USS Flagstaff (PGH-1)
 USS Flagstaff (PGH-1) was the only Flagstaff-class patrol gunboat (hydrofoil) and was acquired by the United States Navy because of her relatively low cost and very high speed. She was later loaned by the Navy to the U.S. Coast Guard as USCGC Flagstaff (WPBH-1). The Coast Guard’s interest in the craft was the craft’s speed and its ability to interdict smugglers and other suspicious craft approaching the U.S. coast.