Small Iranian “ghost fleet” tankers are slipping past the US naval blockade and smuggling sanctioned liquefied petroleum gas (LPG) to China through a shadowy maritime hub off Malaysia, according to US investigators who covertly filmed one of the vessels en route in September.
United Against Nuclear Iran (UANI), which conducted the months-long probe, said at least nine similar tankers carrying Iranian oil or LPG have also evaded US restrictions in the Strait of Hormuz since Washington reinstated the Iranian port blockade in July.
UANI identified one of the sanctioned tankers as the SOGL. It allegedly escaped the blockade on Sept. 1 carrying approximately 500,000 barrels of Iranian LPG after collecting it at an Iranian port in August.
The vessel then traveled thousands of miles to a Malaysian offshore anchorage, where UANI filmed the vessel receiving fuel and other services offshore.
The ship then traveled on to China, where the organization said it discharged its Iranian cargo.
“This tanker had loaded its Iranian LPG from Assaluyeh Port, Iran, in late August. It then breached the US blockade and made its way to a Malaysian anchorage,” Jemima Shelley, a senior analyst at UANI, explained.
“What this shows us is that some vessels are managing to breach the US maritime blockade,” Shelley said of the footage shared exclusively with Fox News Digital.
“Most vessels aren’t, but since the reinstatement in mid-July, we have seen only nine small tankers being successful in their breach of the US blockade and departing the Gulf of Oman laden with oil or LPG.”
At the center of the operation is the Malaysian Eastern Outer Port Limits Anchorage, known as the EOPL, an offshore shipping area approximately 70 kilometers from Malaysiaâs coastline.
The anchorage has become a critical staging ground for Iranâs sanctioned energy trade with China, Shelley said.
The area allows vessels to wait offshore, receive supplies and transfer cargo between tankers, providing a logistical lifeline for Iranian energy exports as American naval forces patrol waters closer to Iran.
UANI had been monitoring the SOGL before its arrival in Malaysian waters, Shelley explained.
“On September 16th, United Against Nuclear Iran chartered a supply vessel and transited 100 nautical miles into the Malaysian Eastern Outer Port Limits Anchorage,” Shelley said.
“Here we witnessed firsthand the illicit activities of ghost fleet tankers, as well as some Iran-flagged cargo ships that were located in this anchorage, one of them being the SOGL.”
She described the SOGL as “a Handymax small tanker that was laden with 500,000 barrels of Iranian LPG.”
The US maritime blockade was first imposed April 13, temporarily lifted in mid-June and reinstated July 14 after diplomatic negotiations collapsed. The operation has largely stopped Iran from exporting crude oil, depriving Tehran of a major source of revenue as the country faces intense economic pressure.
“The US blockade is an overwhelming success at preventing vessels laden with Iranian oil and petrochemicals from leaving the Gulf of Oman,” Shelley said.
She added that since the blockade was reinstated, “no Iranian crude oil has managed to depart and be a successful export for Iran, which is a huge economic pressure for the Iranian regime.”
“It’s just that there are some opportunistic small tankers that are just managing to breach the blockade.”
The United States, she said, is primarily prioritizing Iranian crude and very large tankers, which often carry “two million barrels of Iranian crude.”
LPG is a flammable mixture of hydrocarbons, primarily propane and butane, used for heating, cooking, transportation and industrial production.
“LPG carries a lot of risks,” Shelley said. “The US blockade’s first course of action is to try to attempt to turn around these vessels, which is their main technique for enforcing the U.S. blockade.”
“However, sometimes they do have to use military force and this would be incredibly high risk on far more volatile cargo such as LPG.”
According to Shelley, the smaller vessels exploit those challenges while using tactics commonly associated with Iranâs ghost fleet.
“So what they’ll do is they will turn off their AIS. They will often fly a false flag so they’re completely stateless vessels,” she added.
Automatic Identification System, or AIS, transponders broadcast a vesselâs identity, position and movements to other ships and maritime authorities. Switching them off can make a vessel more difficult to track.
“Often they will load, and then they will transit the Persian Gulf, the Strait of Hormuz, and then in the Gulf of Oman, they will conduct a ship-to-ship transfer there,” Shelley said, describing it as a “very high-risk ship-to-ship transfer because it’s LPG, not crude oil.”
“And then the other tanker that’s receiving the LPG will then transit and attempt to breach the blockade.”
The overall scale remains relatively small compared with Iranâs historical energy exports.
The SOGL, identified by IMO number 9208227, was added to the US Treasury Departmentâs Office of Foreign Assets Control sanctions list Oct. 8 over its alleged involvement in transporting Iranian petroleum products since 2025.
The vessel has operated under multiple flags, including the Comoros and Zimbabwe, and has been linked in sanctions records to Gravion Maritime Co.
“Most of these tankers are very emblematic of what ghost fleet tankers do and so are flying false flags, which means they’re completely stateless and will have very complicated front companies running them,” Shelley said.
Meanwhile, the EOPL anchorage in Malaysia â roughly a 10-day-to-two-week journey from Iran â has become an important logistical center for Iranian vessels traveling toward Chinese buyers and a “key node in Iran’s oil trade to China,” Shelley said.
“It is used by ghost fleet tankers, Iran-flagged tankers that will load Iranian crude and then transit eastwards from Iran all the way to this anchorage where they will often conduct ship-to-ship transfers with the final tanker bound for China.”
“Often this anchorage is also used for floating storage, which is how Iran managed to survive for so long with the US blockade being reinstated in July,” Shelley said.
She also clarified that since the blockade has been enforced, Iranian floating storage has fallen to “zero to seven million barrels.”
“So you can see how they have survived from having this offshore anchorage where illicit ghost fleet tankers have been able to wait laden with Iranian products.”
UANIâs video also shows the SOGL sitting low in the water and receiving bunkering services from a smaller tanker off Malaysia, where Shelley said authorities appear to be “looking the other way.”
“This is a common thing that you will see in this anchorage, because not only is this anchorage used for ship-to-ship transfers, but also these ghost fleet tankers, as well as some cargo ships in this anchorage, require various services, whether that is food, logistics or bunker fuel.”
China is the dominant destination for Iranian oil and LPG, providing Tehran with a critical economic outlet despite US sanctions and the naval blockade.
“For years, China has made up 80% of Iran’s liquid cargo exports, and we have seen that only grow since the beginning of the Iran War. Now China is importing almost 100% of Iran’s oil and LPG exports.”
“It has created a system and trade that has allowed Iran to avoid sanctions, U.S. and OPEC sanctions, whilst China is able to buy highly discounted Iranian oil and LPG.”
“After United Against Nuclear Iran’s trip to the EOPL, interestingly, this small LPG tanker SOGL did not conduct a ship-to-ship transfer,” Shelley said.
“Instead, it transited northbound into the South China Sea, where it finally discharged its Iranian LPG at Xinzhou Port in China.”
The G Summer, a US-sanctioned LPG carrier with a capacity of approximately 7,000 cubic meters, was also separately tracked transmitting signals from the Arabian Sea beyond the American blockade line in April, according to Bloomberg.
The vessel broadcast a message indicating it had an “all Chinese crew” aboard, while shipping analytics identified Iran as its last cargo country and Galle, Sri Lanka, as its reported destination.
Fox News Digital has reached out to CENTCOM for comment.
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