''U-4'' 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 a
Type U 3 submarine launched in 1909 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 ...
as a training submarine; scrapped in 1919
** During the First World War, Germany also had these submarines with similar names:
*** , a
Type UB I submarine launched in 1915 and sunk on 15 August 1915
*** , a
Type UC I submarine launched in 1915 and scuttled on 5 October 1918
* , a
Type IIA 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 ...
and was stricken in 1944 and scrapped in 1945
* , a
Type 205 submarine
The Type 205 was a class of German diesel-electric submarines. They were single- hull vessels optimized for the use in the shallow Baltic Sea. The Type 205 is a direct evolution of the Type 201 class with lengthened hull, new machinery and senso ...
of the
Bundesmarine
The German Navy (, ) is the navy of Germany and part of the unified ''Bundeswehr'' (Federal Defense), the German Armed Forces. The German Navy was originally known as the ''Bundesmarine'' (Federal Navy) from 1956 to 1995, when ''Deutsche Mari ...
that was launched in 1962 and scrapped in 1974
''U-4'' or ''U-IV'' may also refer to:
* , a
''U-3'' class submarine of the Austro-Hungarian Navy
{{DEFAULTSORT:U-0004
Submarines of Germany