Joint Force Command Norfolk
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NATO Allied Joint Force Command Norfolk (JFCNF) posted footage on Tuesday, Nov. 18, of Norwegian submarine KNM Uthaug torpedoing the decommissioned warship KNM Trondheim
The exercise, which took place in the North Sea, saw the ship blown to pieces
The purpose of the exercise was to "demonstrate the striking power that the weapon and the submarine represent," the JFCNF shared
NATO Allied Joint Force Command Norfolk (JFCNF) posted dramatic footage on Tuesday, Nov. 18, of Norwegian submarine KNM Uthaug torpedoing the decommissioned warship KNM Trondheim and destroying the ship in an exercise.
The action was taken as part of the Aegir 25 exercise, which took place off the coast of Andfjorden, a fjord in Norway.
"Recently, during exercise Ægir 25, submarine KNM Uthaug 🇳🇴fired one of its torpedoes at the decommissioned frigate [warship] KNM Trondheim, with the aim of sinking the vessel," JCNFwrote on X.
Submarine Saturday - in association with Torpedo Tuesday! 💥Recently during exercise Ægir 25, submarine KNM Uthaug 🇳🇴fired one of its torpedoes at the decommissioned frigate KNM Trondheim 🇳🇴, with the aim of sinking the vessel.The purpose of the shot was to verify and…pic.twitter.com/HUtk62mkgA
— NATO Allied Joint Force Command Norfolk - JFCNF (@JFCNorfolk)November 15, 2025
The purpose of the exercise was to "demonstrate the striking power that the weapon and the submarine represent," the organization shared. "A submarine has long endurance, operates covertly, and has a unique ability to dictate the battle," the company stated.
In the video footage shared, blasts of seawater are seen shooting up several feet high into the air as the submarine takes its shot at the warship. The ship then turns on its side due to the impact and is seen half-submerged at the end of the clip, and subsequently sinks to the bottom of the ocean.
The Forsvaret (Norwegian Armed Forces), the British Royal Navy and Poland participated in the exercise, according to JCNF.
Joint Force Command Norfolk
The North American-based organization is an operational-level command part of the NATO Military Command Structure under Allied Command Operations, responsible for the protection of the trans-Atlantic link and the Arctic, per the company'swebsite.
The latest development comes after the Royal Navy reached another milestone during Aegir 25 of the first operational firing of the Naval Strike Missile (NSM) from HMS Somerset in September.
The missile launch was executed to demonstrate the "strong bilateral cooperation between the U.K. and Norway," the Royal Navy said in apress release.
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"I am very proud of the team following the successful first-of-class firing of the Naval Strike Missile," Matt Millyard, Commanding Officer of HMS Somerset, said.
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