Two Chinese sailors take rigorous surveys on navigation course and speed as the visiting Chinese missile cruiser 113 (Qingdao) and US missile cruiser 93 (Zhongyun) carried out a six-hour-long joint marine communication and mobile drills on the sea near Hawaii Monday, Septermber 11, 2006. This is the first time the Chinese and US navies carry out such joint drills. [newsphoto]

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