TEHRAN, July 12 — The Islamic Revolutionary Guard Corps Navy, a branch of Iran’s military established in 1979, operates as a distinct force from the country’s regular navy. Its mission is not conventional blue-water patrol, but asymmetric warfare in the tight confines of the Persian Gulf and the Strait of Hormuz. Think of it like a smaller, faster, more aggressive squad that doesn’t play by the same rules as the main team.
The IRGC Navy uses fast attack craft, anti-ship missiles, naval mines, and “swarming” tactics — overwhelming a larger enemy with many small, speedy boats. It has roughly 20,000 personnel and operates from bases strung along Iran’s southern coast.
The practical upshot for global shipping and regional security is significant. This force has been involved in multiple incidents, including the seizure of oil tankers in 2019 and 2020. The Strait of Hormuz, a narrow chokepoint, is the passageway for about a fifth of the world’s oil.
The IRGC Navy’s entire doctrine is designed to control or contest that waterway.
Who commands this force?
The IRGC Navy reports directly to Iran’s Supreme Leader, Ayatollah Ali Khamenei, who has held that position since 1989. Its current commander is Rear Admiral Alireza Tangsiri, who was appointed in 2018. This direct line of command means the force answers to the highest political and religious authority in Iran, not the country’s elected president or defense ministry.
The United States has designated the Islamic Revolutionary Guard Corps as a terrorist organization since April 8, 2019. This designation covers the IRGC as a whole, including its navy, and carries significant legal and financial consequences.
It means any person or entity providing support to the IRGC can face US sanctions or prosecution. The IRGC was founded in the wake of the 1979 Islamic Revolution, with its original purpose being to protect the new regime and its ideological interests. Over four decades, it has grown into a vast economic and military empire within Iran, controlling everything from construction projects to oil exports.
Its naval arm remains the sharp tip of the spear for Iranian power projection in the Gulf.
What to watch
With the IRGC Navy focused on asymmetric tactics and the Strait of Hormuz, any escalation in US-Iran tensions typically plays out in these waters. The force’s swarming boats and anti-ship missiles are a constant variable for naval commanders in the region. The question for the rest of 2026 is whether the IRGC Navy will return to its pattern of tanker seizures or attempt new forms of harassment, particularly as diplomatic talks over Iran’s nuclear program remain stalled.
