HMS Rupert (K561)

History
United States
Name	unnamed (DE-96)
Ordered	10 January 1942
Builder	Bethlehem-Hingham Shipyard, Hingham, Massachusetts
Laid down	25 August 1943
Launched	31 October 1943
Completed	24 December 1943
Commissioned	never
Fate	Transferred to United Kingdom 24 December 1943
Acquired	Returned by United Kingdom 20 March 1946
Stricken	17 April 1946
Fate	Sold for scrapping 17 June 1946
United Kingdom
Name	HMS Rupert (K561)
Namesake	Prince Rupert of the Rhine (1619-1682), Royalist cavalry commander during the English Civil War and Admiral of the Fleet during the Second and Third Anglo-Dutch Wars
Acquired	24 December 1943
Commissioned	24 December 1943
Fate	Returned to United States 20 March 1946
General characteristics
Displacement	1,400 long tons (1,422 t)
Length	306 ft (93 m)
Beam	36.75 ft (11.2 m)
Draught	9 ft (2.7 m)
Propulsion	Two Foster-Wheeler Express "D"-type water-tube boilers; GE 13,500 shp (10,070 kW) steam turbines and generators (9,200 kW); Electric motors for 12,000 shp (8,900 kW); Two shafts;
Speed	24 knots (44 km/h)
Range	5,500 nautical miles (10,200 km) at 15 knots (28 km/h)
Complement	186
Sensors &; processing systems	SA & SL type radars; Type 144 series Asdic; MF Direction Finding antenna; HF Direction Finding Type FH 4 antenna;
Armament	3 × 3 in (76 mm) /50 Mk.22 guns; 1 × twin Bofors 40 mm mount Mk.I; 7–16 × 20 mm Oerlikon guns; Mark 10 Hedgehog antisubmarine mortar; Depth charges; QF 2-pounder naval gun;
Notes	Pennant number K557

The fourth HMS Rupert (K561) was a British Captain-class frigate of the Royal Navy in commission during World War II. Originally constructed as a United States Navy Buckley class destroyer escort, she served in the Royal Navy from 1943 to 1946.