An informed source told on Tuesday that the submarines were deployed in international waters together with the dispatch of 14th fleet of warships sent by Iran to the high seas.
The move comes after high-ranking Navy commanders announced preparedness to send submarines to long-term missions.
The source said that Iran's fleet of warships is now in the Red Sea as part of its naval mission.
"Identifying combat vessels of the different world countries, collecting information about sea beds in international waters are among the main tasks of these submarines," the source added.
The Iranian Navy dispatched its 14th flotilla of warships to the Gulf of Aden in May to protect the country's cargo ships and oil tankers against Somali pirates.
The 14th fleet of warships, comprised of IRI Bandar Abbas Warship and IRI Shahid Naqdi Destroyer, is tasked with patrolling and providing security for Iran's shipping lines.
In March, a senior Navy commander of the Iranian Army stressed the need for the Navy to boost its naval deployments outside the country's territorial waters as a strategic force.
"The Navy is in the middle of field and should be present all throughout the world seas," Lieutenant Commander of the Iranian Navy Rear Admiral Gholam-Reza Khadem Biqam said at the time.
Also in March, Commander of Iran's Navy Rear Admiral Habibollah Sayyari announced that the Iranian Navy planned to expand its operational zone far beyond the Persian Gulf and the Sea of Oman in the next Iranian year (started on March 21).
In December, Sayyari said that the country was deploying submarines in the high seas to further boost its military power.
"To become the superior power in the region, we should turn into a regional power in military defense, and we should prove our might and capability not only inside, but also outside the region," he continued.
The Iranian Army Navy and the Islamic Revolution Guards Corps Navy have tight cooperation in controlling the country's waterways and protecting Iran's interests inside territorial waters and in the high seas.
Iran's naval power has even been acknowledged by foes. In a Sep. 11, 2008 report, the Washington Institute for the Near East Policy said that in the two decades since the Iraqi imposed war on Iran, the Islamic Republic has excelled in naval capabilities and is able to wage unique asymmetric warfare against larger naval forces.
According to the report, Iran's Navy has been transformed into a highly motivated, well-equipped, and well-financed force and is effectively in control of the world's oil lifeline, the Strait of Hormuz.