USS Black Arrow (ID-1534) was a troop transport commissioned in 1919 to assist in the post-World War I repatriation of U.S. troops from France. Black Arrow was originally SS Rhaetia, a passenger-cargo ship built in Germany in 1904–05 for the Hamburg-America Line. From 1905 to 1914, Rhaetia operated primarily between Hamburg, Germany and South America, though she was also intermittently employed as an immigrant ship to the United States. With the outbreak of World War I in August 1914, Rhaetia was interned at Philadelphia.