Dredging

Material handling made easy

Dredging is necessary when sediment settles, causing shallow water that restricts shipping. Another possible application is in the excavation of sand from the seabed in the course of land reclamation. In doing so, the duty cycle crawler cranes must endure high dynamic forces. Their robust design makes them perfectly suited to these kinds of material handling operation.

Service life

The HS-series of material handling machines is designed for a particularly long service life. Increased steel thicknesses and high-quality materials ensure maximum robustness in continuous, dynamic operation. Designed to meet class A7 and A8 standard for reliable power under the toughest conditions.

Energy-saving hydraulics

Closed hydraulic circuits enable precise control while consuming less energy. Liebherr duty cycle crawler cranes combine maximum performance with free-fall winches and benefit from Liebherr’s many years of experience developing their own hydraulics – for high availability and reliable operation. The patented Pactronic® hybrid technology also ensures more power from less energy.

Contact us

Should you have any queries, please do not hesitate to contact your local sales or customer service team.

GrabMatic

The GrabMatic software systems support the operator with intelligent assistance systems and make working with the machine easier, safer and more precise. Its functions include:

Grab visualisation for optimal working processes
Creating a level surface on the seabed
Optimised filling of the grab for maximum efficiency
Prevention of slack rope and synchronised winch movements for smooth, even processes

Job reports

On an icy mission: HS 8200

Around 250 kilometres north of the Arctic Circle, Liebherr is part of the largest construction project in Greenland’s history. Munk Civil Engineering is carrying out dredging work for two airport projects with the HS 8200 duty cycle crawler crane. The Arctic conditions and the logistics pose a particular challenge.

Dredging operations in the Port of Piombino

The largest of Liebherr’s duty cycle crawler cranes yet – the type HS 8300 HD – is currently carrying out dredging work in Piombino. The aim of the project is to remove deposited sediment from the mouth of the port and also to increase the depth of the water. For this purpose, the hybrid duty cycle crawler crane is equipped with a hydraulic clamshell grab with a filling capacity of 22 m³.

HS 8100.1 duty cycle crawler crane in action on the coast of Florida

A Liebherr HS 8100.1 was put to work on a pontoon off Florida coast to excavate around 50,000 cubic yards (approx. 38,000 cubic metres) of material from a pontoon over a period of two months. The machine worked between 10 and 12 hours a day for the entire duration of the project. It was the impressive reliability and performance of the Liebherr duty cycle crawler crane that were critical to its selection.