Vernazza Autogru has utilised its Demag CC 6800 and CC 3800-1 crawler cranes to lift a 1,050-tonne gantry crane in the Italian province of Massa-Carrara.
The gantry had to be disassembled to make way for future development at the shipyard site. In addition to the crawlers, Vernazza Autogru deployed a TC 2800 and an AC 250-1 in order to take care of secondary lift operations.
The CC 3800‑1 was set up in an SSL_1 configuration, with a 78-m lattice boom, 50 tonnes of central ballast, 165 tonnes of superstructure counterweight, and 285 tonnes of Superlift counterweight. Meanwhile, for the CC 6800, the Vernazza team decided on an SSL configuration, a 66-m lattice boom, 80 tonnes of central ballast, 250 tonnes of superstructure counterweight, and 400 tonnes of Superlift counterweight.
During the lift, the maximum load handled by the CC 6800 was 730 tonnes at a radius of 16 m, while the CC 3800‑1 handled a maximum of 320 tonnes at a radius of 18 m.