Recently Mammoet erected a new Goliath crane at Meyer Turku shipyard in Finland – the biggest Goliath crane in Northern Europe with a capacity of 1,200 ton, a span of 154 meters and a height of 120 meters. The installation of the crane is an important milestone for the shipyard since it will help fulfil new orders for increasingly larger cruise ships. Mammoet was chosen to erect the new Goliath crane for its all-round solution that reduced assembly time, minimized risk and had the least amount of impact on the operational shipyard.
Minimum amount of disruption
Limited working space on-site was one of the main concerns since the Goliath crane needed to be erected parallel to ongoing construction work on the cruise ships. Mammoet provided an installation method that required the least amount of space allowing the shipyard to stay operational with a minimum amount of disruption. The key to the most space-efficient method was using the legs of the Goliath crane as part of the installation equipment. By first erecting the legs, these could then be used as a gantry to raise the main girder – without the need for additional equipment.
Mammoet used two cranes, a CC6800 and a LR11000, to erect the 540 and 700-ton legs of the crane. Two additional 500-ton crawler cranes were positioned at each side of the legs to install the strand jacks for lifting the app. 2,500-ton main girder. To increase safety and efficiency, Mammoet fully preassembled the strand jacks on ground level enabling to lift them to the top of the legs in one go. Furthermore, Mammoet designed various custom lifting tools to make the installation and removal work safer and more efficient.
With the new Goliath crane installed safely and on schedule, the shipyard could quickly return to production with increased capacity.