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2. Very large floating structure - Wikipedia

   en.wikipedia.org/wiki/Very_large_floating_structure

   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 ...

3. Pontoon bridge - Wikipedia

   en.wikipedia.org/wiki/Pontoon_bridge

   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.

4. Semi-submersible platform - Wikipedia

   en.wikipedia.org/wiki/Semi-submersible_platform

   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.

5. Crest Marine - Wikipedia

   en.wikipedia.org/wiki/Crest_Marine

   Crest Marine LLC is a boat manufacturer in Owosso, Michigan which makes Crest Pontoons. The pontoon boats were originally built by Maurell Products, whose owner Maurice Schell ran the company for almost 50 years. [ 1] [ 2] In 2010 the company was purchased by a small group of Detroit, Michigan -based investors who renamed the business Crest Marine.

6. List of pontoon bridges - Wikipedia

   en.wikipedia.org/wiki/List_of_pontoon_bridges

   Replacing a private ferry when it opened in 1891, the movable structure operated as a toll bridge. It was used until January 1929, when a toll-free bridge of concrete and steel replaced it at a cost of $600,000. Once considered the longest pontoon bridge in the world at 2,150 feet, its original construction cost $35,000.

7. Left Coast Lifter - Wikipedia

   en.wikipedia.org/wiki/Left_Coast_Lifter

   Left Coast Lifter made its first lift on the new Tappan Zee bridge in April 2015, [22] a steel-reinforced concrete pile cap which formed part of the bridge's foundation. The massive crane was being used for heavy lifts of large bridge sections, [ 23 ] and placed the final steel girder for the new Rockland-bound (westbound) span in October 2016 ...