USS Patriot (PYc-47), formerly the Katoura, was built in 1930 by the Herreshoff Manufacturing Company in Bristol, Rhode Island United States and purchased by the United States Navy, for $1.00, from Mr. A. Loomis of New York City on 20 September 1940.

On 1 March 1941, PC–455 departed New York City for Boston, Massachusetts, where she reported for duty in the 1st Naval District.

There she conducted coastal patrol assignments as PC–455 until 16 June 1943 when she was named Patriot and redesignated PYc–47.

She was then laid up at Quincy, Massachusetts, to await delivery to the Maritime Commission.

Struck from the Naval Vessel Register on 14 October 1944, she was turned over to War Shipping Administration 14 March 1945 and subsequently sold to her former owner for the initial purchase price of $1.00.