What is bigger the Grafspree or the Bismarck?
Bismarck, by far. Bismarck was a sister ship of the Tirpitz. Graf Spee had 2 sister ships, the Deutchland & the Admiral Scheer.
The Bismarck was a 2nd World War Battleship not a First World War battleship. You are getting the ship confused with the man: "Otto von Bismarck" after whom the battleship was named. Bismarck was the Minister President of the Kingdom of Prussia, who then became the First Chancellor of the German Empire. To answer your question here's a map of where the Bismarck was sunk. http://www.warcovers.dk/greenland/bismarck_map.jpg