SS Friedenau was a German cargo steamer sunk during World War II.

SS Friedenau was built in 1920 by Ateliers & Chantiers De La Loire, St. Nazaire as a refrigerated cargo steamer for Cie. Française De Navigation À Vapeur Chargeurs Réunis who named her SS Adrar. In 1937 she was acquired by Bugsier-Reederei and renamed Friedenau. While carrying German mountain troops

Gebirgsjäger

Gebirgsjäger, in English Mountain Riflemen, is the German designation for mountain infantry. The word Jäger is the traditional German term for rifleman...

 in support of the German invasion of Norway

Operation Weserübung

Operation Weserübung was the code name for Germany's assault on Denmark and Norway during the Second World War and the opening operation of the Norwegian Campaign...

, SS Friedenau was torpedoed and sunk in the Kattegat

Kattegat

The Kattegat , or Kattegatt is a sea area bounded by the Jutland peninsula and the Straits islands of Denmark on the west and south, and the provinces of Västergötland, Scania, Halland and Bohuslän in Sweden on the east. The Baltic Sea drains into the Kattegat through the Øresund and the Danish...

 by the British submarine HMS Triton

HMS Triton (N15)

HMS Triton was a submarine of the Royal Navy named for the son of Poseidon and Amphitrite, the personification of the roaring waters, was the lead ship of her class. Her keel was laid down on 28 August 1936 by Vickers Armstrong at Barrow-in-Furness. She was launched on 5 October 1937, and...

on April 10, 1940.