World War 2 Navy Comparison — Fleets Evolution 1939–1946

Effective Radar Systems

On the brink of World War II, the emergence of effective radar systems, as well as the development of submarines and carrier-borne aviation, drastically changed the nature of naval warfare. Even the most innovative doctrines became hopelessly obsolete on the battlefields of the new war.
 
Credit to : World of Warships Official Channel