HMS_Dreadnought in May 1905, approved for construction.December 3, 1907, service, and served as flagship of the British Royal Navy's Home Fleet until 1912. March 18, 1916 in the First World War, and without fear in the North Sea sank the German U-29 submarine docking maintenance missed Jutland. 1916-1918year deployed to patrol the Thames estuary. Transferred to the Reserve in 1919. 1921 sale demolished. HMS_Dreadnought represent an important watershed in battleship technology, commonly known of its kindas "dreadnoughts", before the battleship called "pre-dreadnoughts”.