The cranes are being operated by Dutch crawler specialist Crane House and working up to 24 hours a day at the €1bn project at Dunkirk, France.
With capacities from 250t-400t, the cranes were first used on the site in 2011, when a Manitowoc 16000 and a 272t Manitowoc 2250 were used for six months to install underwater foundations and a floating flat barge.
In mid-2013, another 16000 joined the project, followed by a second 2250 and a Manitowoc 15000 model. The 16000, as the largest crane on the site, is rigged with a 96m boom.
The cranes have worked along the shoreline at the project, with one assembled on an off-shore platform. They were recently used to assist the construction of the terminal jetty, primarily through pouring concrete.
The project, which is being overseen by a consortium lead by French contractor Vinci, is due to be completed next year.
