H/ZKJ series and its derivative H/ZKT series naval systems are Chinese combat data /management systems (CDS/CMS) installed onboard Chinese surface combatants of the People's Liberation Army Navy (PLAN), and they are usually referred as ZKJ and ZKT for short. The designation is an abbreviation of Pinyin: H for Haijun (海军, meaning naval in Chinese), Z for Zhihui (指挥, meaning command in Chinese), and K for Kongzhi (控制, meaning control in Chinese), J for Jian (舰, meaning ship in Chinese) and T for Ting (艇, meaning boat in Chinese).