OVERVIEW: The Yu‑6 is a Chinese submarine‑launched heavyweight torpedo, first fielded in 2005. It is a dual‑purpose weapon designed for both anti‑submarine (ASW) and anti‑surface (ASuW) missions.

DETAILS: “Yu” (鱼) means “fish” in Chinese torpedo nomenclature; “6” denotes its series number. Developed beginning in 1995 by CSIC’s 705th Institute using technology reverse‑engineered from a captured Mk 48, it entered service in 2005 after a decade of development. It uses Otto‑fuel II propulsion, achieves a high attack speed of over 65 kn, and has a maximum range exceeding 45 km. Guidance is confirmed to include wire mid-course control, active/passive acoustic homing, and wake homing capabilities.

TYPE: Heavyweight Anti‑Submarine and Anti‑Surface Warfare Torpedo

FUNCTION: After submarine launch, the Yu‑6 is guided during the mid‑course via wire, enabling real‑time updates. It transitions to active/passive acoustic homing in the terminal phase, with wake-homing engaged to track surface vessels.

NOTE:
IOC: 2005 (Yu‑6)
Manufacturer: China (CSIC, 705th Institute)
Operators: China
Platforms: Song‑class (Type 039), Yuan‑class (Type 039A), Shang‑class (Type 093) submarines

SOURCE:
Wikipedia: https://en.wikipedia.org/wiki/Yu-6_torpedo ; GlobalSecurity.org: https://www.globalsecurity.org/military/world/china/yu-6.htm ; cmano‑db.com Torpedo Database