Accumulation of Iranian Crude Carriers Highlights Impact of US Export Restrictions
Recent satellite and AIS data confirm a significant build-up of very large crude carriers (VLCCs) and Suezmax tankers along Iran’s southern coastline, primarily near the Kharg Island and Lavan Island export terminals. Industry analysts interpret the growing queue—now estimated at over two dozen vessels—as clear evidence that the reinstated US maritime sanctions regime is successfully curtailing Tehran’s ability to move crude to international markets.
The vessels, many of which have been stationary for weeks, are understood to be awaiting either fresh loading instructions or revised voyage orders. Market sources report that several charterers have cancelled or deferred liftings in response to heightened compliance risks and the threat of secondary sanctions.
Operational and Financial Implications
The prolonged anchorage period is imposing direct costs on Iranian operators. Demurrage charges, increased hull fouling, and elevated bunker consumption are eroding already thin margins. More critically, the delay in cargo monetisation is tightening liquidity across Iran’s upstream sector, complicating payroll, maintenance, and field-development programmes.
Port authorities at Kharg Island have reportedly introduced extended berthing windows in an attempt to manage the congestion, yet the backlog continues to grow. Industry observers note that the current situation mirrors the 2019–2020 sanctions cycle, when similar queues formed before Iran adopted covert trans-shipment and ship-to-ship transfer tactics in the Gulf of Oman and eastern Mediterranean.
Regional and Market Response
Neighbouring Gulf states are monitoring the situation closely. Saudi Arabia and the UAE have both signalled that they will maintain full compliance with the US-led sanctions framework, ensuring no illicit cargoes transit their territorial waters or pass through regional refining hubs.
On the demand side, Asian refiners—historically the largest buyers of Iranian crude—remain cautious. While some independent teapot refiners in Shandong province have reportedly resumed limited purchases, the volumes are well below pre-sanctions levels. Market participants anticipate that any sustained reduction in Iranian export volumes will tighten medium-sour crude differentials in the coming quarters, particularly if OPEC+ production cuts remain in place.