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Type 037 corvette

Class overview
Name: Hainan-class
Operators:  People's Liberation Army Navy
Preceded by: Haizhui-class
Succeeded by: Type 037I (Haiqing-class)
Built: 1964-1982
In commission: 1964-present
Completed: 100+
Active: 67 (PLAN)
Lost: 1 (North Korean)
General characteristics
Type: Submarine chaser
Displacement: 430 tonnes (420 long tons; 470 short tons)
Length: 58.77 m (192 ft 10 in)
Beam: 7.2 m (23 ft 7 in)
Draft: 2.2 m (7 ft 3 in)
Propulsion:
Speed: 30.5 knots (56.5 km/h; 35.1 mph)
Range: 2,000 nmi (3,700 km) at 14 knots (26 km/h; 16 mph)
Complement: 70
Sensors and
processing systems:
  • 1 × Pot Head surface search radar
  • 1 × Soviet Tamir-II hull mounted or SJD-3 telescoping high frequency active sonar
Armament:
  • 4 × Chinese Type 66 57 mm (2.2 in) guns (2×2)
  • 4 × Chinese Type 61 25 mm (0.98 in) guns (2×2)
  • 4 × RBU-1200 or Type 81 ASW rocket launchers
  • 2 × BMB-2 ASW mortars
  • 2 × depth charge rails with more than 20 depth charges, and mine rails (10 mines total)
Class overview
Name: Haiqing class
Operators:  People's Liberation Army Navy
Preceded by: Type 037 (Hainan-class)
Succeeded by: Type 056 corvette
In commission: 1982-present
Completed: 27
Active: 27
General characteristics
Type: Submarine chaser
Displacement: 478 tonnes (470 long tons)
Length: 62.8 m (206 ft 0 in)
Beam: 7.2 m (23 ft 7 in)
Draft: 2.4 m (7 ft 10 in)
Propulsion: 4 × Chinese PR 230ZC diesel engines @ 4,000 hp (2,983 kW) with 4 shafts
Speed: 28 knots (52 km/h; 32 mph)
Range: 1,300 nmi (2,400 km) at 15 kn (28 km/h)
Complement: 71
Sensors and
processing systems:
  • 1 × Type 723 surface search radar
  • Chinese copy of French Thomson-Sintra medium frequency SS-12 VDS sonar
Armament:
  • 4 × Type 76A 37 mm gun (2 × 2)
  • 4 × Type 69 14.5 mm heavy machine guns (2 × 2)
  • 1 × Type 87 6-tubed ASW mortar
Class overview
Name: Houxin-class
Builders: Qiuxing and Huangpu Shipyard
Operators:  People's Liberation Army Navy
Preceded by: Type 021
Succeeded by: Type 037II (Houjian-class)
Built: 1991–1999
In commission: 1991-present
Completed: 26 (20 PLAN + 6 Myanmar)
Active: 26 (20 PLAN + 6 Myanmar)
General characteristics
Type: Missile boat
Displacement: 478 tons
Length: 62.8 m (206 ft)
Beam: 7.2 m (24 ft)
Draft: 2.4 m (7 ft 10 in)
Installed power: 2 Chinese PR 230ZC diesel engines at 4,000 hp (3,000 kW)
Propulsion: 4 shafts
Speed: 28 knots (52 km/h; 32 mph)
Range: 750 nmi (1,390 km; 860 mi) at 18 knots (33 km/h; 21 mph)
Complement: 71
Sensors and
processing systems:
  • Surface search radar: 1 × I-band Type 352 (Square Tie)
  • Navigational radar: 1 × I-band Type 723
  • Fire control radar: 1 × I-band Type 347 (Rice Lamp)
Armament:
駐港部隊艦艇大隊037II型-772導彈艦 2012a.JPG
Class overview
Name: Houjian-class
Operators:  People's Liberation Army Navy
Preceded by: Type 037IG (Houxin-class)
Succeeded by: Type 022 missile boat
Built: 1991-2001
In commission: 1991-present
Completed: 6
Active: 6
General characteristics
Type: Missile boat
Displacement: 520 tonnes
Propulsion: 2xSEMT-Pielstick 12 PA6 280 diesel engines @ 1,584 hp with 3 shafts
Speed: 30+ knots
Range: 1,800 nmi @ 18 kn
Crew: 75

The Type 037 corvette is a series 400-500 ton corvette type classes in service with the Peoples Liberation Army Navy. Unlike western navies, the Peoples Liberation Army Navy does not have dedicated patrol boats in its inventory. Instead, a large variety of corvette type classes, in the form of missile boats and submarine chasers fulfill the tasks of patrolling China's territorial waters. The Egyptian Navy operates eight vessels.

The Type 037 submarine chaser (NATO reporting name: Hainan-class), is a class of submarine chaser of the People's Liberation Army Navy. It was designed by China to replace the Soviet S.O.-1 class submarine chaser.

In addition to anti-submarine warfare missions, these simple yet effective units are also capable of a wide variety of missions such as mine laying and patrol. These boats were first equipped with Soviet Tamir-11 (MG-11, NATO reporting name: Stag Hoof) hull mounted sonars which had a typical range of 3 km, but in the 1970s, they were superseded by domestic Chinese SJD-3 sonar, which is modification of original MG-11: instead of being fixed to the hull, SJD-3 has a telescoping arm, so when not in use, the sonar is stored in the hull, and when deployed, the sonar is lowered into water several meter below the hull, thus increased detection range by avoiding baffles generated by the hull.

During the Sino-South Vietnamese naval clashes on January 19, 1974, two boats of this class, # 281 & # 282 (two out of the 8 total in Chinese inventory) participated in the latter half of the battle, the fastest Chinese units in the conflict. Originally the units were waiting at Yongxing Island, but due to the problem of communications, they were not notified until the battle was already in progress.

Over 100 were built, but as newer submarine chasers enter service, this class is steadily being decommissioned. A number of these ships have subsequently been exported to Bangladesh, Egypt, North Korea, Pakistan and Myanmar. On October 13, 2013, A North Korean Type 037 was lost off Wonsan with the loss of at least nineteen of her crew. She may have been in collision with another Korean People's Navy ship.


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