The move aims to make it harder for Iran to sell oil, by far the largest source of foreign currency for the country's ailing economy.
The announcement comes "in response to Iran’s October 1 attack on Israel, its second direct attack on Israel this year", the Treasury’s Office of Foreign Assets Control (OFAC) said.
“Today’s sanctions target Iranian efforts to channel revenues from its energy industry to finance deadly and disruptive activity - including development of its nuclear program, the proliferation of ballistic missiles and unmanned aerial vehicles, and support to regional terrorist proxies,” US Secretary of the Treasury Janet Yellen said in a statement on Friday.
The new sanctions target 10 entities and 17 vessels involved in shipping Iran’s sanctioned oil and petrochemical products, the treasury statement said.
The US State Department also sanctioned six entities and six vessels engaged in the transportation and sale of Iranian oil, the statement added.
A series of US-led sanctions on Iranian oil over the past decade have forced Iran’s government to resort to a network of tankers, often referred to as a shadow fleet, to evade restrictions and continue its oil trade.