Iran Has Lost Every Frigate and Corvette in Its Navy: 30 Hulls Gone in Five Months

The regular Iranian Navy no longer operates a single frigate or corvette. GlobalMilitary.net fleet records attribute 30 Islamic Republic of Iran Navy hulls to the 2026 Iran conflict between February 28 and July 12, 2026, and what remains of the Iranian Navy contains no blue-water surface combatant of any kind.

The 2026 fleet list for Iran carries 105 hulls: 75 active, 28 sunk and two captured. Every frigate and every corvette on it is marked sunk. Seven of the eight frigates were lost in the war; the eighth, IRIS Damavand, ran aground in the Caspian Sea in 2018 and is not a war loss.

The 30 hulls attributed to the conflict break down as follows:

• Nine corvettes, including all five Shahid Soleimani-class missile catamarans and both pre-revolutionary Bayandor-class ships
• Seven frigates, four of the Iranian-built Moudge class and three of the British-built Alvand class
• Four Sina-class fast attack craft
• Four submarines: the Kilo-class attack boat IRIS Taregh, the coastal submarine IRIS Fateh and two Ghadir-class midget submarines
• The Shahid Bagheri drone carrier, the forward base ships IRIS Makran and IRIS Shahid Mahdavi, and the intelligence ship IRIS Zagros
• Two vessels interned abroad: the landing ship IRIS Lavan at Kochi, India, on March 4 and the replenishment ship IRIS Bushehr at Colombo, Sri Lanka, on March 5

The losses were heavily concentrated at the outset. Twenty-two of the 30 hulls were gone within the first 11 days. The opening day of Operation Epic Fury alone accounted for six, struck at the Konarak and Bandar Abbas naval bases, among them the Moudge-class lead ship IRIS Jamaran and the drone carrier IRIS Shahid Bagheri.

Two engagements stand apart from the strikes on moored ships. On March 4 the Moudge-class frigate IRIS Dena, returning from the Indian Navy's MILAN exercise, was torpedoed by a US Navy submarine roughly 20 nautical miles south of Galle, Sri Lanka, the first American torpedo attack on an enemy warship since the Second World War. On March 18 and 19, Israeli strikes on Bandar Anzali destroyed Iran's entire Caspian flotilla, six hulls in two days. The most recent recorded loss came on July 12, when three Corsair unmanned surface vessels destroyed a Ghadir-class boat pier-side at Bandar Abbas.

The 75 hulls still listed as active are almost entirely coastal and logistical: two Kilo-class attack submarines, two Ghadir midgets, 22 patrol craft, 14 landing craft air cushion, nine amphibious ships, 16 auxiliaries and a single minehunter. Iran, ranked 30th in the global military power ranking, retains a navy able to operate in the Gulf and to mine or harass shipping, but not one able to fight a fleet action.

A note on method. These figures cover the regular Islamic Republic of Iran Navy, which GlobalMilitary.net tracks hull by hull. The Islamic Revolutionary Guard Corps Navy and its swarm of small fast boats are a separate force that is not tracked individually here. US officials have cited more than 120 vessels destroyed or incapacitated across both navies, a figure that is not comparable to the 30 named hulls above. Losses are drawn from GMN's own event records, each built from published reporting and, where available, official imagery.

The conflict is not over. Commercial traffic through the waterway continues to be tracked on the Strait of Hormuz monitor, and the air campaign has cost Iran and its opponents a separate tally of aircraft, examined in our earlier analysis of 129 aircraft lost in the Iran war.