The second USS Tangier (AV-8) was a Maritime Commission type C-3 cargo ship, converted to a seaplane tender in the United States Navy during World War II. The ship, the first of the C-3s to be launched and significant in a revival of Pacific coast shipbuilding, was launched 15 September 1939 and delivered to the Maritime Commission as Sea Arrow. The ship was acquired by the U.S. Navy during completion before any commercial service, put back into the builder's yard, and converted to a seaplane tender during 1940. After spending over a year in conversion the ship was commissioned on 25 August 1941.