The United States has added eight tankers and three Iranian petrochemicals traders to its sanctions regime.

The US State Department announced on Thursday the addition of eight tankers and companies linked to their operation to the sanctions regime targeting Iran . The published list covers product tankers and crude oil tankers, with flags identified as Palau, the Marshall Islands, Panama, the Comoros, Cameroon and San Marino .

The same announcement also targets three traders in petrochemical products of Iranian origin . According to Maritime Executive, the State Department refers to a trader based in Qatar, a Singapore-based company described as having exported more than 900,000 dollars of Iranian petrochemical products, and an India-based trader described as having imported around 54.6 million dollars of Iranian petrochemical products .

In parallel, the US Treasury announced sanctions against an oil sales network that had facilitated the movement of tens of millions of barrels of Iranian oil . According to the Treasury, the funds were channelled to the Islamic Revolutionary Guard Corps, the General Staff of the Iranian Armed Forces and the Iranian military apparatus . Scott Bessent said: "We will not allow the Iranian government to increase its oil revenue for the purpose of reconstituting its armed forces and military capabilities" .

Flags, managers and companies cited in the sources.

The US State Department said it had added eight tankers and the companies involved in their operation, as well as three energy-sector traders, in the sanctions package described by Maritime Executive . The vessels cited include product tankers and crude oil tankers . The same source refers to flags ranging from Palau to the Marshall Islands, Panama, the Comoros, Cameroon and San Marino .

The sanctions are also extended, according to Maritime Executive, to ship managers based in Hong Kong and the United Arab Emirates, as well as to a shipping company registered in the Marshall Islands . The Jerusalem Post, citing the Treasury Department, states that the eight sanctioned vessels were involved in transporting Iranian crude oil and petroleum products to global markets . It specifically cites the tanker Flora, flying the Marshall Islands flag, the crude oil tanker Hauncayo, flying the Comoros flag, and the tanker Ill Gap, flying the Panamanian flag .

Three Iranian petrochemicals traders are cited.

The US State Department announced on Thursday the addition of three traders in petrochemical products of Iranian origin to its sanctions regime, according to Maritime Executive . The article cites a trader based in Qatar, without publishing its name or the value of the flows attributed to it .

The same source refers to a Singapore-based company described as being involved in the export of more than 900,000 dollars of Iranian petrochemical products . It also cites an India-based trader described as having imported around 54.6 million dollars of Iranian petrochemical products .

The available file does not provide the names of the three traders, nor details of the products, counterparties or trading periods used for the published amounts . Maritime Executive attributes those elements to the US State Department .

The US blockade and the Strait of Hormuz in the sources.

The maritime element cited by Maritime Executive links the new US sanctions to the maintenance of a blockade targeting Iranian ports . CENTCOM stated that, as of 29 May, 115 commercial vessels had been redirected so that no trade entered or left Iranian ports . TankerTrackers.com estimated that nearly 60 million barrels of Iranian crude were blocked by the US Navy, representing nearly 6 billion dollars in oil revenue not received by Tehran .

Associated Press, as reported by Politico, states that a Gambia-flagged bulk carrier, the Lian Star, ignored several warnings from US forces before being disabled by US aircraft in the Gulf of Oman . The vessel remained adrift and US forces had not boarded it, according to a US official cited anonymously by AP . Politico states that this action brought to six the number of vessels stopped by the US military during attempts to breach the blockade, including one that was allowed to continue its voyage .

AP dispatches carried by Greenwich Time, HuffPost and Ynet state that separate US sanctions target Iran's Persian Gulf Strait Authority and any person or entity co-operating with that agency . Those same reports attribute to the agency the approval of transits through the Strait of Hormuz and the collection of fees of up to 2 million dollars per vessel .