What is the longest canal in the world?
5623#27
In ancient China, large canals for river transport were established as far back as the Spring and Autumn Period (8th–5th centuries BC), the longest one of that period being the Hong Gou (Canal of the Wild Geese), which according to the ancient historian Sima Qian connected the old states of Song, Zhang, Chen, Cai, Cao, and Wei. The Caoyun System of canals was essential for imperial taxation, which was largely assessed in kind and involved enormous shipments of rice and other grains. By far the longest canal was the Grand Canal of China, still the longest canal in the world today and the oldest extant one. It is long and was built to carry the Emperor Yang Guang between Zhuodu (Beijing) and Yuhang (Hangzhou). The project began in 605 and was completed in 609, although much of the work combined older canals, the oldest section of the canal existing since at least 486 BC. Even in its narrowest urban sections it is rarely less than wide.
Canal
49824#0
The Grand Canal, known to the Chinese as the Beijing–Hangzhou Grand Canal ("Jīng-Háng Dà Yùnhé"), a UNESCO World Heritage Site, is the longest as well as the oldest canal or artificial river in the world. Starting at Beijing, it passes through Tianjin and the provinces of Hebei, Shandong, Jiangsu and Zhejiang to the city of Hangzhou, linking the Yellow River and Yangtze River. The oldest parts of the canal date back to the 5th century BC, but the various sections were first connected during the Sui dynasty (581–618 AD). Dynasties in 1271-1633 significantly rebuilt the canal and altered its route to supply their capital Beijing.
Grand Canal (China)
12430037#2
The honour for the first summit-level canal therefore goes to the Grand Canal of China. This was started in the 4th century BCE with major extensions in 329 CE, and used single locks until the 10th century when pound locks were introduced. But it was the rerouting of the canal in the 1280s to shorten the connection to the new capital Beijing at the start of the Yuan dynasty, crossing the Yangtze and Yellow Rivers, that established it as a summit-level canal. It remained into the modern era as the longest canal in the world at .
Summit-level canal
208265#25
In winter, a section of the Rideau Canal passing through central Ottawa becomes officially the world's largest and second longest skating rink. The cleared length is and has the equivalent surface area of 90 Olympic ice hockey rinks. It runs from the Hartwell locks at Carleton University to the locks between the Parliament Buildings and the Château Laurier, including Dow's Lake in between. It serves as a popular tourist attraction and recreational area and is also the focus of the Winterlude festival in Ottawa. Beaver Tails, a fried dough pastry, are sold along with other snacks and beverages, in kiosks on the skateway. In January 2008, Winnipeg, Manitoba, achieved the record of the world's longest skating rink at a length of 8.54 kilometres but with a width of only 2 to 3 metres wide on its Assiniboine River and Red River at The Forks. In response, the Rideau Canal was rebranded as "the world's largest skating rink". The Rideau Canal Skateway was added to the Guinness Book of World Records in 2005 for being the largest naturally frozen ice rink in the world.
Rideau Canal
1247088#1
The northern end is about from the northern end of the Grand Junction Canal at Braunston, Northamptonshire and the southern end about .
At 3,076 yards (2,813m) long it is the third-longest navigable canal tunnel on the UK canal network after Standedge Tunnel and Dudley Tunnel (and the ninth-longest canal tunnel in the world). At its deepest point it is "ca."143 feet ("ca."43m) below ground level.
Blisworth Tunnel
24346771#0
A canal tunnel is a tunnel for a (shipping) canal. The longest canal tunnel in the world is the Rove Tunnel in France, currently disused. The proposed Stad Ship Tunnel in Norway, while shorter, will be significantly wider and deeper, as it is designed to accommodate seagoing vessels.
Canal tunnel
193449#14
The ship canal took six years to complete at a cost of just over £15 million, equivalent to about £1.65 billion in 2011. It is still the longest river navigation canal and remains the world's eighth-longest ship canal, only slightly shorter than the Panama Canal in Central America. More than 54 million cubic yards (41,000,000 m³) of material were excavated, about half as much as was removed during the building of the Suez Canal. An average of 12,000 workers were employed during construction, peaking at 17,000. Regular navvies were paid d per hour for a 10-hour working day, equivalent to about £16 per day in 2010. In terms of machinery, the project made use of more than of temporary rail track, 180 locomotives, more than 6000 trucks and wagons, 124 steam-powered cranes, 192 other steam engines, and 97 steam excavators. Major engineering landmarks of the scheme included the Barton Swing Aqueduct, the first swing aqueduct in the world, and a neighbouring swing bridge for road traffic at Barton, both of which are now Grade II* listed structures. In 1909 the canal's depth was increased by to , equalling that of the Suez Canal.
Manchester Ship Canal
893248#0
The Hood Canal Bridge (officially William A. Bugge Bridge) is a floating bridge in the northwest United States, located in western Washington. It carries State Route 104 across Hood Canal of Puget Sound and connects the Olympic and Kitsap Peninsulas. At in length (floating portion ), it is the longest floating bridge in the world located in a saltwater tidal basin, and the third longest floating bridge overall. First opened in 1961, it was the second concrete floating bridge constructed in Washington. Since that time, it has become a vital link for local residents, freight haulers, commuters, and recreational travelers. The convenience it provides has had a major impact on economic development, especially in eastern Jefferson County.
Hood Canal Bridge
4301442#31
In January 2008, the Guinness Book of World Records recognized The Forks as the home of the longest skating rink in the world. The 8.54-kilometre-long Assiniboine Credit Union River Trail on the Assiniboine River and the Red River is almost 1 kilometer longer than the previous record-holding rink. The 7.8-kilometre long rink on the Rideau Canal in Ottawa, Ontario had lost its World Record title which it had held since 1971. Then in 2008 the rivers beat their own record which made the longest rink go to about 9.3-kilometres. The Rideau Canal still held the record for the "world's largest naturally frozen ice rink" by the Guinness Book of World Records because "its entire length receives daily maintenance such as sweeping, ice thickness checks and there are toilet and recreational facilities along its entire length". In 2013 the Assiniboine Credit Union River Trail lost its record to the Lake Windermere Whiteway at Invermere, British Columbia, Canada.
The Forks, Winnipeg
707567#7
Hood Canal is spanned by the Hood Canal Bridge, the third longest floating bridge in the world at . According to the Washington State Department of Transportation, the Hood Canal Bridge is the only floating bridge constructed on saltwater, although there are others, such as Nordhordland Bridge and Bergsøysund Bridge. The Hood Canal Bridge accommodates sixteen and a half foot tides.
Hood Canal