page_title: Port of Tianjin
section_title: Shiplocks and tidal barriers
hierarchical_section_title: Port of Tianjin / Port fairway / Shiplocks and tidal barriers
caption_attribution_description: English: Tanker leaving the Xingang Shiplock into the main harbor. The gates are also drawbridges that are the main passenger route into the Nanjiang Island
context_page_description: The Port of Tianjin, formerly known as the Port of Tanggu, is the largest port in Northern China and the main maritime gateway to Beijing. The name "Tianjin Xingang", which strictly speaking refers only to the main seaport area, is sometimes used to refer to the whole port. The port is on the western shore of the Bohai Bay, centred on the estuary of the Haihe River, 170 km southeast of Beijing and 60 km east of Tianjin city. It is the largest man-made port in mainland China, and one of the largest in the world. It covers 121 square kilometers of land surface, with over 31.9 km of quay shoreline and 151 production berths at the end of 2010.
  Tianjin Port handled 500 million tonnes of cargo and 13 million TEU of containers in 2013, making it the world's fourth largest port by throughput tonnage and the ninth in container throughput. The port trades with more than 600 ports in 180 countries and territories around the world. It is served by over 115 regular container lines. run by 60 liner companies, including all the top 20 liners.
context_section_description: The Haihe river channel is separated from the sea channels by three structures: 
  The Xingang Shiplock (Chinese: 新港船闸; pinyin: xīngǎng chuánzhá) in the northern side of the estuary is the main shipping route into the Haihe area.
  The Haihe Tidal Barrier (Chinese: 海河防潮闸; pinyin: hǎihé fángcháozhá), built in 1958, and last refurbished in 1999, serves as a dam, flood control sluice and tide surge protection for the Haihe river mouth.
  The Tanggu Fishing Boat Lock (Chinese: 塘沽渔船闸; pinyin: tánggū yúchuánzhá) is at the western end of the channel between Donggu and Lanjingdao Island. In 2011, the Fishing Boat Lock gates started to be rebuilt to allow for larger road traffic between Donggu and Lanjingdao.
  The final hydraulic structure of the Tianjin Port is the Haihe Second Barrier (Chinese: 海河二道闸; pinyin: hǎihé èrdàozhá) at Dongnigucun, in the Jinnan district. The Second Barrier is also an open-type sluice barrier, with 8 vertical-rising gates allowing an average flow of 1200 m³/s. The barrier, opened in July 1984, closes ship traffic upriver into Tianjin city proper, and its erection resulted in the abandonment of 29.3 km of navigable channel.
caption: A ship passing from the Haihe into the Xingang seaport through the Xingang Shiplock
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