Sanctioned Iranian LPG Tanker Breaches U.S. Blockade to Deliver Cargo to China

Key points

• The SOGL (IMO 9208227) loaded 500,000 barrels of Iranian LPG at Assaluyeh Port in late August and breached the U.S. blockade on September 1.
• The vessel was filmed by United Against Nuclear Iran (UANI) at the Eastern Outer Port Limits (EOPL) anchorage off Malaysia on September 16 before sailing to China.
• The U.S. Treasury sanctioned the SOGL on October 8 as part of a broader action against 17 shadow fleet vessels, citing its transport of over two million barrels of Iranian propane/butane since September 2025.
• UANI reports that only nine small tankers carrying Iranian LPG have successfully passed the blockade since its reinstatement in July, while no crude oil tankers have breached it since July 12.
• China now accounts for nearly 100% of Iran’s oil and LPG exports, up from approximately 80% in previous years, serving as the primary destination for sanctioned energy shipments.

Background

The U.S. naval blockade on Iranian ports was first imposed in April 2026, temporarily lifted in June, and reinstated on July 14 after diplomatic negotiations collapsed. This follows a period of intense economic pressure on Tehran, where Iran exported over $16 billion worth of oil in the first half of 2026. Recent enforcement actions include the French Navy seizing the tanker DF Peak in the Indian Ocean in October 2026 and Sri Lanka repatriating 40 Iranian sailors from blocked vessels in late October 2026, highlighting the complex humanitarian and logistical challenges of the blockade.

How outlets are covering it

UANI and Fox News emphasize the success of the blockade in halting crude oil exports, noting that no crude tankers have breached the line since July 12, while acknowledging that small LPG tankers occasionally slip through. They highlight the use of 'ghost fleet' tactics, such as turning off AIS transponders and flying false flags, to evade detection. In contrast, WANA News Agency reports on a very large crude carrier arriving in China with 2 million barrels, suggesting that some crude shipments may still be reaching Chinese ports despite UANI’s claims of a complete blockade on crude. This discrepancy highlights differing interpretations of satellite data and the effectiveness of the blockade across different vessel types and cargo types.

Why it matters

The ability of sanctioned Iranian tankers to deliver LPG to China undermines the economic pressure intended by the U.S. blockade, providing Tehran with critical revenue. The reliance on Chinese buyers for nearly 100% of Iran’s liquid cargo exports creates a significant geopolitical dependency, complicating U.S. efforts to isolate Iran economically. The use of Malaysian anchorage as a staging ground also raises questions about regional enforcement and the potential for further sanctions evasion through third-party jurisdictions.

What to watch

The U.S. Treasury is expected to continue sanctioning shadow fleet vessels involved in transporting Iranian energy products. UANI and other monitoring groups will likely increase surveillance of the EOPL anchorage in Malaysia to track further breaches. China may face increased diplomatic pressure to enforce sanctions against Iranian energy imports, while Iran may continue to rely on small LPG tankers to maintain revenue streams. The effectiveness of the blockade in halting all Iranian energy exports remains a key point of contention between U.S. officials and independent trackers.