|Builder:||Herreshoff Manufacturing Company|
|Acquired:||20 September 1940|
|In service:||27 February 1941|
|Out of service:||28 September 1944|
|Stricken:||14 October 1944|
|Fate:||Resold to original owner|
|Length:||96 ft 6 in (29.41 m)|
|Beam:||16 ft 5 in (5.00 m)|
|Draft:||6 ft (1.8 m)|
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. She was converted for Navy service as a submarine chaser at the Greenport Basin and Construction Company at Greenport, New York, and designated PC–455 on 4 November 1940. She was placed in service 27 February 1941.
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. As Patriot she continued her patrols until placed out of service 28 September 1944. 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.
USS Captor (PYc-40), briefly the seventh ship to bear the name USS Eagle (AM-132), was a Q-ship of the United States Navy.
USS Impetuous (PYc-46) was private yacht that served as a patrol boat of the United States Navy in both World War I and World War II under different names.
USS Amethyst (PYc-3) was the yacht Samona II taken into service in the United States Navy serving as a patrol boat during World War II. After military service the vessel was returned to civilian status in 1946 and again became the yacht Samona II until sale and subsequent names of Pudlo and Explorer.
USS Onyx (PYc-5), was a diesel coastal patrol yacht of the United States Navy during World War II.
USS Amber (PYc-6) was a patrol boat in the United States Navy during World War II, built at Long Beach, California in 1930 as the yacht Infanta for the actor John Barrymore.
The first USS Persistent (PYc-48) was a submarine chaser of the United States Navy.
USS Jacamar (AMc-47) was an Accentor-class coastal minesweeper of the U.S. Navy. She was built for service during World War II and named after the jacamar.
USS Adamant (AMc-62) was an Accentor-class minesweeper in the United States Navy during World War II.
USS Cymophane (PYc-26) was a Cymophane-class patrol yacht acquired by the United States Navy early during World War II. She was used for patrol, escort, anti-submarine, and rescue operations along coastal waters.
USS Advance (AMc-63) was an Accentor-class coastal minesweeper acquired by the United States Navy for the task of removing mines from minefields laid in the water to prevent ships from passing.
USS Aggressor (AMc-64) was an Accentor-class coastal minesweeper acquired by the U.S. Navy for the dangerous task of removing mines from minefields laid in the water to prevent ships from passing.
USS Sturdy (PC-460/PYc-50) was a yacht converted to a patrol boat acquired by the U.S. Navy for the task of patrolling the coastal waters of the U.S. East Coast during World War II. Her primary task was to guard the coastal area against German submarines.
USS Venture (PC-826/PYc-51) was a patrol boat acquired by the U.S. Navy for the task of patrolling the coastal waters of the New York coast during World War I. Her primary task was to guard the coastal area against German submarines. For this reason, she carried depth charges.
At least three ships of the United States Navy have been named USS Patriot:
USS Sardonyx (PYc-12), formerly the yacht named Queen Anne (1928), was a patrol boat in the United States Navy during World War II.
USS Valiant (PYc-51), originally USS PC-509, was a United States Navy patrol vessel in commission from 1941 to 1944.
USS Siren (PY-13), briefly CMc-1, was a yacht in commission in the United States Navy as a Patrol Yacht from 1940 to 1946.
USS Turquoise (PY-18), was a yacht in commission in the United States Navy as a Patrol Yacht from 1940 to 1943.
USS PCS-1405 was a United States Navy minesweeper in commission from 1944 to 1946. She saw service in the latter stages of World War II.
USS Topaz (PYc-10) was a coastal patrol yacht in the service of the United States Navy. She was named for the gemstone Topaz.