TEHRAN — May 11, 2026 : Iran has deployed additional Ghadir-class midget submarines in the Strait of Hormuz as maritime tensions with the United States continue in the strategically important waterway, according to an announcement made on May 10, 2026, by Iranian Navy Commander Shahram Irani.
The deployment was confirmed during a naval exercise conducted in memory of personnel lost aboard the Iranian frigate IRIS Dena, which was sunk on March 4, 2026, in the Indian Ocean off the coast of Sri Lanka. Iranian officials stated that the vessel was struck by two Mark-48 torpedoes launched by the U.S. Navy submarine USS Charlotte, resulting in the deaths of 104 crew members.
During the memorial exercise, several Ghadir-class submarines surfaced in formation in the Strait of Hormuz before submerging and returning to patrol operations. Iranian naval command internally refers to the submarine force as the “dolphins of the Persian Gulf.”
Strategic Operations in the Strait of Hormuz
The deployment highlights Iran’s continued focus on asymmetric maritime warfare and sea-denial operations in the confined waters of the Persian Gulf and Strait of Hormuz.
The Strait of Hormuz remains one of the world’s most important maritime chokepoints, with navigable shipping lanes narrowing to less than four kilometers in each direction in some sectors. Average water depths in operational areas range between 30 and 60 meters, conditions that favor the use of smaller coastal submarines over larger conventional attack submarines.
Iranian naval planners have designed the Ghadir-class specifically for operations in shallow-water environments where high salinity, suspended sediment, rapid thermal-layer changes, tidal shifts, and complex seabed terrain reduce the effectiveness of sonar detection systems.
Military analysts have frequently compared the operational role of midget submarines in littoral waters to previous regional naval incidents, including the 2010 sinking of the South Korean corvette Cheonan, which demonstrated the effectiveness of small submarines in congested maritime environments.
Ghadir-Class Fleet and Capabilities
The Ghadir-class submarine entered operational service in 2007 and represents the largest segment of Iran’s submarine inventory. Current estimates place the fleet between 14 and 20 operational vessels, although some U.S. assessments indicate Iran may have lost approximately 11 midget submarines during military operations earlier in 2026.
Built by Iran’s Marine Industries Organization, the diesel-electric submarines measure 29 meters in length with a beam of 2.75 meters. Each vessel displaces approximately 117 tons surfaced and 125 tons submerged and operates with a crew of seven personnel.
The submarines are primarily assigned to Iran’s Southern Fleet operating from naval facilities around Bandar Abbas. Iranian sources indicate that older vessels, including Ghadir 942, remain in service following modernization and overhaul programs alongside newer boats such as Ghadir 955.
Despite their compact size, the submarines carry significant weapon systems. Each vessel is equipped with two 533 mm torpedo tubes capable of launching Valfajr heavyweight torpedoes and Hoot supercavitating torpedoes. The class is also integrated with the Jask-2 submarine-launched cruise missile system, which is launched from a torpedo casing before surfacing and igniting its flight engine. The missile is reported to have a strike range of approximately 35 kilometers.
Shallow-Water Ambush Tactics
Unlike conventional blue-water submarines designed for extended patrols, the Ghadir-class is optimized for short-duration ambush operations and rapid deployment missions in coastal waters.
Iranian naval officials state that the submarines can transition from port to combat-ready operational status within approximately 30 seconds. One of the class’s defining operational methods is the “bottom rest” tactic, in which submarines shut down propulsion systems entirely and settle on the seabed for extended periods.
By remaining stationary in areas with dense commercial shipping traffic and high underwater acoustic clutter, the submarines reduce both acoustic and magnetic signatures, making detection by conventional anti-submarine warfare systems more difficult.
Rear Admiral Shahram Irani stated that the submarines remain deployed and on alert in the Strait of Hormuz based on operational requirements, threat assessments, and mission readiness conditions. The deployment further strengthens Iran’s sea-denial capability in one of the world’s most strategically significant maritime corridors.
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