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A pontoon bridge (or ponton bridge), also known as a floating bridge, uses floats or shallow- draft boats to support a continuous deck for pedestrian and vehicle travel. The buoyancy of the supports limits the maximum load that they can carry. Most pontoon bridges are temporary and used in wartime and civil emergencies.
Larger: 120,000 kg (260,000 lb) Largest: 180,000 kg (400,000 lb) The Mexeflote is a landing raft used by the United Kingdom's Royal Logistic Corps and the Royal Australian Navy to move goods and vehicles between ship and shore. It was first used by British military in the 1960s. It was used during the Falklands War, and has been used in ...
The 1917 video "Down the Old Potomac (Part 1 of 3)" shows the canal during its operating days. Some of the information is inaccurate. For example, it says that "barges" (more correctly "boats") passed through 86 locks descending 800 feet to tidewater; in fact, there were 77 locks descending 610 feet.
These semi-submersible crane vessels (SSCV) consist of two lower hulls (pontoons), three columns on each pontoon and an upper hull. Shortly after J. Ray McDermott and Saipem also introduced SSCVs, resulting in two new enormous vessels DB-102 (now Thialf ) and Saipem 7000 , capable of lifting respectively 14,200 and 14,000 tons.
Completed 2008. Spans 5,153.277 feet (1,571 m). Located near New Amsterdam in Guyana. Demerara Harbour Bridge. Completed 1978. Spans 6,074 feet (1,851 m). Located immediately south of Georgetown, Guyana, it is constructed with steel pontoon units and is the fourth longest floating bridge in the world.
Very large pontoon-type floating structures are often called ‘mega-floats'. As a rule, the mega-float is a floating structure having at least one length dimension greater than 60 metres (200 ft) Horizontally large floating structures can be from 500 to 5,000 metres (1,600 to 16,400 ft) in length and 100 to 1,000 metres (330 to 3,280 ft) in ...
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