IRIS Dena

IRIS Dena (75) (Persian: ناوشکن دنا) was a Moudge-class frigate in the Southern Fleet of the Islamic Republic of Iran Navy. She was named after Mount Dena, and was commissioned into the navy in 2021. She was sunk on 4 March 2026 during the 2026 Iran war by the Los Angeles-class submarine USS Charlotte of the United States Navy in international waters near the southern coast of Sri Lanka. She was the only ship to be sunk in active combat by a submarine since 1982, when the Argentine Navy cruiser ARA General Belgrano was sunk by torpedoes from the Royal Navy nuclear submarine HMS Conqueror during the Falklands War, and the only to be sunk by an American submarine since the Pacific theater of World War II.

Signals are a current-state view: a flag clears once the vessel stops tripping its detector. These are screening indicators, not a substitute for your own due diligence.