Air Defense

IRIS Dena

IRIS Dena is an Iranian Moudge-class light guided-missile frigate built by domestic Iranian shipyards, commissioned in 2021, and sunk by a U.S. submarine in March 2026 during the United States-Iran Conflict.

Conflict side
Iran
Built by
Shahid Darvishi Industries and Naval Factories
Built in
Iran
IRIS Dena, Light guided-missile frigate, Air Defense

Service History

In service
Commissioned into the Iranian Navy in 2021 and later sunk off Sri Lanka in March 2026.
Used by
Islamic Republic of Iran Navy
Wars
United States-Iran Conflict

Production History

Designer
Iranian Navy and domestic shipyards
Designed
Moudge-class development from the 2000s; Dena launched in 2015
Built by
Shahid Darvishi Industries and Naval Factories
Built in
Iran
Unit cost
Unknown
Produced
2012-2015
Number built
1
Variants
Moudge-class frigate

Specifications

Crew
About 140
Displacement
About 1,500 tonnes
Length
About 95 m
Beam
About 11.1 m
Speed
About 30 knots
Propulsion
Two 10,000 hp engines and four diesel generators
Armament
76 mm gun, SAMs, anti-ship missiles, torpedoes, and light guns
Sensors
Asr 3D PESA radar

Conflict Usage

United States-Iran Conflict
Side: IranRole: Naval surface combatant sunk by submarineair defense

United States-Iran Conflict: fielded by the Iranian Navy as a Moudge-class frigate until a U.S. submarine sank IRIS Dena off Sri Lanka on 4 March 2026.

IRIS Dena Images

Related Weapon Systems

Sources