a pair of Type 730 CIWS. Other The CDS installed on the Type 052 is unclear. One ship may have received the Thomson-CSF TAVITAC; the PRC bought two TAVITACs from France in the 1980s. The TAVITAC may be known as, or modified into, the ZKJ-5 CDS in PRC service. The other ship may have received the ZKJ-6. The quarterdecks were built open, and enclosed during the 2010 refit. The ships may have had severe survivability issues like earlier PLAN warships. Observations by foreign visitors to Harbin in March 1997 suggested limited damage control capability and crew safety features. Operational history Qingdao participated in the PLAN's first cruise to circumnavigate Earth in 2002. German technicians were flown in to repair its diesel engines during the cruise. Ships of the class Gallery See also List of naval ship classes in service References Bibliography Destroyer classes