The Yu-4 is a Chinese copy of the Soviet/Russian SAET-60 electric-propelled, acoustic-homing anti-ship torpedo. Two variants have been developed including the passive acoustic-homing variant Yu-4A and the active/passive acoustic-homing variant Yu-4B. The torpedo entered service in the mid-1980s and is carried by the Type 035G (modified Ming class) and Type 039 (Song class) diesel-electric submarines.
China received the acoustic-homing torpedo t...
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The Yu-4 is a Chinese copy of the Soviet/Russian SAET-60 electric-propelled, acoustic-homing anti-ship torpedo. Two variants have been developed including the passive acoustic-homing variant Yu-4A and the active/passive acoustic-homing variant Yu-4B. The torpedo entered service in the mid-1980s and is carried by the Type 035G (modified Ming class) and Type 039 (Song class) diesel-electric submarines.
China received the acoustic-homing torpedo technology from the Soviet Union in the late 1950s, and began the reverse-engineering work in 1958. The development of the Type 920 electric powerplant for the torpedo succeeded in the early 1960s. However, the Yu-4 programme was postponed in 1963 as the priority was given to the development of the unguided wet heater Kerosene-air torpedo.
The Yu-4 development programme was resumed in 1966, with the prototype finished in 1971. Unfortunately this design was rejected by the PLA Navy due to its poor performance. Later the PLA navy decided to...
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