USRC Naugatuck was a twin-screw ironclad experimental steamer operated by the U.S. Revenue Cutter Service during the American Civil War. She served the U.S. Treasury Department as the USRC E.A. Stevens (later Naugatuck), a name she retained until sold in 1890. She was loaned to the Navy by the Treasury Department and thus mistakenly referred to in U.S. Navy dispatches during early 1862 as "USS Naugatuck".Thiesen, pp. 141–54
