Ships Cover for the Duke of Edinburgh and Warrior class first class armoured cruisers HMS Achilles (1905), HMS Black Prince (1904), HMS Cochrane (1905), HMS Duke of Edinburgh (1904), HMS Natal (1905) and HMS Warrior (1905). The documentation mainly comprises gun trial reports, details of defects and reports of remedial action taken, stability calculations, schemes of complement and papers relating to equipping the ship with 'heater torpedoes' in 1909. The earliest papers date from February 1907 and the last October 1931, covering the remainder of the six ships' careers up to the removal of the wreck of HMS Cochrane in the 1930s.