Yu-2

Yu-2 (鱼-2, "Torpedo-2", 鱼 here refers to the initial character for "torpedo", 鱼雷/Yu lei in Chinese) torpedo was a Chinese development of the unguided straight-running Soviet ASuW RAT-52 torpedo with passive acoustic homing capability added. The historical background of Yu–2 is identical to that of Yu-1 torpedo and Yu-4 torpedo. Contrary to the higher number assigned, Yu-2 torpedo was the first Chinese domestically produced torpedo entering service, ahead of the Yu-1 torpedo.