Diligence: persistent application to one's work: assiduous effort.
Rig: Probably a schooner
Disposition: Lost at sea, 1806
Very little is known about the third cutter named Diligence beyond the fact that she cost $5,058.88 to construct and entered service in 1803. She was lost in a hurricane in 1806.
Donald Canney. U.S. Coast Guard and Revenue Cutters, 1790-1935. Annapolis, MD: Naval Institute Press, 1995.
Stephen H. Evans. The United States Coast Guard, 1790-1915: A Definitive History (With a Postscript: 1915-1950). Annapolis: The United States Naval Institute, 1949.
U.S. Coast Guard. Record of Movements: Vessels of the United States Coast Guard: 1790 - December 31, 1933. Washington, DC: U.S. Government Printing Office, 1934; 1989 (reprint).