Backhoe Dredgers

"Robust. Reliable. Ready for Complex Dredging Challenges."
Built to handle hard and compact materials—including clay, gravel, and rock—these dredgers excel where others struggle. Their low turbidity operation minimizes environmental impact, making them a preferred choice for sensitive or regulated work zones.
Our newly acquired ROL ATLAS embodies these capabilities—delivering consistent performance, high operational control, and the reliability required for today’s most demanding dredging challenges.

Trailing Suction Hopper Dredger

Trailing suction hopper dredgers are versatile vessels widely used in various dredging operations, including:
- Port and waterway construction and maintenance
- Land reclamation Projects
- Artificial island development
- Coastal protection and beach nourishment


How It Works
A TSHD operates by lowering one or more suction pipes to the seabed while sailing at a controlled speed. Attached to the end of each pipe is a draghead, which loosens and collects sediment. This material is then drawn up through the suction pipe by powerful dredge pumps and stored in the vessel’s hopper.

Once fully loaded, the dredger sails to a designated disposal or reclamation site, where the dredged material is discharged in one of the following ways:
- Through bottom doors for direct underwater disposal
- Via discharge pipeline to an offshore or onshore location
- By rainbowing, using a high-pressure jet to spray material onto beaches or reclamation areas

This efficient method of dredging ensures precise sediment removal while helping to minimize
environmental impact.

Cutter Suction Dredger

A cutter suction dredger (CSD) is a high-powered dredging vessel specifically designed for the excavation and removal of sediment from water bodies. Commonly used for waterway maintenance, harbour deepening, and land reclamation, CSDs are highly effective in cutting through compacted soils, clay, and even rock, making them indispensable for large-scale and demanding dredging operations.

Unlike trailing suction hopper dredgers, CSDs operate while anchored in a fixed position. A rotating cutter head breaks up the seabed material, which is then sucked up and transported through a discharge pipeline. This setup ensures precise excavation and controlled material placement, particularly important in environmentally sensitive or structurally complex areas.

How it Works
The operation of a cutter suction dredger centers around three key components:
• Cutter head: This rotating mechanism, breaks up compact material at the seabed or riverbed.
• Suction pipe: Once the material is loosened, it is sucked up through a powerful suction system.
• Dredge pump: The collected material is then transported via a pipeline to a designated disposal area or reclamation site.

To maintain stability and maneuver gradually during dredging, CSDs use spud poles and winches. This enables precise and continuous excavation, even in challenging underwater environments.

Hopper Barge

Hopper barges play a vital role in dredging operations. After dredged materials are collected by a dredger, they are transferred into the hopper of the barge. Once the barge reaches the disposal area. It then releases the load with precision and minimises the environmental footprint. Their versatility and reliability make them a trusted tool for both nearshore and offshore projects.

Seabed Leveller

Seabed levelling is a specialized dredging technique used to smooth and reprofile the ocean floor by redistributing accumulated sediments into nearby low-lying areas. This method is particularly effective for refining seabed contours after dredging or for preparing sites prior to marine construction.

How it works?
A seabed leveller is a purpose-built tool designed specifically for sea floor profiling. Towed behind a vessel, the leveller gently redistributes excess silt, sand, or spoil mounds across the seabed—eliminating high spots and filling in depressions. This technique offers a cost-effective and environmentally friendly solution for:
• Deepening and widening navigation channels
• Levelling silt and sand deposits in berth pockets
• Post-dredging clean-up and seabed finishing
• Supporting trailing suction hopper dredgers and other dredging operations
By reducing the need for additional dredging, seabed levelling ensures efficient seabed management with minimal environmental disturbance.