The Malvar class is a ship class of patrol corvettes of the Philippine Navy and are currently its oldest class of corvettes. These ships were formerly used by the US Navy as Admirable-class minesweepers, and PCE-842-class and PCE(R)-848 class patrol craft, which were both based on the Admirable-class hull. In the Philippine Navy, the vessels have undergone upgrades and modifications, and have been re-categorized as corvettes. One ship, the ex-USN USS Quest was supposedly a member of this class but was converted into a non-combatant Presidential Yacht by the Philippine Navy in 1948 as RPS Pag-asa (APO-21) (later on renamed as RPS Santa Maria, and as RPS/BRP Mount Samat)
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| - Malvar-class corvette (en)
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| - The Malvar class is a ship class of patrol corvettes of the Philippine Navy and are currently its oldest class of corvettes. These ships were formerly used by the US Navy as Admirable-class minesweepers, and PCE-842-class and PCE(R)-848 class patrol craft, which were both based on the Admirable-class hull. In the Philippine Navy, the vessels have undergone upgrades and modifications, and have been re-categorized as corvettes. One ship, the ex-USN USS Quest was supposedly a member of this class but was converted into a non-combatant Presidential Yacht by the Philippine Navy in 1948 as RPS Pag-asa (APO-21) (later on renamed as RPS Santa Maria, and as RPS/BRP Mount Samat) (en)
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| Ship draft
| - * on PCE-842-class patrol craft hulls
* on Admirable-class minesweeper hulls (en)
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| Ship power
| - *3 gens
*2 × GM6-71 diesel engines with 100KW gen
*1 × GM3-268A diesel engine with 60KW gen (en)
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| Ship sensors
| - *Raytheon AN/SPS-6411 nav & surface-search radar
* SPS-50 Surface Search Radar
* SPS-21D Surface Search Radar
* CRM-NIA-75 Surface Search Radar
* SPS-53A Surface Search Radar
* RCA SPN-18 I/J-band Navigation Radar
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* Sonar (en)
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| Ship speed
| - *from last engine replacement: 1.6MW power
*16 knots max
*14 knots sustained
*12 knots economy
*from original engines or 1st replacement or both
*15.7 knots max
*14.8 knots max (en)
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| Builders
| - Pullman Standard Car Manufacturing Co.; Albina Engine and Machine Works; Willamette Iron and Steel Corp.; Winslow Marine Railway and Shipbuilding; US (en)
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| Ship armament
| - *SuW-AAW
*1 × 76mm/50L (3-inch 50-calibresLong) dual-purpose cannon on a Mk.22 mount
*Bofors 40mm AA rapid-fire cannons :
**3 × twin-barrel
**2 × single-barrel
**3 × single-barrel
**none at all '
*Oerlikon 20 mm AA rapid-fire cannons: 3 or 4 units)
*4 × M2 Browning 50cal heavy machine guns
*A number of 30cal medium machine guns
*Removed Armaments'
*4 of 1st 6 ships transferred in 1948: Either during the 1990-1993 overhaul & refits Or the 1980's )
*Last 5 ships arrived in 1975: Either during 1960's before their transfer to RVNN Or along with 4 of the 1st 6 ships
*ASW
* 1 × Hedgehog antisubmarine mortar projector
* 4 × K-gun depth charge projectors
* 2 × depth charge rails
*SuW-AAW
*Bofors 40mm twin-barrel AA rapid-fire cannons
*MCM gears'' (en)
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| Ship complement
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| Ship displacement
| - * 914 tons
* 640 tons (en)
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| Ship propulsion
| - *2 × GM12-278A diesel engines with a combined
*' 2 × GM12-567ATL diesel engines
*' 2 × Cooper Bessemer GSB-8 diesel engines (en)
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| Ship type
| - *Patrol corvette
*Gun corvette (en)
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| - The Malvar class is a ship class of patrol corvettes of the Philippine Navy and are currently its oldest class of corvettes. These ships were formerly used by the US Navy as Admirable-class minesweepers, and PCE-842-class and PCE(R)-848 class patrol craft, which were both based on the Admirable-class hull. In the Philippine Navy, the vessels have undergone upgrades and modifications, and have been re-categorized as corvettes. One ship, the ex-USN USS Quest was supposedly a member of this class but was converted into a non-combatant Presidential Yacht by the Philippine Navy in 1948 as RPS Pag-asa (APO-21) (later on renamed as RPS Santa Maria, and as RPS/BRP Mount Samat) In 2021 December 10, the remaining 2 ships of this class were finally decommissioned, and so the remaining WW2-era vessels are only the 5 armed transport-types (3 LCUs & 2 LSTs) during that time. That event was supposed to mark the end of the era of using WW2 combatants but supertyphoon Odette hit the Philippines just 6 days after their decommissioning, and so BRP Magat Salamat (PS-20) was forced "to set sail again with a volunteer force composed mainly of its last crew as a temporary command post for the duration of the relief operations in Dinagat Islands which was severely devastated", as reported by Philippine News Agency. But to begin with, the replacements for all the WW2-era vessels was originally planned for the 2000s under the 1995-2010 Philippine Military Modernization Law, however this law was largely ignored for various reasons, including overdependence on the US via their 1951 MDT and 1998 VFA, among others. Some Filipinos blamed the 1997 Asian Financial Crisis as the core reason but in actuality the Philippine economy grew by 5.2% in 1997, only contracted -0.6% in 1998, and then quickly rebounded 3.1% in 1999, and onwards; it even weathered the Global Financial crisis of 2007-2008 where, by 2009, most countries were on the negative while the Philippines managed at 1.1%, while 7.15% and 4.15% in 2007 and 2008, respectively. The modernization law expired in 2010 February 23 without even a single hint of reviving it during that time. The Philippines only thought of reviving it when the Scarborough Shoal standoff erupted in 2012 April 8. (en)
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