Type 062 - class gunboat The Type 062 class gunboat is a class of gunboat s of the People ' s Republic of China ' s People ' s Liberation Army Navy . Successor to the Shantou class gunboat , it is also known by its NATO reporting name Shanghai - I and Shanghai - II . The class is larger than its predecessor and is the most widely built and exported Chinese military boat in terms of numbers . This unsophisticated class is relatively well - armed for its size , and with patrol mission as main duty , supplemented by ASW missions . Shanghai class gunboats . The first of the Type 062 family was the Shanghai - I class , with a total of 12 built , some of which remained in active service well into the early 1990s . The Shanghai - I class was slightly smaller than its successor the Shanghai - II class , displacing 125 tons instead of 135 tons , and had a twin Chinese Type 66 57 mm gun mount forward . All other specifications are identical to the Shanghai - II class , which replaced the 57 mm with twin 37 mm gun mounts . Fushun class minesweeper . The Fushun class minesweeper was developed from Shanghai - II class gunboat . This minesweeper version had reduced armament , with minesweeping gear replacing some of the weapons . All other characteristics of this class are identical to the Shanghai - II class , and all of 20 units were transferred to the reserves , subordinated to the naval militia for training purposes , and are being mothballed . The original of Type 062 . During the late 1950s , the PLAN found they need a more powerful gunboat because the 80 - ton class Shantou class gunboat and Huangpu class gunboat are too small , lack of firepower and endurance . Several prototypes are built by different shipyard . They are Type 0105 from Luda ( 3 ) , Type 0108 from Qingdao ( 1 ) , Type 0109 from Shanghai ( 10 ) , Type 0110 from Guangzhou ( 3 ) , and displacement varied from 100 - 150t , speed varied from 28 - 30kt , with different weapon arrangements , including 57IIx1 , 37IIx1 , 14 . 5IIx2 or 37IIx2 , 14 . 5IIx2 . In 1960 , a hybrid of all the prototypes , Type 0111 was laid down at Dalian shipyard ( Luda ) , th start of the legendary Type 062 class . Type 0111 - A ( 0111甲 ) class gunboat . The first of the Type 062 class gunboat family was Type 0111 - A ( 0111甲 ) with a total of 30 built . First 3 ships have a Type - 66 57mm twin mount forward , others replaced the 57mm twin mount with 37mm twin mount . In 1964 some of these ships added 1 twin Type - 56 75mm recoilless - gun in front of the forward gun mount and 1 Type - 53 82mm mortar behind the backward 37mm twin gun mount . Of all the 30 built , 17 are North region type and 13 are South region type . Type 0111 - B ( 0111乙 ) class gunboat . The L - 12V - 180 diesel engine used by Type 062 are prone to overheat , thirsty for fuel and has a poor working life . So the small L - 12D - 6 diesel engine was introduced . The new engine is more fuel efficiency and has long life but rated only 910 hp , so the max speed for 0111 - B is only 28 . 5kt . The low speed disappointed PLAN and only 16 ships were built . Fushun class minesweeper . Another derivative of the Type 062 family is the Fushun class minesweeper developed from Shanghai - II class gunboat . This minesweeper version had reduced armament , with minesweeping gear replacing some of weapons . All other characteristic of this class is identical to that of Shanghai - II class , and all of the 20 units were transferred to reserves subordinated to the naval militia for training purposes , and they are being mothballed .