The German Navy (Deutsche Marine or simply Marine—) is the navy of Germany and part of the unified Bundeswehr ("Federal Defense"), the German Armed Forces.
U 31 was a class of U-boats built during World War I by the Kaiserliche Marine.
The UB II type submarine was a class of U-boat built during World War I by the German Imperial Navy.
Type UC II minelaying submarines were used by the Imperial German Navy during World War I. They displaced 417 tons, carried guns, 7 torpedoes and up to 18 mines.
Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.
A submarine (or simply sub) is a watercraft capable of independent operation underwater.
The German Type 212 class, also Italian Todaro class, is a highly advanced design of non-nuclear submarine developed by Howaldtswerke-Deutsche Werft AG (HDW) for the German and Italian navies.
Type VII U-boats were the most common type of German World War II U-boat.
World War I (often abbreviated as WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.