The first and only confirmed submarine of its class, Changzheng 6 (hull no.406), was laid down in 1978 at Huludao, 190 km (120 mi) northeast of Beijing, China.

[1] She was designed by Peng Shilu (彭士禄) and Huang Xuhua, and derived from the Type 091 submarines, with an extended hull to accommodate twelve missile tubes.

[2] The 092 has undergone numerous refits, currently featuring a new black paint, possible quieting technologies, French-designed sonar, and the improved longer ranged JL-1A SLBM.

[5] The 092 is aging however and a new nuclear-powered ballistic missile submarine, the Type 094, has been developed and deployed by the People's Liberation Army Navy.

"[4] While its capability is still being questioned, Xia made its worldwide debut on 23 April 2009 celebrating the 60th anniversary of the PLA Navy's founding.