Alfred von Tirpitz in the context of "Imperial German Navy"

The High Seas Fleet (German: Hochseeflotte) was the battle fleet of the German Imperial Navy and saw action during the First World War. In February 1907, the Home Fleet (Heimatflotte) was renamed the High Seas Fleet. Admiral Alfred von Tirpitz was the architect of the fleet; he envisioned a force powerful enough to challenge the Royal Navy. Kaiser Wilhelm II, the German Emperor, championed the fleet as the instrument by which he would seize overseas possessions and make Germany a global power. By concentrating a powerful battle fleet in the North Sea while the Royal Navy was required to disperse its forces around the British Empire, Tirpitz believed Germany could achieve a balance of force that could seriously damage British naval hegemony. This was the heart of Tirpitz's "Risk Theory", which held that Britain would not challenge Germany if the latter's fleet posed such a significant threat to its own.

The primary component of the Fleet was its battleships, typically organized in eight-ship squadrons, though it also contained various other formations, including the I Scouting Group. At its creation in 1907, the High Seas Fleet consisted of two squadrons of battleships, and by 1914, a third squadron had been added. The dreadnought revolution in 1906 greatly affected the composition of the fleet; the twenty-four pre-dreadnoughts in the fleet were rendered obsolete and required replacement. Enough dreadnoughts for two full squadrons were completed by the outbreak of war in mid-1914; the eight most modern pre-dreadnoughts were used to constitute a third squadron. Two additional squadrons of older vessels were mobilized but later disbanded.

The arms race between Great Britain and Germany that occurred from the last decade of the nineteenth century until the advent of World War I in 1914 was one of the intertwined causes of that conflict. While based in a bilateral relationship that had worsened over many decades, the arms race began with a plan by German Admiral Alfred von Tirpitz in 1897 to create a fleet in being to force Britain to make diplomatic concessions; Tirpitz did not expect the Imperial German Navy to defeat the Royal Navy.

With the support of the Kaiser Wilhelm II, Tirpitz began advancing a series of laws to construct an increasing number of large surface warships. The construction of HMS Dreadnought in 1906 prompted Tirpitz to further increase the rate of naval construction. While some British observers were uneasy at German naval expansion, alarm was not general until Germany's naval bill of 1908. The British public and political opposition demanded that the Liberal government meet the German challenge, resulting in the funding of additional dreadnoughts in 1910 and escalating the arms race.