A ring crane is a form of large construction crane with a luffing jib. It is distinguished by its slew pivot being in the form of a ring-shaped track, rather than a narrow central spindle. The broad base this gives to the slewing section above allows it to slew whilst carrying extremely heavy loads.
Mammoet PTC200-DS in Dubai, 2014
Mammoet is a privately held Dutch company specializing in engineered heavy lifting and transport of large objects.
Mammoet loading one of its own cars after a job in Utrecht.
Mammoet Office Building 'The Bollard' in Schiedam
Mammoet gantry system