Frederick A. Hinman was the third officer in charge of what would later become the Norfolk District, U.S. Army Corps of Engineers. He became the officer in charge of the United States Engineer Office in Norfolk on March 16, 1884. During that time, he improved the approach to Norfolk Harbor and the navy yard between Lambert’s Point and Fort Norfolk and cleared sunken vessels that obstructed navigation in Virginia and North Carolina. Hinman left the Norfolk office in June of 1887. (U.S. Army photo)