 Complete the following phrase:  El Capitan, United States Official Number 285587, was built in 1917 by the Newport News Shipbuilding and Drydock Company at Newport News, Virginia for the Southern Pacific Company Atlantic Steamship Lines. In 1915 the line operated from the North River piers 4952 at the foot of 11th Street in New York to New Orleans under the flag and name of Morgan Line, which combined with the Southern Pacifics rail service from the Pacific Coast was known as the Sunset Gulf Route. During World War I the ship was purchased from the builder before delivery to the owner by the United States Shipping Board USSB which later turned the ship over to the United States Navy which placed her in commission as USS El Capitan ID-1407 from 1918 to 1919. El Capitan was returned to commercial service by the Southern Pacific Company until just before the United States entry into World War II when the United States War Shipping Administration WSA acquired the ship, changed her registry to Panama and placed her in operation under its agent, United States Lines. El Capitan was in the Arctic convoy 