High Quality Content by WIKIPEDIA articles! HMS Diomede was a Danae class cruiser of the Royal Navy. Constructed at Vickers Armstrong, Barrow, she was constructed too late to take part in World War I and was consequently completed at the Royal Dockyard, Portsmouth. Between the wars, she served on the China Station, Pacific waters, East Indies Waters and from 1936 onwards, in reserve. In World War II she performed four years of arduous war duty, during which time she captured the German blockade runner Idarwald. Between 22 July 1942 and 24 September 1943 she was converted to a training ship at Rosyth Dockyard. In 1945 she was placed in reserve and scrapped a year later.