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A pontoon bridge is a collection of specialized, shallow draft boats or floats, connected together to cross a river or canal, with a track or deck attached on top. The water buoyancy supports the boats, limiting the maximum load to the total and point buoyancy of the pontoons or boats. [ 2 ] The supporting boats or floats can be open or closed ...
Comparison of deepwater semi-submersible (left) and drillship (right) A semi-submersible platform is a specialised marine vessel used in offshore roles including as offshore drilling rigs, safety vessels, oil production platforms, and heavy lift cranes. They have good ship stability and seakeeping, better than drillships.
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 ...
The PMP Floating Bridge ( Russian: Понтонно-мостовой парк, ПМП "pontoon / bridge park") is a type of mobile pontoon bridge designed by the Soviet Union after World War II. The bridge's design enables for a quick assembly of its parts. [1] It has a carrying capacity of 60 tons. [1] The bridge was originally mounted on a ...
Auxiliary Floating Docks, Light (AFDL), also known as Auxiliary Floating Docks (AFD), were 288 ft (88 m) long, had a beam of 64 ft (20 m), and draft of 3 ft 3 in (0.99 m) empty and 31 ft 4 in (9.55 m) flooded to load a ship. A normal crew was 60 men. AFDL displacement was 1,200 tons and could lift 1,900 tons.
A jackup rig is a barge fitted with long support legs that can be raised or lowered. The jackup is maneuvered (self-propelled or by towing) into location with its legs up and the hull floating on the water. Upon arrival at the work location, the legs are jacked down onto the seafloor. Then "preloading" takes place, where the weight of the barge ...
Toll. $1.25–$6.30. Location. The Evergreen Point Floating Bridge, also known as the 520 Bridge and officially the Governor Albert D. Rosellini Bridge, carries Washington State Route 520 across Lake Washington from Seattle to its eastern suburbs. The 7,710-foot-long (2,350 m) floating span is the longest floating bridge in the world, [ 3] as ...
Left Coast Lifter. Left Coast Lifter is a floating derrick barge or sheerleg which was built to assist in the eastern span replacement of the San Francisco–Oakland Bay Bridge. The barge carries a shear legs crane which is the largest barge crane ever used on the U.S. West Coast. The barge's name is taken from "Left Coast", a slang phrase that ...
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