BRP Sultan Kudarat (PS-22)
|Builder:||Willamette Iron and Steel Corp., Portland, OR|
|Laid down:||2 December 1942|
|Launched:||18 May 1943|
|Commissioned:||30 October 1944|
|Renamed:||USS Crestview (PCE-895), 15 February 1956|
|Fate:||transferred to the Republic of Vietnam Navy, 29 November 1961|
|Name:||Đống Đa II|
|Acquired:||29 November 1961|
|Fate:||Escaped to the Philippines after the fall of South Vietnam, 1975|
|Namesake:||Sultan Muhammad Dipatuan Kudarat, a Sultan of Maguindanao from 1619 to 1671.|
|Acquired:||5 April 1976|
|Commissioned:||27 July 1976|
|Renamed:||BRP Sultan Kudarat (PS-22), June 1980|
|Status:||in active service, as of 2018[update]|
|Class & type:||PCE-842-class patrol craft (in U.S. Navy service)|
|Class & type:||Miguel Malvar-class corvette (in Philippine Navy service)|
|Displacement:||914 Tons (Full Load)|
|Length:||184.5 ft (56.2 m)|
|Beam:||33 ft (10 m)|
|Draft:||9.75 ft (2.97 m)|
|Installed power:||2,200 hp (1,600 kW)|
|Speed:||16 knots (30 km/h; 18 mph) (maximum),|
|Range:||6,600 nmi (12,200 km; 7,600 mi) at 11 knots (20 km/h; 13 mph)|
BRP Sultan Kudarat (PS-22) is a Miguel Malvar-class corvette of the Philippine Navy. She was originally built as USS PCE-881, a PCE-842-class patrol craft for the United States Navy during World War II. She was acquired by the Philippine Navy on April 1976, and was commissioned later on as RPS Sultan Kudarat (PS-22). The ship is in active service, as of 2018[update]. Along with other World War II-era ships of the Philippine Navy, Sultan Kudarat is considered as one of the oldest active fighting ships in the world today.
Commissioned in the US Navy as USS PCE-895 in 1944, she was renamed USS Crestview (PCE-895) on 15 February 1956, named for the City of Crestview, Florida, "in accordance with a recent Navy decision to name its patrol vessels, previously known only by the hull number, by the names of cities of the United States with populations between 2,500 and 10,000".
She was then transferred to the Republic of Vietnam on 29 November 1961. She served the Vietnamese Navy as RVNS Đống Đa II (HQ-07) up until her escape to the Philippines in 1975, together with other South Vietnamese Navy ships and their respective crew.
She was formally acquired by the Philippine Navy on 5 April 1976 and was commissioned into the Philippine Navy on 27 July 1976 and was renamed RPS Sultan Kudarat (PS-22). She was renamed to BRP Sultan Kudarat (PS-22) in June 1980 using a new localized prefix.
Between 1990 and 1991 the Sultan Kudarat underwent major overhaul, weapons and radar systems refit, and upgrade of communications gear.
She is currently assigned with the Patrol Force of the Philippine Fleet.
There are slight differences between the BRP Sultan Kudarat as compared to some of her sister ships in the Philippine Navy, since her previous configuration was as a patrol craft escort (PCE), while the others are configured as rescue patrol craft escort (PCER) and minesweepers (Admirable class) ships.
Originally the ship was armed with one Mk.26 3"/50 caliber dual purpose gun, three single Bofors 40 mm guns, one Hedgehog depth charge projector, four depth charge projectiles (K-guns) and two depth charge tracks. Changes were made during its transfer to the South Vietnamese Navy, as it appears in photos show the removal of her anti-submarine weapons, and addition of four Mk.10 Oerlikon 20 mm guns. This made the ship lighter and ideal for surface patrols, but losing her limited anti-submarine warfare capability. The same configuration applies when she was transferred to the Philippine Navy up until around 1990-1991.
During its overhaul and refit between 1990 to 1991, the Philippine Navy made some changes in the armament set-up. Some sources claim the loss of its three Bofors 40mm cannons during the 1990-1991 overhaul and refit period, but photos  at of 2009 show the Bofors guns still present. Final armaments fitted to the ship are one Mk.26 3"/50-caliber gun (fore), three single Bofors 40 mm cannons (aft), four Mk.10 Oerlikon 20 mm cannons (2 each on bridge wings), and four M2 Browning 12.7 mm/50 caliber machine guns (2 besides main bridge, 2 aft near the lower Bofors gun tub).
Also during the refit the ship's RCA CRM-NIA-75 surface search radar and RCA SPN-18 navigation radar was replaced by a Raytheon AN/SPS-64(V)11 surface search and navigation radar system. Later modifications included the installation of an additional Furuno navigation radar , long range and satellite communications system and GPS system standard to all Philippine Navy ships.
The ship is powered by two GM 12-278A diesel engines, with a combined rating of around 2,200 bhp (1,600 kW) driving two propellers. The main engines can propel the 914 tons (full load) ship to a maximum speed of around 16 knots (30 km/h).
Recent photos  show that air-conditioning was also installed on the Sultan Kudarat.
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