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The barge was built in Portland, Oregon by U.S. Barge, LLC [4] and ferried to Shanghai, where it was fitted with a shear-leg crane manufactured by Shanghai Zhenhua Port Machinery Co. Ltd (ZPMC). The completed sheerleg was ferried back to the United States on a semi-submersible heavy-lift ship, Zhen Hua 22 (IMO 8106446).
The crane barge was built by Kelso Marine in Galveston, Texas [6] [7] for Sun Shipbuilding in 1972 at a cost of nearly $5 million. [2] [8] At the time, it was the largest crane ship in the world. [8] The crane was initially able to lift 800 short tons (710 long tons; 730 t), and so was named Sun 800. [9]
A crane vessel, crane ship, crane barge, or floating crane is a ship with a crane specialized in lifting heavy loads, typically exceeding 1,500 t (1,476 long tons; 1,653 short tons) for modern ships. The largest crane vessels are used for offshore construction .
The Port of Baltimore shared an image of the crane barge, Donjon's Chesapeake 1000, which ABC News reported was onsite Friday morning at the site of the Francis Scott Key Bridge. The span ...
A $1.5 million grant from the National Oceanic and Atmospheric Administration will cover the cost of extracting the 114-foot crane-topped barge from the spot where it sunk in a fall nor'easter ...
The floating barge-crane, originally named Marine Boss, was built for Murphy Pacific Marine.The barge was assembled by Zidell Explorations from scrapped ship steel in Oregon [2] in 1966 and fitted in San Francisco with a heavy 500-ton revolving crane made by Clyde Iron Works [3] to perform the heavy girder and deck-section lifts for construction of the 1967 San Mateo-Hayward Bridge.
Ajax is a floating crane built to move and install the canal locks and other large parts of the Panama Canal. Ajax also helped in ship repairs and clearing the canal as needed. Ajax and her identical sister crane, the Hercules, were the largest floating cranes at time of completion, able to install the massive Panama Canal locks.
The barges are then placed in position near shore, where the crane-bearing barge then unloads the caissons and threads them through the wells of the component barges. The crane then operates a pile driver on each caisson to drive it into the seafloor. After this, the specially designed pneumatic jacks are lowered over the caissons, secured to ...
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