Charles Napier Aaron Manby, named after the master of the Horseley Ironworks, Aaron Manby, 46, is a small 116-ton iron-hulled steamship. Jointly designed by Manby, by his son Charles, 18, and especially by Captain Charles Napier, 36, she was launched last year. She is up to date of innovation. She is obviously meant to prove validity of Napier's conceptions and of a Manby's invention. ¤ Manby is a talented civil engineer. In 1813, he patented a technique to form blocks o