Search results
Results From The WOW.Com Content Network
Sheerlegs mounted on an M32 tank recovery vehicle. Shear legs, also known as sheers, shears, or sheer legs, are a form of two-legged lifting device.Shear legs may be permanent, formed of a solid A-frame and supports, as commonly seen on land and the floating sheerleg, or temporary, as aboard a vessel lacking a fixed crane or derrick.
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.
Two guy derricks at a granite quarry. A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self-supporting tower, and a boom hinged at its base to provide articulation, as in a stiffleg ...
Lodbrok is a floating crane, in the harbor of Ystad 2020. 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. [1]
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 Chesapeake 1000 – a gargantuan floating crane – arrived Friday near the scene where a 213-million-pound cargo vessel slammed into the Francis Scott Key Bridge, destroying the vital ...
The smaller cranes start at around 50 tons [which?] in lifting capacity, with the largest being able to lift 20,000 tons. The bigger sheerlegs usually have their own propulsion system and have a large accommodation facility on board, while smaller units are floating pontoons that need to be towed to their workplace by tugboats.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!