The exercise covers an area from the eastern parts of the Strait of Hormuz to the northern parts of the Indian Ocean and parts of the Red Sea, state television reported. About a fifth of oil that is consumed globally passes through the strategic Strait of Hormuz waterway in the Gulf.
Periodic confrontations have taken place between Iran's military and U.S. forces in the Gulf since 2018, when former U.S. President Donald Trump exited the nuclear pact and reimposed harsh sanctions against Tehran.
Iran has reacted by breaching the deal's limits on its nuclear programme.
Indirect talks between Iran and U.S. President Joe Biden's administration to revive the pact, which were put on hold since the election of Iran's hardline President Ebrahim Raisi in June, are set to resume in Vienna on Nov. 29.