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BRP Ladislao Diwa (PS-178) during its commissioning with the Philippine Navy.
History
United States of America
Name	USS Chinook
Builder	Bollinger Shipyards, Lockport, Louisiana
Laid down	16 June 1993
Launched	26 February 1994
Acquired	7 October 1994
Commissioned	28 January 1995
Recommissioned	22 August 2008
Decommissioned	28 March 2023
Identification	PC-9
Motto	"Stealth Courage Swiftness"
Fate	Transferred to Philippine Navy
Badge
Philippines
Name	BRP Ladislao Diwa
Namesake	Ladislao Diwa, Filipino revolutionary and co-founder of Katipunan
Acquired	28 March 2023
Commissioned	11 September 2023
Identification	PS-178
Status	In service
Badge
General characteristics
Class and type	Alvarez-class patrol ship
Displacement	331 tons
Length	174 ft (53 m)
Beam	25 ft (7.6 m)
Draft	7.5 ft (2.3 m)
Installed power	2 × MTU 6V396 TC52 diesel generators
Propulsion	4 × Paxman Valenta 16RP200CM diesel engines producing combined total of 13,400 shp (9,990 kW) sustained
Speed	35 knots (65 km/h) maximum
Range	2,900 mi (2,500 nmi; 4,700 km)at 12 knots (22 km/h; 14 mph)
Endurance	10 days
Boats & landing craft carried	1 × 7-meter RHIB
Crew	4 officers, 24 men, 8 Special Forces
Sensors and processing systems	AN/SPS-64(V)9 I-band Surface Search Radar Sperry Vision RASCAR 2100M Combat System Sperry Vision RASCAR 3400C X-band Navigation/Surface Search Radar Sperry Vision RASCAR 3400C S-band Navigation/Surface Search Radar Wesmar side-scanning hull-mounted Sonar FLIR Systems AN/KAX-1 MarFLIR
Electronic warfare & decoys	Privateer AN/APR-39(V)1 ESM radar warning 2 × Mk.52 Mod.0 sextuple Chaff Launchers
Armament	2 × Mk.38 Mod. 2Bushmaster 25 mm chain guns 3 × M2HG Browning 12.7 mm 50 caliber machine guns 2 × M240 7.62 mm machine gun

BRP Ladislao Diwa (PS-178) is an Alvarez-class patrol ship of the Philippine Navy. She is the Philippine Navy's third ship of the class and was previously a Cyclone-class patrol ship named USS Chinook (PC-9) during her service with the US Navy.

History

United States Navy

Launched as the ninth of fourteen ships of the Cyclone-class patrol ship, the primary mission of USS Chinook (PC-9) was to serve as a platform for conducting maritime special operations, including interdiction, escort, noncombatant evacuation, reconnaissance, operational deception, intelligence collection, and tactical swimmer operations. Her small size, stealthy construction and high speed were tailored to performing long-range Special Operations Forces (SOF) insertion and extraction as well as other SOF support duties as needed.

On 10 January 2023, Chinook, along with sister patrol ship USS Monsoon (PC-4) and guided-missile destroyer USS The Sullivans (DDG-68), stopped and boarded a fishing vessel in the Gulf of Oman that was smuggling over 2000 AK-47 assault rifles.

Chinook together with sistership Monsoon were decommissioned from the US Navy on 28 March 2023, and were transferred to the Philippine Navy on the same day.

Philippine Navy

She was rechristened as BRP Ladislao Diwa (PS-178) on 11 September 2023, in honor of a Filipino revolutionary in its war of independence from Spanish colonial rule. She is currently assigned to the Littoral Combat Force of the Philippine Fleet.

The ship is the first ever Philippine Navy ship to use the name.

See also

• List of ships of the Philippine Navy

References

1. ^ Saunders, Stephen: Jane's Fighting Ships 2009-2010. IHS Jane's, 2009.
2. ^ NAVCENT Public Affairs (28 March 2023). "U.S. Navy Decommissions Last Patrol Craft Stationed in Bahrain". DVIDS. Retrieved 8 September 2023.
3. ^ Sadongdong, Martin (5 September 2023). "PH Navy to commission 2 patrol vessels from US". Manila Bulletin. Archived from the original on 8 September 2023. Retrieved 8 September 2023.
4. MaxDefense Philippines - Commissioning of BRP Valentin Diaz and BRP Ladislao Diwa
5. Epstein, Jake (10 January 2023). "US Navy Ships Caught a Fishing Boat Smuggling Over 2,000 AK-47 Rifles from Iran". Military.com. Retrieved 12 January 2023.
6. NavSource Online: Patrol Craft Coastal Photo Archive. "USS Monsoon (PC-4), ex-USCGC Monsoon (WPC 4)". NavSource.org. Retrieved 25 April 2014.
7. "2 ex-US Cyclone patrol boats to join BRP Mariano Alvarez in Navy fleet". Philstar Global. 30 March 2023. Archived from the original on 8 May 2023. Retrieved 8 September 2023.
8. Punongbayan, Michael (6 September 2023). "US patrol ships to join Philippine Navy fleet". Philstar Global. Archived from the original on 9 September 2023. Retrieved 9 September 2023.
9. Rita, Joviland (11 September 2023). "Philippine Navy commissions 2 patrol vessels". GMA News. Archived from the original on 11 September 2023. Retrieved 11 September 2023.

v t e Commissioned ships of the Philippine Navy
Frigates	Miguel Malvar class Miguel Malvar (2025) Diego Silang (2025) Jose Rizal class Jose Rizal Antonio Luna
Corvettes	Pohang class Conrado Yap
Offshore Patrol Vessels	Del Pilar class Gregorio del Pilar Ramon Alcaraz Andrés Bonifacio Malvar class Magat Salamat Jacinto class Emilio Jacinto Apolinario Mabini Artemio Ricarte
Coastal patrol vessels	Cyclone class General Mariano Alvarez Valentin Diaz Ladislao Diwa
Coastal patrol craft	Kagitingan class Bagong Silang Acero class Nestor Acero Lolinato To-ong Gener Tinangag Domingo Deluana Herminigildo Yurong Laurence Narag Tomas Campo (2024) Albert Majini (2024) Alberto Navarette class Alberto Navarette Abraham Campo Jose Andrada class Jose Andrada Enrique Jurado Alfredo Peckson Simeon Castro Carlos Albert Heracleo Alano Liberato Picar Hilario Ruiz Rafael Pargas Nestor Reinoso Dioscoro Papa Ismael Lomibao Leovigildo Gantioqui Federico Martir Filipino Flojo Anastacio Cacayorin Manuel Gomez Teotimo Figoracion Jose Loor Sr. Juan Magluyan Florencio Inigo Felix Apolinario Multi-Purpose Attack Craft (MPAC) BA-482 BA-483 BA-484 BA-485 BA-486 BA-487 BA-488 BA-489 BA-491 BA-492 BA-493 BA-494 Type 966Y class PB-356 PB-357 PB-358 PB-359 Swift Mk. 3 class PB-338 PB-339
Amphibious warfare ships	Tarlac class Tarlac Davao del Sur Bacolod City class Bacolod City Dagupan City LST-1/LST-542 class Sierra Madre Laguna Benguet Tagbanua class Tagbanua Ivatan class Ivatan Batak Waray Iwak Agta Mulgae class Mamanwa Tausug class Tausug LCU Mk.6 class Subanon Bagobo Manobo
Auxiliary ships	Gregorio Velasquez class Gregorio Velasquez Lake Buluan class Lake Buluan Lake Mainit class Lake Buhi Lake Taal FS-381 class Mangyan Fort San Antonio class Fort San Antonio Fort Abad Ang Pangulo-class Ang Pangulo Lilimbon-class Lilimbon RAmparts 3000W-class AT-010 RAmparts 2700W-class YT-027 USN 422-class Igorot Ilonggot Tasaday YT-227 YT-228

v t e Cyclone-class patrol ships
United States Navy	Cyclone Tempest Hurricane Monsoon Typhoon Sirocco Squall Zephyr Chinook Firebolt Whirlwind Thunderbolt Shamal Tornado
United States Coast Guard	Cyclone Tempest Monsoon Zephyr Shamal Tornado
Royal Bahrain Naval Force	TBA (ex-Tempest) TBA (ex-Typhoon) TBA (ex-Squall) TBA (ex-Firebolt) TBA (ex-Whirlwind)
Egyptian Navy	TBA (ex-Hurricane) TBA (ex-Sirocco) TBA (ex-Thunderbolt)
Philippine Navy	General Mariano Alvarez (ex-Cyclone) Valentin Diaz (ex-Monsoon) Ladislao Diwa (ex-Chinook)
List of patrol vessels of the United States Navy

• Cyclone-class patrol ships
• 1994 ships