Chinese Research Ship Beidiao 991 is a research ship that has served both in civilian use and in the People's Liberation Army Navy (PLAN). It was built...

class ocean surveillance ships : 2 Shuguang class with pennant # Beidiao (北调) 994 and Beidiao 998 have retired. Type 64 demolition boat: all units have retired...

Wuhu-B-class) Sonar trials 1 Chinese sonar trials ship Beidiao 993 (NATO designation Beidiao-class) Experimental ships Chinese target ship Experiment...