23rd May 1921
USS Granite State (formerly USS New Hampshire), a 74-gun ship of the line which served as a storeship during the American Civil War, suffers a fire and sinks.
The Leipzig War Crimes Trials begin in Germany as part of the Versailles Treaty, starting with the trial of Sergeant Karl Heynen, who is accused of mistreating Allied POWs. British witnesses at Leipzig.
Ship Losses:
USS Granite State (United States Navy) The stores ship, a former ship of the line, caught fire and sank in the Hudson River. She was refloated in July 1922.