Tirpitz was the second of two Bismarck-class battleships built for Nazi Germany's Kriegsmarine (navy) during World War II. Named after Grand Admiral Alfred von Tirpitz, the architect of the Kaiserliche Marine (Imperial Navy), the ship was laid down at the Kriegsmarinewerft Wilhelmshaven in November 1936 and her hull was launched two and a half years later. Work was completed in February 1941, when she was commissioned into the German fleet.