1962 and 10, the China navy held a meeting to finalize the design of escort ships in Qingdao, and selected one of the four models (0 105, 0 108, 0 109, 010/0). In this meeting, all four types of escort ships were displayed on the spot. Finally, the China Navy chose 011,and then made several modifications, including reducing the weight of the boat to 1 15 tons, changing the cabin configuration, and changing the main armed forces from two 66-type double-mounted 57mm 77 caliber fast guns to two 6/kloc-. The reason for replacing 57mm fast gun is that its technology is immature, which leads to unstable performance and high failure rate. 196265438+February, the first batch of three A boats 011were started at Dalian Shipyard, all of them were completed in September/963, and the trial began in June/65438+1October of the same year. These three 0111kloc-0/65438a were delivered to foreign buyers after completing the test. The 0 1 1 model was finally approved and finalized by the the State Council Military Standardization Committee in 1963, and was given the official model 062 (although the displacement has been reduced to 1 15 tons, it is still called 125 tons in the mainland navy), while it is called in the west.

0 1 1 1 model is equipped with two 37mm main guns, and two 6 1 model double-mounted 25mm 60 caliber machine guns are arranged on the deck behind the bridge (because the cockpit width is not large, two 25mm machine guns can be rotated to the bow direction to shoot at the same time); There are two depth charge launchers at the stern, which can carry up to 8 depth charges. There is also a mine-laying track, which can carry six mines. Therefore, this class boat can also perform tasks such as diving and mine blockade. There is a small sonar at the bottom of the ship to detect submarines. This class of ships is also equipped with a smoke generator, which can provide cover effect in melee. Type 0 1 1 1 adopts round bilge hull design. Although the resistance is greater than the peak bilge, it has better seakeeping performance, stronger navigation ability and better stability. The stability of model 011is quite good, and the initial stability center is only 0.7m high from the waterline. According to the operation experience of the mainland navy, this type of boat sometimes tilts to the extent that people are half lying on the bulkhead in big waves, but it can still easily straighten the boat body. The design of model 0 1 1 1 can bear the water in two cabins without sinking. 1964, 011The boat was equipped with a 75mm recoilless gun mounted by the army before the 37mm gun at the bow and an 82mm mortar mounted after the 37mm gun at the stern. The recoilless gun was used to attack enemy ships, while the mortar was mainly used to throw flares at night. In addition, some 011models are also equipped with large searchlights when they are in service, which are used to search for enemy spy ships that attempt to infiltrate ashore at night.

Due to the great difference in climate between the north and the south of China, Shanghai classes are divided into two types: south and north. The north type has heating boiler facilities to cope with the severe cold climate, while the south type is called 011n, with electric fans, cold rooms and enhanced ventilation systems to adapt to the extremely hot environment in the south. 1964 011a won the first prize of national new product development. In addition to Dalian factory, Guangzhou Huangpu factory has also joined Shanghai's first-class production system to meet the needs of Nanhai team. At that time, the production capacity of Huangpu Factory was not enough to build such a ship, but if it was built by Dalian Factory, it could not reach the South China Sea through the Taiwan Province Strait, which was still in the hands of the Taiwan Province Navy. Therefore, the China Navy decided to send technicians directly from Dalian Shipyard, along with the ship's materials, to Guangzhou by train and assemble them in Huangpu 404 Factory. From 196 1 to 1965, a total of 30 A boats were built in mainland China, including 1 1 North (including prototype boats) produced by Dalian factory and 17 produced by Guangzhou Huangpu factory. In order to balance the "dilemma" between speed and service life, China Navy specially invested millions of RMB in No.407 Factory to develop a diesel engine with output of 1000 horsepower and long service life. 1963, a new H- 12V- 180 diesel engine was developed, and then the Shanghai class was equipped with this engine, which was called 01165438. While C-type 0 1 1 180 was being built, because the output of H- 12V- 180 diesel engine could not keep up, China introduced another 1300 horsepower diesel engine as a transitional substitute, and the ship number of these diesel engines was 0. The first model T 0 1 1 1 started in February 1965 and was completed at the end of the same year; Due to the increase of engine power, the speed of the 011t model has increased to more than 30 knots. The clutch of transmission system was changed from electromagnetic type to hydraulic type in the later production of 0111d Ⅱ or 011d.

1965 011a participated in the naval battles of the three major countries, exposing some shortcomings. Therefore, the mainland subsequently made some improvements to 011c, including reducing the size of the bridge to reduce the bombing area and installing it. In addition, the material of the deck cabin was changed from hard aluminum to soft aluminum to reduce the scattering of fragments after being shot, and the mast was changed from the original fixed type to foldable type so as to pass through the bridge opening in inland rivers or enter cave fortifications. The 0 1 1 1 C/D type is called 0 1 1 C II type and 01d ii type respectively after the above improvement procedures, and they are collectively called 01/kloc. C-type 0 1 1 1 is the most produced configuration in Shanghai, among which Dalian Shipyard has built 43 C-type 0 1 165438 and10 C-type 0/kloc-0. Huangpu Shipyard has built two batches of ***23 ships 01180c (six of them still use L- 12V- 180 diesel engines for various reasons, so they are sometimes classified as 01/kloc-0. A total of 265,438+06c series 065,438+065,438+065,438+0 have been built in the mainland, some of which are used for export. And 85 ships of type 011d and type d ii * * *, including 26 ships of type d and 59 ships of type d ii.

At the end of 1960' s, China navy had planned to refit three C-type 0 1 165438 to use gas turbine engines to greatly increase the speed. This idea is called 0 1 1 1R, but it has not achieved Shanghai-class firepower. However, the long-term combat and the maintenance of personnel combat effectiveness (including the comfort and seaworthiness of living space) are not ideal. After installing a large number of weapons on the hull with limited volume, there is not much living space left and the seaworthiness is limited. The lack of stable fins makes the hull shake a lot, and the noise of the engine on board is also very loud. In addition, there are only 5 tons of fresh water on board (mostly for engines) and there is no air conditioning. In hot weather,

Therefore, in the 1960s, the China Navy decided to continue to improve the design of 011s to meet the needs of the South China Sea Fleet. This improved model is named 062- 1. The main improvement projects include increasing fresh water storage, installing air conditioning system, adding stabilizing fins on both sides of the hull, and installing a relatively quiet one in the rear engine room. The first 062- 1 was started on 1985, delivered on 1986, and then continued to produce, which is called Shanghai III class in the west. Externally, 062- 1 has a relatively modern bridge, which is the most significant difference from the previous Shanghai class. In addition to personal use, China has also built a large number of Shanghai-class products for export or military assistance, mainly for countries such as the Middle East and Africa:

North Vietnam received 8 ships1966 in May;

Tanzania acquired seven ships from 1970 to 197 1, and 1992 acquired two more;

Guinea received 6 ships at 197 1, and delivered 12 ships to North Korea and Pakistan in the same year;

1972 Sri Lanka obtained 5 ships, and 199 1 year will receive 5 more ships.

Bangladesh received six ships from 1980 to 1982 (two more ships were added to 1995).

In the same period, Albania also received 6 ships;

1984 delivered 4 ships to Egypt and 3 ships to Congo;

Tunisia acquired three ships in 1994.

In addition, Romania was authorized by the mainland and transferred technology in 1973, and produced 25~27 boats of this class by itself.

Other countries that have won the Shanghai class include Cameroon (2 ships), Cambodia (4 ships), Sierra Leone (3 ships) and Say (4 ships).