USS Fli-Hawk (SP-550)

USS "Fli-Hawk" (SP-550) was a United States Navy patrol vessel in commission from 1917 to 1919.
"Fli-Hawk" was built as a private motorboat or motor yacht of the same name in 1912. In 1917, the U.S. Navy acquired her under a free lease from her owner for use as a section patrol vessel during World War I. She was commissioned as USS "Fli-Hawk" (SP-550) on 12 May 1917 with Boatswain's Mate P. Savage, USNRF, in command.
Assigned to the 5th Naval District, "Fli-Hawk" operated on patrol duties in the Norfolk, Virginia, area for the rest of World War I.
On 31 December 1917, "Fli-Hawk" was getting underway when she collided with the steamer SS "Gratitude" in Norfolk Harbor. "Fli-Hawk" sank three hours later, but was raised, repaired, and returned to service.
"Fli-Hawk" was decommissioned on 8 February 1919 and returned to her owner.