第二次ロンドン海軍軍縮会議
The term "capital ship" was first coined in 1909 and formally defined in the limitation treaties of the 1920s and 1930s in the Washington Naval Treaty, London Naval Treaty, and Second London Naval Treaty. This applied mainly to ships resulting from the dreadnought revolution; dreadnought battleships (also known first as dreadnoughts and later as battleships) and battlecruisers.