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BRP Rajah Humabon (PF-11)

Philippine Navy PF-11 at Balikatan 2010.jpg
BRP Rajah Humabon (FF-11)
History
United States
Name: Atherton
Ordered: 1942
Builder: Federal Drydock & Shipbuilding Co.
Laid down: 14 January 1943
Launched: 27 May 1943
Commissioned: 29 August 1943
Decommissioned: 10 December 1945
Struck: 15 June 1975
Fate: Transferred to JMSDF in 1955, reverted back to US Navy in 1975. Transferred to Philippine Navy in 1976.
History
Japan
Name: Hatsuhi
Operator: Japan Maritime Self-Defense Force
Commissioned: 1955
Decommissioned: 1975
Fate: reverted back to US Navy in 1975.
History
Philippines
Name: Rajah Humabon
Namesake: Rajah Humabon was the native chieftain of Cebu in the Philippines at the time of Ferdinand Magellan's arrival in the archipelago in 1521.
Operator: Philippine Navy
Acquired: 23 December 1978
Commissioned: 27 February 1980
Recommissioned: January 1996
Decommissioned: 1993
Renamed:
  • BRP Rajah Humabon (PF-6) - 28 June 1980
  • BRP Rajah Humabon (PF-11) - January 1996
  • BRP Rajah Humabon (FF-11) - April 2016
Homeport: Naval Base Cavite
Status: in active service
General characteristics
Class and type: Datu Kalantiaw class (Cannon class)
Type: Destroyer Escort / Frigate
Displacement: 1,390 tons standard, 1,620 tons full load
Length: 306 ft (93 m)
Beam: 36.66 ft (11.17 m)
Draft: 8.75 ft (2.67 m)
Installed power: 6,140 hp (4,580 kW)
Propulsion:
  • 2 × GM-EMD 16-645E7 (Turbo) Main Diesel Engines
  • 2 × GM-EMD 8-268A Auxiliary Diesel Engines with 200 kW Generator
  • 1 × GM-EMD 3-268A Auxiliary Diesel Engine with 100 kW Generator
  • 2 × shafts
Speed:
  • 18 knots (33 km/h) sustained maximum
  • 21 knots (39 km/h) tops
Range:
  • 6,000 nmi (11,000 km) at 14 knots (26 km/h)
  • 10,800 nmi (20,000 km) at 12 knots (22 km/h)
Complement: 165
Sensors and
processing systems:
  • Raytheon AN/SPS-64(V)11 Surface Search and Navigational Radar
  • Furuno navigation radar
  • AN/SQS-17B Hull mounted Sonar
  • Mk.52 GFCS with Mk.41 Rangefinder for 3-inch (76 mm) guns
  • 3 × Mk.51 GFCS for 40 mm guns
Armament:

The BRP Rajah Humabon (FF-11) is a former destroyer escort of the United States Navy and is now a frigate of the Philippine Navy. It is the last World War II-era destroyer escort/frigate active in its fleet and is one of the oldest active warships in the world. She is one of three ex-USN Cannon-class destroyer escorts that served the Philippine Navy. The others being BRP Datu Sikatuna (PF-5/PS-77) and BRP Datu Kalantiaw (PS-76).

Commissioned in the US Navy as the USS Atherton (DE-169) in 1943, she was mostly assigned at the Atlantic theatre doing patrols and anti-submarine missions. She was credited of having destroyed a German U-boat, U-853 off the coast of Rhode Island, on 9 May 1945. She served in the Pacific theatre in the middle of 1945 until she was decommissioned and placed in reserve on 10 December 1945. For her service during World War II, she was awarded with one battle star.

She was transferred to the Japanese government as JDS Hatsuhi (DE-263) on 14 June 1955. Together with her sistership JDS Asahi (DE-262), they became one of the first warships of the newly organized Japan Maritime Self-Defense Force. As newer ships became available to the JMSDF, both ships were decommissioned and returned to the US Navy in June 1975.

Remained laid-up in Japan, she was transferred to the Philippine government on 13 September 1976 and was sold as Excess Defense Article on 23 December 1978. As a Philippine Navy ship, she was named RPS Rajah Humabon (PS-78), and was towed to South Korea for an extensive refit and modernization in 1979. During this period South Korea also turned over 2 of their own ex-USN Cannon class ships to the US Navy in 1977, namely the Kyong Ki (DE-71) / USS Muir (DE-770) and Kang Won (DE-72) / USS Sutton (DE-771). These were also turned-over by the US to the Philippine government, which were later on cannibalized for use as parts hulk to upgrade and repair the Rajah Humabon and her sistership Datu Sikatuna, and provide both ships with additional guns and improved machinery.


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