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Jacinto-class corvette
BRP Artemio Ricarte PS37.jpg
BRP Artemio Ricarte (PS-37), a Jacinto class corvette
Career (Philippines) Flag of the Philippines.svg
Builder: Hall Russell
Fate: Active In-Service
General characteristics
Class & type: Jacinto class
Type: Patrol Corvette
Displacement: 712 tons full load
Length: 205.4 ft (62.6 m)
Beam: 32.8 ft (10.0 m)
Draft: 8.9 ft (2.7 m)
Installed power: 14,188 hp (10,580 kW)


  • 2 × APE-Crossley SEMT-Pielstick 18 PA6 V 280 Diesel engines
  • 2 × shafts
  • 1 × Schottel S103 LSVEST drop-down, shrouded loiter retractable propeller, 181 shp (135 kW)
Speed: 25 knots (46 km/h) (sustained)
Range: 2,500 nmi (4,600 km) at 17 knots (31 km/h)[1]
Boats & landing
craft carried:
2 × Avon Searaider 5.4m 30 knots (56 km/h) 10-man Semi-rigid boat aft[2]
Complement: 31
Sensors and
processing systems:
  • Sperry Marine Naval BridgeMaster E Series Surface Search Radar
  • Kelvin Hughes Type 1006 Navigation Radar
  • Ultra Electronics Command and Control System
  • Radamec 1500 Series 2500 Electro-Optical Tracking/Fire Control System
  • 1 × Oto Melara 76 mm Compact DP gun
  • 1 × 25 mm M242 Bushmaster on MSI Defence Seahawk mount
  • 2 × 20 mm Mk. 16 cannons on Mk.68 mounts
  • 2 × M2 Browning 12.7 mm/50 caliber machine guns
  • Armor: Belted Steel

    The Jacinto class is a ship class of three patrol corvettes currently in service with the Philippine Navy. The ships formerly served in the Royal Navy's Hong Kong Squadron as Peacock class patrol vessels until 1997. The three vessels have undergone weapons, electronics, propulsion and hull upgrades in Philippine Navy service, increasing their capabilities as compared to the original Peacock class vessels.


    Launched as a series of five patrol vessels, the Peacock class were originally part of the Hong Kong Squadron of the Royal Navy. The ships were built by Hall Russell in the United Kingdom and were commissioned into Royal Navy service from 1983 to 1984. The class was designed specifically for patrol duties in Hong Kong waters. As well as "flying the flag" and providing a constant British naval presence in the region, they could also undertake a number of different roles including seamanship, navigation and gunnery training. In addition, they performed search-and-rescue duties for which they had facilities to carry divers (including a decompression chamber) and equipment to recover vessels and aircraft. They also worked with the Marine Department of the Hong Kong Police and with Customs & Excise in order to prevent the constant flow of illegal immigrants, narcotics and electronic equipment into the Colony.[3]

    Three of these ships - HMS Peacock (P239), HMS Plover (P240), and HMS Starling (P241) - were sold to the Philippines as a sign of goodwill, and were officially turned over to the Philippine Navy on 1 August 1997 when the sovereignty of Hong Kong was transferred from the United Kingdom to the People's Republic of China.[2]

    Technical details

    The ships under this class are characterized by a low freeboard, an Oto Melara 76 mm gun turret located forward, a large single funnel stack amidships, and a crane and two rigid-hulled inflatable boats (RHIB) aft. The Oto Melara 76 mm Compact DP (Dual Purpose) gun is the primary weapon and is mounted in a turret forward of the bridge. It has a range of up to 10 nautical miles (20 km) and can be used against ships, aircraft or ground targets. It is remotely controlled from within the Combat Information Center by the gunnery officer and has no crew within the turret itself. The gun can fire 80 rounds in 60 seconds from its ready magazine, and the ships can carry a total of 450 rounds.

    The secondary weapon (located at the stern) is a M242 Bushmaster 25 mm cannon in an MSI Defense System Seahawk A1 mount. This weapon is integrated with the 76 mm primary weapon via an Ultra Electronics Command and Control System and a Radamec 1500 Series 2500 Electro-Optical Tracking/Fire Control System. This new system was installed as part of Phase 1 of the Philippine Navy JCPV upgrade program. The Radamec 1500 Series 2500 replaced the older GSA7 Sea Archer Mk 1 electro-optical director with a GEC V3800 thermal imager added in 1987.[2][4]

    In addition to the abovementioned guns, these ships also carry two 12.7mm 50 caliber heavy machine guns at the bridgewings, two 20 mm Mark 16 guns on Mk.68 mounts at midships, and two 50 mm rocket flare projectors.[2]

    The ships are powered by two APE-Crossley SEMT-Pielstick diesels (14,188 bhp combined) driving two three-bladed propellers. It has a drop down loiter engine with a shrouded prop of 181 bhp (135 kW) used to keep station and save fuel. The main engines can propel the 664 ton (712 tons full load) ship at over 28 knots (52 km/h), with a sustained speed of 25 knots (46 km/h). Its range is 2,500 nautical miles (4,630 km) at 17 knots (31 km/h).[1]

    These corvettes were specifically designed for Asian service, having air-conditioned crew spaces and have been designed to stay at sea during typhoons and other strong weather anomalies common to Asian seas. The ships were modified soon after entering the Royal Navy service with deeper bilge keels to alleviate a propensity to roll during moderate and heavy seas.[5]

    Each ship carries two Avon Searaider 5.4 m, 30 kt, 10-man RHIB.[2]


    Aside from the new M242 Bushmaster 25 mm cannon and upgrade of its command & control and fire control systems as part of the ship's Phase 1 upgrade, the Philippine Navy also installed a new Raytheon gyro compass, Sperry Marine Naval BridgeMaster E Series Surface Search Radar, GPS, anemometer, and EM logs. These were integrated with the ship's existing systems. The Phase 1 upgrade was completed in 2005.[6]

    Phase 2 is the Marine Engineering Upgrade Program, which includes the repair and remediation of the hull, overhaul and improvement of the main propulsion including control and monitoring systems, electrical plant, auxiliary systems, outfitting and hull furnishings and training the crew in the operation and maintenance of the new plant.[5]

    Phase 3 (still in bidding) is a Service Life Extension Program (SLEP).[6]

    Apart from the upgrades, additional refits were made to replace the four (4) 7.62mm machine guns with two (2) .50 caliber heavy machine guns and two 20 mm Mk. 16 cannons.[7] There are plans to add anti-ship missiles to the ships, but due to top-weight problems, it would have to be a lightweight system such as Sea Skua, although no missiles have been ordered to date.[2]

    Ships in Class

    Bow number Ship name Launched Commissioned Service Status
    PS-35 BRP Emilio Jacinto 1 December 1982 4 August 1997 Philippine Navy Patrol Force Active
    PS-36 BRP Apolinario Mabini 12 April 1983 4 August 1997 Philippine Navy Patrol Force Active
    PS-37 BRP Artemio Ricarte 7 September 1983 4 August 1997 Philippine Navy Patrol Force Active



    1. 1.0 1.1 1.2 Saunders, Stephen: Jane's Fighting Ships 107th Edition 2004-2005. Jane's Information Group Ltd, 2004.
    2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Wertheim, Eric: The Naval Institute Guide to Combat Fleets of the World 15th Edition, page 552. Naval Institute Press, 2007.[1]
    3. Royal Navy Postwar. Peacock Class Offshore Patrol Vessels.[dead link]
    4. Friedman, Norman: The Naval Institute Guide to World Naval Weapons System 5th Edition, page 307. Naval Institute Press, 2006.[2]
    5. 5.0 5.1 Manokski's ORBAT @ Hueybravo. Jacinto class corvettes page.
    6. 6.0 6.1 AFP Materiel Technical Specification Archives Ships.
    7. PS Emilio Jacinto class.

    External links

    See also

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