPL) in the South China Sea, have become a key hub for ship-to-ship transfers involving Iran’s “shadow fleet” of aging tankers that conceal the origins of crude oil largely destined for China.
• Since Feb. 28, there have been 42 ship-to-ship transfers of Iranian oil in the EOPL area, according to the U.S.-based advocacy group United Against Nuclear Iran (UANI), which used satellite imagery to track these operations; UANI accuses Malaysia of facilitating illicit activity by not taking stronger enforcement actions.
• Malaysian Maritime Enforcement Agency (MMEA) officials state that transfers often occur outside territorial waters and in remote areas to exploit jurisdictional gaps, and enforcement is challenged by limited real-time intelligence sharing among agencies.
• Despite a U.S. blockade of Iranian ports starting in mid-April, Iranian-linked tankers continue to operate near the EOPL, with two dozen vessels currently anchored or loitering there, indicating ongoing clandestine oil exports.
• Indonesia is reviewing the legality of these activities near its maritime borders, emphasizing it does not permit unlawful use of its territory, while Malaysian authorities have seized vessels involved in unauthorized oil transfers but released them on bond, pledging continued monitoring and cooperation to protect maritime sovereignty.