Passage: The ship entered service in 1943, and served in the Pacific theater of World War II until she was torpedoed during the Aerial Battle of Taiwan-Okinawa and forced to return to the United States for repairs. Placed in reserve after the war, Canberra was selected for conversion into the second guided-missile carrying warship in the USN fleet. Following the conversion, she was host to the ceremony for selecting the Unknown Soldier representing World War II in 1958, undertook an eight-month round-the-world cruise in 1960, participated in the Cuban Missile Crisis naval blockade in 1962, and was deployed to the Vietnam War on five occasions between 1965 and 1969.

Question: what year did the ship first enter service?
1943