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china's largest self-propelled 1, named tian kun hao, returned to qidong shipyard in jiangsu province after its first trial voyage, reports xinhua news agency.
中国最大的自航绞吸船天鲲号首次试航结束已返回江苏启东船厂。
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the ship, which is owned by china communications construction company, was launched in october. it then started a month-long test of its 2 dredging system, which it passed with flying colors.
it took the ship's owner five years to develop a stable and high-efficiency dredging process, which the ship can manage automatically.
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