Bismarck-class battleship
The Bismarck-class was a pair of fast battleships built for Nazi Germany's Kriegsmarine shortly before the outbreak of World War II. The ships were the largest and most powerful warships built for the Kriegsmarine; displacing more than 41,000 metric tons normally, they were armed with a battery of eight 38 cm (15 in) guns and were capable of a top speed of 30 knots. Bismarck was laid-down in July 1936 and completed in September 1940, while the keel of her sister ship, Tirpitz, was laid in October 1936 and work finished on February 1941. The ships were ordered in-response to the French Richelieu-class battleships, themselves laid-down in-response to the Italian Littorio-class battleships. The Bismarck-class was designed with the traditional role of engaging enemy battleships in home waters in mind, though the Oberkommando der Marine envisioned employing the ships as long-range commerce raiders against British shipping in the Atlantic Ocean. As such, their design represented the strategic confusion that dominated German naval construction in the 1930s.
Bismarck underway near Blankenese in 1940
The French battleship Richelieu in Dakar in 1940; the Bismarck-class battleships were ordered to counter Richelieu
Recognition drawing prepared by the US Navy
Bismarck in drydock, showing the three-shaft arrangement
A fast battleship was a battleship which in concept emphasised speed without undue compromise of either armor or armament. Most of the early World War I-era dreadnought battleships were typically built with low design speeds, so the term "fast battleship" is applied to a design which is considerably faster. The extra speed of a fast battleship was normally required to allow the vessel to carry out additional roles besides taking part in the line of battle, such as escorting aircraft carriers.
HMS Queen Elizabeth, the first "fast battleship" of the Dreadnought era, in 1918
French battleship Dunkerque
USS Missouri, among the last "fast battleships", would serve until 1992
Figure 1. Concept that maneuverability and armament were more important than speed. A slower ship with larger guns could render a speedier ship's advantage moot.