The Kriegsmarine (ˈkʁiːksmaˌʁiːnə, War Navy) was the name of the German Navy

German Navy

The German Navy is the navy of Germany and is part of the unified Bundeswehr .The German Navy traces its roots back to the Imperial Fleet of the revolutionary era of 1848 – 52 and more directly to the Prussian Navy, which later evolved into the Northern German Federal Navy...

 during the Nazi

Nazi Germany

Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

 regime (1935–1945). It superseded the Kaiserliche Marine

Kaiserliche Marine

The Imperial German Navy was the German Navy created at the time of the formation of the German Empire. It existed between 1871 and 1919, growing out of the small Prussian Navy and Norddeutsche Bundesmarine, which primarily had the mission of coastal defense. Kaiser Wilhelm II greatly expanded...

of World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 and the post-war Reichsmarine

Reichsmarine

The Reichsmarine was the name of the German Navy during the Weimar Republic and first two years of Nazi Germany. It was the naval branch of the Reichswehr, existing from 1918 to 1935...

. The Kriegsmarine was one of three official branches of the Wehrmacht

Wehrmacht

The Wehrmacht – from , to defend and , the might/power) were the unified armed forces of Nazi Germany from 1935 to 1945. It consisted of the Heer , the Kriegsmarine and the Luftwaffe .-Origin and use of the term:...

, the unified armed forces of Nazi Germany.

The Kriegsmarine grew rapidly during German naval rearmaments in the 1930s. In January 1939 Plan Z

Plan Z

Plan Z was the name given to the planned re-equipment and expansion of the Nazi German Navy ordered by Adolf Hitler on January 27, 1939...

 was ordered, calling for the construction of many naval vessels.