Nazi warship sunk by a British submarine 80 years ago is discovered off the ...

A Nazi warship sank by the British has been found 80 years later, after a power company stumbled across it while inspecting their underwater lines.

The Karlsruhe was returning from the Nazi invasion of Norway in 1940 when it was torpedoed by HMS Truant, forcing the Germans to scuttle the sinking ship.

But while the story of the Karlsruhe is recorded fact, it's location remained a mystery – until now.

Norwegian power company, Statnett, found the vessel after identifying a wreck close to its underwater lines in the strait of Skagerrak.

Nazi warship, the Karlsruhe, (pictured) was returning from the invasion of Norway in 1940 when it was hit by a torpedo from British submarine, the HMS Truant

Nazi warship, the Karlsruhe, (pictured) was returning from the invasion of Norway in 1940 when it was hit by a torpedo from British submarine, the HMS Truant

For 80 years the location of the wreck remained a mystery - until now. It was found off the coast of Norway by a Norwegian power company, Statnett. Pictured: a scan of the wreck

For 80 years the location of the wreck remained a mystery - until now. It was found off the coast of Norway by a Norwegian power company, Statnett. Pictured: a scan of the wreck

'You can find Karlsruhe's fate in history books, but no one has known exactly where the ship sunk,' said Frode Kvalø of the Norwegian Maritime Museum.

'Moreover, it was the only large German warship that was lost during the attack on Norway with an unknown position.

'After all these years, we finally know where the graveyard of this important warship is.'

The existence of a wreck 13 nautical miles from Kristiansand in southern Norway was first revealed by sonar during a Statnett inspection in 2017.

But it wasn't until June this year that Statnett engineer, Ole Petter Hobberstad, was given the chance to inspect the ship, using a remote-controlled submarine.

The existence of a wreck 13 nautical miles from Kristiansand, a city in southern Norway, was first revealed by sonar in 2017, but in June this year an inspection of the ship was carried out that discovered it was the lost Nazi warship

The existence of a wreck 13 nautical miles from Kristiansand, a city in southern Norway, was first revealed by sonar in 2017, but in June this year an inspection of the ship was carried out that discovered it was the lost Nazi warship

Footage of the Karlsruhe, found 490 meters below sea level, shows the ship upright with cannons pointing into the sea (pictured)

Footage of the Karlsruhe, found 490 meters below sea level, shows the ship upright with cannons pointing into the sea (pictured)

'When the ROV results showed us a ship that was torpedoed, we realized it was from the

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