Navy of the Army of the Guardians of the Islamic Revolution

The Navy of the Army of the Guardians of the Islamic Revolution or Revolutionary Guards' Navy consists of 20,000 men and 1,500 boats and fast attack boats separate and in parallel to the regular Navy of Iran.

It is also known to operate helicopters in support of maritime operations.

Watercraft

 * Thondar Class Missile Boats (10)
 * IPS-18 Tir Class Torpedo Boats (10)
 * IPS-16 Peykaap Class Zolfaghar Torpedo Boats (10)
 * Boghammar Patrol Boats
 * Zodiac Commando Boats
 * Type Seraj Speedboats Missile & Torpedo Boats (12), based on the Bladerunner 51 speedboat

Aircraft

 * Mil Mi-17 Helicopter
 * Bavar 2 Ground effect vehicle

Coastal Anti-Ship Missiles

 * Noor, based on the Chinese C-802
 * Kowsar, based on the Chinese C-701
 * Kowsar, based on the Chinese TL-10
 * Nasr-1, based on the Chinese TL-6
 * HY-2 Silkworm

Facilities
It is believed that the IRGC's Navy has facilities on the following islands:
 * Farsi Island
 * Sirri Island
 * Abu Musa
 * Larak Island

Notable operations
On 21 June 2004, eight sailors and Royal Marines were seized by forces of the Revolutionary Guards' Navy while training Iraqi river patrol personnel in the Persian Gulf.

On 23 March 2007, fifteen sailors and Royal Marines from HMS Cornwall were seized by forces of the Revolutionary Guards' Navy in the Persian Gulf.
 * Iranian boats 'harass' U.S. Navy

On 7 January 2008, US officials claimed five Iranian speedboats 'harassed' US navy vessels in the Persian Gulf. IRGC speedboats made threatening moves and in one case even came within 180 meters of US warships. The U.S. Navy claims to have also received a radio transmission from Iranian boats saying: "I am coming at you. You will explode in a couple of minutes". After this US ships were said to have taken up their gun positions and were ready to open fire at one of the boats when the Iranians turned away and one of the Iranian speedboats (allegedly) dropped white boxes into the water in front of the U.S. ships, it was not clear what was in the boxes. Iranian officials and military commanders later downplayed the incidents as normal and denied to have sent those radio transmissions. After the US released a video showing Iranian speedboats swarming US ships in the Strait of Hormuz, Iran released their own video of the incident after suggesting the US video was staged.