Introduction
Overall: length 121 m, breadth 25 m, depth 8.5 m
Navigation: self-propelled in open sea areas, service speed 13 knots
Positioning: dual system – steel pile positioning + triple-cable positioning
Working capacity: maximum dredging depth 38 m (45°), maximum dredging angle 65°
Cutter power: 8000 kW; cutter yield strength: 1400 MPa
Total installed power: 35775 kW
Mud pump (clean water): flow rate 23000 m³/h, head 80 m
Discharge Pipe diameter: DN 1150
Download :
General Arrangement.pdf
GA Drawing:
Key Distinguishing Features:
· Autonomous Navigation: Self-propelled design eliminates tugboat dependency, reducing operational costs by 30-40% on offshore projects
· Deep-Water Capability: 30-meter maximum dredging depth handles the most challenging offshore excavation requirements
· Discharge Distance: 8000-meter discharge distance enables efficient material transport to distant reclamation sites
· Industrial-Grade Automation: Advanced PLC control system with real-time monitoring optimizes cutting efficiency and reduces operator fatigue
Ideal Applications:
· International container port deepening projects
· Trans-oceanic shipping channel excavation
· Large-scale offshore airport construction
· Coastal city expansion and land reclamation
· Deep-water berth construction for VLCC tankers
Technical Advantages:
The high-torque 1500kW Cutter Head effortlessly handles consolidated clay, compacted sand, and soft rock formations. Combined with our proprietary suction system, this CSD maintains consistent productivity even in challenging seabed conditions that would slow conventional dredgers.
Target Customers:
National port authorities, international dredging contractors, major infrastructure developers managing projects exceeding $50 million USD.
FAQ:
Extra-large 8,000 m³/h Self-Propelled Cutter Suction Dredger (CSD)
Q1: Is the 8,000 m³/h production capacity achievable in all soil conditions?
A: The rated capacity of 8,000 m³/h is based on standard sand/silt conditions. For harder materials like stiff clay or weathered rock, the output will vary depending on the cutter power and soil hardness. However, our vessel is equipped with a high-torque cutter drive (e.g., 4,000+ kW) and wear-resistant alloy cutter heads, ensuring maximum efficiency even in challenging geological conditions. We provide specific production estimates based on your site’s soil investigation report.
Q2: What is the maximum digging depth and discharge distance?
A: Designed for deep-water projects, this model typically achieves a maximum digging depth of 38 meters . With its powerful Dredge Pumps (often arranged in series or booster configurations), it supports a total discharge distance of over 10–15 kilometers without needing relay stations, significantly reducing operational complexity.
Q3: How does the self-propelled feature improve efficiency compared to non-self-propelled CSDs?
A: The self-propelled capability allows the vessel to transit between job sites or reposition within a large area without tugboat assistance. This saves significant mobilization time and costs. Additionally, during operation, the propulsion system aids in precise DP-assisted positioning (optional) or spud carriage movement, enhancing stability in currents and waves.
Q4: Can this large vessel navigate through shallow channels or locks to reach the work site?
A: While designed for deep-water operation, we offer options for draft optimization during transit. Some models feature retractable spuds or adjustable ladder angles to reduce draft. For extremely restricted waterways, we can provide a modular transport solution where key components are disassembled for shipping and reassembled on-site, though the self-propelled hull is typically designed for direct ocean-going transit.
Q5: What is the cutter power, and what soil types can it excavate?
A: Cutter power: 8000kW; Cutter yield strength: 1400MPa, Impact energy: > 70J, capable of excavating coral reefs and hard seabed rocks.
Self-propelled Cutter Suction Dredgers (CSDs) are indeed rare compared to conventional non-self-propelled CSDs, but they offer several distinct advantages—especially in projects requiring mobility, flexibility, or rapid deployment. Here are the key benefits:
1. Enhanced Mobility and Relocation Efficiency
Self-propelled CSDs can move independently between Dredging sites without needing tugboats or Barges.
This significantly reduces transit time and associated costs (e.g., tug rental, crew coordination), especially in large or complex waterway networks.
2. Faster Project Mobilization and Demobilization
They can quickly arrive at remote or hard-to-access locations, accelerating project start-up.
Ideal for emergency dredging (e.g., after storms or floods) where time is critical.
3. Greater Operational Flexibility
Can reposition precisely during operations using their propulsion system (often combined with dynamic positioning or spud carriage systems).
Enables more efficient dredging in confined or congested areas (e.g., ports, urban canals).
4. Reduced Dependency on External Support Vessels
Eliminates or minimizes the need for tugs, anchor handling boats, or transport barges, simplifying logistics and lowering operational complexity.
5. Improved Safety During Transit
Designed as integrated, seaworthy vessels, self-propelled CSDs generally offer better stability and safety when transiting open waters compared to non-self-propelled units being towed.
6. Potential for Multi-Role Use
Some advanced self-propelled CSDs can be equipped for auxiliary tasks (e.g., rock cutting, environmental dredging, or even light offshore support), increasing asset utilization.
Trade-offs to Consider:
Higher initial cost: Complex propulsion systems increase capital expenditure.
Increased maintenance: More onboard machinery requires greater upkeep.
Larger draft or size: May limit access to very shallow areas compared to modular or smaller non-self-propelled CSDs.
Real-World Examples:
The “Spartacus” (built by DEME, Belgium) is one of the world’s largest and most advanced self-propelled CSDs, capable of operating in harsh offshore conditions.
Chinese-built self-propelled CSDs like the “Tian Kun Hao” demonstrate national advancements in high-performance dredging technology with autonomous navigation features.
Conclusion:
While traditional non-self-propelled CSDs remain dominant due to cost-effectiveness for fixed-location projects, self-propelled CSDs excel in scenarios demanding speed, autonomy, and operational agility—making them valuable assets for large-scale, multi-site, or emergency dredging operations.
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