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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]
An offshore crane shock absorber is a gas spring with hydraulic damping used to reduce dynamic loads during offshore lifting. The lifting capacity of the offshore crane can be increased significantly during lifting in high sea states if a shock absorber is fitted.
Chang founded Yantai Raffles Offshore Limited (YRS) in 1994. Previously, he had worked with various companies in Singapore and Malaysia in the marine industry, including Mobil, Jardine Offshore, M.J Batty and Far East Shipyard (now known as Keppel FELS) between 1965 and 1970. In 1971, he started his own company, Promet (now known as PPL), which ...
A level-luffing crane is a crane mechanism where the hook remains at the same level while luffing: moving the jib up and down, so as to move the hook inwards and outwards relative to the base. [ 1 ] Usually the description is only applied to those with a luffing jib that have some additional mechanism applied to keep the hook level when luffing.
Commercial offshore cranes usually use a Motion reference unit (MRU) or pre-set measurement position detection to detect the current ship displacements and rotations in all directions. [1] A control system, often PLC or computer based, then calculates how the active parts of the system are to react to the movement. [2]
When delivered in 2014, it was the world's largest liftboat. The molded steel hull dimensions are 60m x 54m x 6m, and it is capable of working in water depths up to 367 feet. It has two deck cranes, one leg encircling around the starboard jackcase, and the other a pedestal crane on the port side of the vessel.
In July 2013, RHB Research reported that 85% of Favelle Favco's 2013 year-to-date crane orders were offshore cranes. [ 11 ] The company also specializes in tower cranes that can lift heavy loads quickly, [ 7 ] with the Favelle Favco M760's top lift speed at 160 metres (520 ft) per minute. [ 12 ]
These requirements, along with additional safety-related aspects of crane design, are established by the American Society of Mechanical Engineers in the volume ASME B30.5-2018 Mobile and Locomotive Cranes. Standards for cranes mounted on ships or offshore platforms are somewhat stricter because of the dynamic load on the crane due to vessel motion.
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