German is. Submarine is not. "A German submarine surfaced in the North Sea."
The name U-boat was applied to German submarines.
German submarine U-A was created in 1939.
A German submarine was called a U-boat which was short for Unterseeboot (undersea boat). The Kriegsmarine did not name the submarines, but simply numbered them (like U-47, for instance). +++ They are still called Unterseeboot, or U-boot.
Lusitania wasn't a German submarine, it was an American merchant ship that was sunk by German submarines.
German submarine Deutschland was created on 1917-02-19.
This policy was called unrestricted submarine warfare
German submarine swere and are known as U-Boote, an abbreviation of Unterwasserboot, which translates literally as underwater boat
It was the German way of saying "submarine" which properly should be called a "submersible." It is a shortening of "unterseeboot" to just uboat.
Unterseeboot is German for submarine.
German submarine Wilhelm Bauer ended on 1968-08-28.
German submarine Wilhelm Bauer was created on 1945-02-24.