USS Sable (IX-81) was a training ship of the United States Navy during World War II. Originally built as the Greater Buffalo, a sidewheel excursion steamer, she was converted in 1942 to a freshwater aircraft carrier to be used on the Great Lakes. She was used for advanced training for naval aviators in carrier takeoffs and landings. One aviator that trained upon the Sable was future president George H. W. Bush. Following World War II, Sable was decommissioned on 7 November 1945. She was sold for scrapping on 7 July 1948 to the H.H. Buncher Company.