Passage: The second Navy ship named for the city of Honolulu, Hawaii, she was launched on 26 August 1937 at the New York Navy Yard, sponsored by Helen Poindexter (the daughter of Joseph B. Poindexter, the Governor of Hawaii), and commissioned on 15 June 1938, with Captain Oscar Smith in command.After a shakedown cruise to England, Honolulu engaged in fleet problems and exercises in the Caribbean Sea. She steamed from New York on 24 May 1939 to join the Pacific Fleet, arriving at San Pedro, California on 14 June. For the remainder of the year, she engaged in exercises along the West Coast. During the first half of 1940, Honolulu continued operations out of Long Beach, California and after an overhaul at the Puget Sound shipyard, she steamed out of Long Beach Naval Shipyard on 5 November for duty from Pearl Harbor. She operated there through 1941, and she was moored at the Naval Station when the Japanese launched their attack on Pearl Harbor on 7 December 1941. Honolulu suffered only minor hull damage from a near miss.

Question: The ship Honolulu joined the Pacific fleet in what year?
1939