USC&GS Arago was a steamer that served as a survey ship in the United States Coast Survey from 1871 to 1878 and in the United States Coast and Geodetic Survey from 1878 to 1890. She was the second ship of the Coast Survey or Coast and Geodetic Survey to bear the name. Arago was built by Maury and Steinburg at New York City in 1871. She did survey work along the Atlantic coast of the United States throughout her career. When the Coast Survey was reorganized in 1878 to form the Coast and Geodetic Survey, Arago became a part of the new service.