The US Navy's sea blockade against Iran appears to be working.Iran-linked or sanctioned vessels that have left the Persian Gulf through the Strait of Hormuz have stopped or turned around, shipping data firms say.

They appear to have jammed or faked their locations in some instances, complicating an uncertain and risky shipping situation.

The blockade that started Monday "has been fully implemented," said Adm. Brad Cooper, head of US Central Command."US forces have completely halted economic trade going in and out of Iran by sea."

The action could put serious pressure on the Iranian economy, while Tehran's earlier cutoff of the waterway crucial to oil and gas supplies has sent energy prices higher during the war with the US and Israel.

Here are key things to know about the blockade and the situation at the Strait of Hormuz:The blockade is being enforced "impartially against all vessels of all nations entering or leaving coastal areas or ports in Iran," US Central Command said. Vessels avoiding Iranian ports are not affected.

The military set up the blockade in the Gulf of Oman beyond the Strait of Hormuz, a US official said.The official, who spoke on condition of anonymity to discuss sensitive military operations, said the strategy is to observe vessels subject to the blockade leave Iranian facilities and clear the strait before intercepting them and forcing them to turn around.

Source:Ndtv