''U-4'' may refer to one of the following
German
German(s) may refer to:
* Germany, the country of the Germans and German things
**Germania (Roman era)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizenship in Germany, see also Ge ...
submarines
A submarine (often shortened to sub) is a watercraft capable of independent operation underwater. (It differs from a submersible, which has more limited underwater capability.) The term "submarine" is also sometimes used historically or info ...
:
* , was a
Type U 3 submarine launched in 1909 and served in the
First World War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
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 (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
and was stricken in 1944 and scrapped in 1945
* , a
Type 205 submarine
The Type 205 was a class of Germany, German diesel-electric submarines. They were single-hull (watercraft), hull vessels optimized for the use in the shallow Baltic Sea. The Type 205 is a direct evolution of the Type 201 submarine, Type 201 class ...
of the
Bundesmarine
The German Navy (, ) is part of the unified (Federal Defense), the German Armed Forces. The German Navy was originally known as the ''Bundesmarine'' (Federal Navy) from 1956 to 1995, when ''Deutsche Marine'' (German Navy) became the official ...
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