Born in Yorkshire in 1890, the son of a solicitor. Entered the Royal Navy at the age of fifteen. Midshipman, 1907. Lieutenant, 1912. Second in command of the submarine, C.10, May 1913-October 1915. Commanded the submarine C.5, operating in the North Sea, 1916. Commanded the submarine H.1, operating with the Italians in the Adriatic, against the Austrians, September 1916-May 1918. Among his subsequent commands was the submarine L.4 on the China Station, 1921-2. Second-in-command of the cruiser Calliope, 1925-6. Served with the Naval Intelligence Division, 1931-3. Commander, retired list, 1932. Author of historical articles in the Naval Review from 1925 and of a confidential history of mutiny in the Royal Navy (written in 1933, 'classified' until 1973). Author of "War at Sea Under Queen Anne", 1938. Served in the Naval Historical Section of the Admiralty, 1939-45, writing battle summaries to provide guidance for Admirals and their staffs. His only brother, a Lieutenant in the West Riding Regiment, was killed in the second Battle of Ypres in April 1915. Owen died in 1970.