What were the Royal Navy Battleships, that were considered the first fast battleships and were used in WWI and WWII?
HMS Warspite (03) HMS "Warspite" was a "Queen Elizabeth"-class battleship built for the Royal Navy during the early 1910s. Her thirty-year career covered both world wars and took her across the Atlantic, Indian, Arctic and Pacific Oceans. She participated in the Battle of Jutland during the First World War as part of the Grand Fleet. Other than that battle, and the inconclusive Action of 19 August, her service during the war generally consisted of routine patrols and training in the North Sea.
HMS Repulse (1916) HMS "Repulse" was a "Renown"-class battlecruiser of the Royal Navy built during the First World War. Originally laid down as an improved version of the "Revenge"-class battleship s, her construction was suspended on the outbreak of war because she would not be ready in a timely manner. Admiral Lord Fisher, upon becoming First Sea Lord, gained approval to restart her construction as a battlecruiser that could be built and enter service quickly. The Director of Naval Construction (DNC), Eustace Tennyson-D'Eyncourt, quickly produced an entirely new design to meet Admiral Lord Fisher's requirements and the builders agreed to deliver the ships in 15 months. They did not quite meet that ambitious goal, but the ship was delivered a few months after the Battle of Jutland in 1916. "Repulse", and her sister HMS "Renown" , were the world's fastest capital ships upon completion.