Chen-1 bottom mine

From Wikipedia, the free encyclopedia

The Sinking-1 (沉-1, or Chen-1) naval mine is the fourth type of naval mine entering Chinese service in 1966. It is a bottom mine jointly developed by the 710th research institute, the 152nd Factory and Fengxi Machinery Factory (汾西机器厂), and it was the first Chinese naval mine utilizing an acoustic fuse.