Shipping sources and tanker tracking data showed over the past three months Iran had deployed at least 15 very large crude carriers (VLCCs), each capable of carrying 2 million barrels, to store oil.
Iran is storing as much as 40 million barrels of oil on supertankers at sea as it prepares for a sales drive if a nuclear deal can be sealed.
In the meantime, Iran has been parking oil off its coast, mainly on tankers belonging to its national carrier NITC.
Global Geopolitics 