Watch: Norwegian Submarine Destroys Decommissioned Frigate in Arctic Warfare Exercise

What’s happening?

During Exercise Ægir 25, the Norwegian diesel-electric submarine KNM Uthaug fired a heavyweight torpedo and struck the decommissioned frigate KNM Trondheim.

The dramatic footage was released by NATO Allied Joint Force Command Norfolk, showing the frigate being torn apart and sinking after the impact.

Strategic Context

The live-fire took place off Andøy, Norway, deep in the Arctic region — underscoring NATO’s emphasis on undersea warfare capabilities in a strategically critical area.

The exercise included participation from Norwegian, British, and Polish forces, highlighting multinational cooperation and interoperability among NATO allies.