page_title: Layout of the Port of Tianjin
section_title: Shiplocks and tidal barriers
hierarchical_section_title: Layout of the Port of Tianjin / Port fairway / Shiplocks and tidal barriers
caption_attribution_description: English: The Second Tidal Barrier closes the upper Haihe to navigation (and makes the lower Haihe into essentially a static reservoir)
context_page_description: The Port of Tianjin is divided into nine areas: the three core areas of Beijiang, Nanjiang, and Dongjiang around the Xingang fairway; the Haihe area along the river; the Beitang port area around the Beitangkou estuary; the Dagukou port area in the estuary of the Haihe River; and three areas under construction.
context_section_description: The Haihe river channel is separated from the sea channels by three structures: First, 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. It was started by the Japanese occupation forces in 1942, completed in 1943 and made operational by the Nationalist government after the war, in 1946. It has a width of 20.5 m, a length of 180 m and cill depth of 5 m. It allows passage to vessels up to 18.5 m wide, limited to 17.5 m at night and for ships carrying liquid bulk or otherwise dangerous cargoes. The Haihe Bridge is directly over the shiplock, with an air clearance of 39.5 m.
  Second, 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. It is an open sluice design, with 8 vertical-rising gates designed for an average flow of 1,200 m³/s flow when open, with a maximum flow of 1,689 m³/s recorded on 28 August 1963.
  Third, the Tanggu Fishing Boat Lock (Chinese: 塘沽渔船闸; pinyin: tánggū yúchuánzhá) is located at the western end of the channel between Donggu and Lanjingdao Island. Built in 1959, it is 150 m long, 14 m wide, 8 m ditch depth, with cill water depth of 2.5 m. It can handle ships of up to 200 gt. 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: The Haihe Second Barrier from the east.
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