TOI World Desk / TIMESOFINDIA.COM / Updated: Mar 05, 2026, 09:31 ISTCommentsAAText SizeSmallMediumLargeMark 48 Torpedo the lethal undersea weapon US used to send Iranian warship at the bottom of the Indian OceanThe United States on Wednesday released a video showing the final moments of the IRIS Dena, a modern Iranian Moudge-class frigate, before it sank in the Indian Ocean.The black-and-white infrared footage captures the moment an American submarine launched a Mark-48 heavyweight torpedo that struck and destroyed the Iranian Navy vessel.According to US officials, the strike killed more than 80 sailors and sent the warship to the bottom of the ocean.The incident marks one of the most dramatic naval moments in the widening crisis in the Middle East.The sinking of the Iranian warship comes as rockets, missiles and drones continue to fly across Israel, Iran and other parts of the region, fuelling fears that the conflict could spiral into a broader regional war.Amid the escalating tensions, attention has turned to the weapon used in the strike, the Mark-48 torpedo, the US Navy’s primary submarine-launched weapon.US defence secretary Pete Hegseth described the strike on the Iranian frigate as a “quiet death,” adding that it marks the first sinking of an enemy ship by a US torpedo since World War II.End of Article