Background
At least one Mark 48 torpedo was reportedly recovered by Chinese fishermen in the late 1970s or early 1980s, and the government of China might have begun reverse engineering in the 1980s. However, due to the inexperience of the Chinese technological base at the time and the concentration on economic development, most of the reverse engineering project was put on hold after research had been completed on Otto fuel II, wire guidance and some other subsystems; some research continued on a much smaller scale. The Yu-6 torpedo development program was revived when the Chinese military realized that despite developing several torpedoes including the Yu-1, Yu-2, Yu-3, Yu-4, and Yu-5, the obsolete doctrine of having separate ASuW and ASW torpedoes was unsuited for modern naval warfare, and the Chinese navy needed a torpedo for both ASuW and ASW. As a result, the Yu-6 program was fully resumed in 1995 and 705th Institute was named as the primary contractor, with Dong Chunpeng (董春鹏) as the general designer.
Read more about this topic: Yu-6 Torpedo
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