Global & US Headlines

US Sub Torpedoes Iranian Frigate IRIS Dena off Sri Lanka, 87 Dead

On 5 March 2026 a U.S. nuclear attack submarine sank Iran’s Moudge-class frigate IRIS Dena in international waters south of Sri Lanka, killing at least 87 crew and marking Washington’s first acknowledged submarine combat sinking since 1945.

By Underlines Team

Focusing Facts

  1. Sri Lanka’s navy retrieved 87 bodies and rescued 32 sailors after receiving the Dena’s distress call at 5:08 a.m. local time; roughly 60 of the 180-person crew are still missing.
  2. Defense Secretary Pete Hegseth said the strike used the “Quiet Death” heavyweight torpedo, calling it the first U.S. torpedo kill of an enemy surface vessel since World War II.
  3. The Dena was returning from India’s MILAN 2026 fleet review with 74 participating navies and lay about 3,000 km from Iran—but only 30 hours from the U.S. base at Diego Garcia—when it was hit.

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Perspectives in this article

  • Australian mainstream media
  • South Asian regional outlets
  • Chinese state-owned media
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