''U-31'' may refer to one of the following
German
German(s) may refer to:
* Germany (of or related to)
**Germania (historical use)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizens of Germany, see also German nationality law
**Ger ...
submarines
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely o ...
:
* , was the lead ship of the
Type U 31 class of submarines; launched in 1914 and served in the
First World War
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
until sunk on 13 January 1915
** During the First World War, Germany also had these submarines with similar names:
*** , a
Type UB II submarine launched in 1915 and sunk on 2 May 1918
*** , a
Type UC II submarine launched in 1916 and surrendered on 26 November 1918
* , a
Type VIIA submarine that served in the
Second World War
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
until sunk on 2 November 1940
* , a
Type 212 submarine
The German Type 212 class (German: U-Boot-Klasse 212 A), also Italian ''Todaro'' class, is a diesel-electric submarine developed by Howaldtswerke-Deutsche Werft AG (HDW) for the German and Italian navies. It features diesel propulsion and an a ...
of the
Bundesmarine that was launched in 2002 and still in service
''U-31'' or ''U-XXXI'' may also refer to:
* , a submarine of the Austro-Hungarian Navy
{{DEFAULTSORT:U-031
Submarines of Germany