U-117 may refer to one of the following German submarines:
Germany, officially the Federal Republic of Germany, is a country in Central and Western Europe, lying between the Baltic and North Seas to the north, and the Alps to the south. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, France to the southwest, and Luxembourg, Belgium and the Netherlands to the west.
- SM U-117, a Type UE II submarine launched in 1917 that served in World War I and was surrendered in 1918
- During World War I, Germany also had this submarine with a similar name:
- SM UB-117, a Type UB III submarine launched in 1917 and was surrendered in 1918
SM UB-117 was a German Type UB III submarine or U-boat in the Imperial German Navy during World War I. She was commissioned into the Imperial German Navy on 6 May 1918 as SM UB-117.
The Type UB III submarine was a class of U-boat built during World War I by the German Imperial Navy.
- During World War I, Germany also had this submarine with a similar name:
- German submarine U-117 (1941), a Type XB submarine that served in the Second World War and sank on 7 August 1943
SM U-117 was a Type UE II long-range minelayer submarine of the Imperial German Navy. She was laid down in 1917, at Hamburg, Germany, by Aktiengesellschaft Vulcan and launched on 10 December 1917. She was commissioned in the Imperial German Navy on 28 March 1918, with Kapitänleutnant Otto Dröscher in command. After shakedown, U-117 was posted to the U-Kreuzer Verband on 1 June 1918. Over the next five weeks, she completed fitting out at Kiel.
The Type UE II submarines were a class of submarines built by the German Empire during World War I as long-range mine-layers.
World War I, also known as the First World War or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. Contemporaneously described as "the war to end all wars", it led to the mobilisation of more than 70 million military personnel, including 60 million Europeans, making it one of the largest wars in history. It is also one of the deadliest conflicts in history, with an estimated nine million combatants and seven million civilian deaths as a direct result of the war, while resulting genocides and the 1918 influenza pandemic caused another 50 to 100 million deaths worldwide.
  | This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists. |