Introduction
Dredger is a specialized engineering vessel used for projects such as channel dredging, port construction, and land reclamation. It plays a crucial role in marine engineering by excavating and suctioning seabed sediments and transporting them to designated locations.
|
Main parameters |
Hull size (L*W*H) |
Clean water flow |
Total installed power (KW) |
Dredging depth |
Dredging pump |
Trolley travel |
|
8 inches (single unit) |
16×4.26×1.5m |
>900m³/h |
295 |
6m |
250WN |
- |
|
8/10 inches (dual unit integrated) |
23.6×3. 8×1.5m |
>750m³/h |
384 |
8m |
200WN |
2.5m |
|
10 inches (dual unit) |
29.6×5.28×1.6m |
1200m³/h |
578 |
10m |
250WN |
- |
|
12 inches |
42.8×7.1×2m |
>2000m³/h |
993 |
13m |
300WN |
2.5m |
|
14 inches |
40.5×7.6×2m |
3000m³/h |
1099 |
14m |
350WN |
2.5m |
|
18 inches (Class A navigation area) |
46.72×8.8×2.2m |
3500-4000m³h |
1803 |
14m |
450WN |
2.5m |
|
18 inches (Class B navigation area) |
45.7×8.06×2.2m |
>3500m³/h |
1453 |
14m |
450WN |
2.5m |
|
18 inches (Class B navigation area) |
37.6×8.06×2.2m |
>3500m³/h |
1453 |
14m |
450WN |
- |
|
20 inches (Class A navigation area) |
45.5×8.06×2.2m |
>6000m³/h |
2855 |
14m |
500WN |
2.5m |
|
22 inches |
47.5×8.9×2.7m |
6000-8000m³/h |
3014 |
14m |
550WN |
2.5m |
|
24 inches |
49.5×11.4×3m |
7000-9000m³/h |
4280 |
21m |
Submersible pump:600WN Overwater pump:600WN |
2.5m |
Core Features & Advantages
(1) High Operational Efficiency
-High-power excavation systems: Modern dredgers are equipped with heavy-duty cutterheads, dragheads, or pump systems, capable of breaking hard soil or rapidly suctioning silt.
-Continuous operation: Cutter suction and trailing suction hopper dredgers enable a seamless "dig-transport-discharge" process without frequent stops (e.g., some hopper dredgers can carry 30,000 m³ per load).
(2) Precision Construction Control
-Dynamic Positioning (DP): Uses GPS and sensors to adjust the vessel's position in real time, with <10 cm error, suitable for complex sea conditions.
-Automated dredging systems: Intelligently regulate digging depth and slurry density to avoid over-dredging or under-dredging (e.g., Dutch company IHC's Adaptive Trenching technology).
(3) Versatile Adaptability
-Modular design: Interchangeable cutterheads, dragheads, and other tools allow adaptation to different seabed materials (sand, clay, coral, etc.).
-Long-distance transport: Cutter suction dredgers can pump sediments up to 15 km away via floating or shore pipelines
(4) Work Efficiency: Production capacity of 20m³ to 2500m³ per hour
(5) Adaptability: Stable operation in water depths of 5-35 meters, with remote conveying capability of 100-3800 meters
(6) Technical Advantage: Equipped with a mechanical drive system for sustained high-efficiency operation
(7) Eco-Friendliness & Safety
- Low-turbidity technology: Trailing suction hopper dredgers use eco-friendly dragheads to minimize sediment dispersion and marine ecosystem impact.
- Storm resistance: Self-propelled dredgers can operate in Sea State 4-5, ensuring safety. Comparison with Traditional Methods
|
Aspect |
Dredger |
Traditional Land Machinery / Manual Dredging |
|
Efficiency |
Thousands of m³/hour (e.g., cutter suction: 4,500 m³/h) |
Low efficiency, reliant on trucks/excavators |
|
Applicability |
Deep water, open seas, complex seabeds |
Limited to shallow/nearshore areas |
|
Cost-Effectiveness |
High initial cost but lower long-term expenses |
High labor costs, prolonged timelines |
|
Environmental Impact |
Controlled discharge, minimal ecological harm |
Risk of coastal pollution & sediment resuspension |
|
Precision |
Centimeter-level accuracy, automated control |
Manual operation, higher error margins |
Advantages in Different Construction Scenarios
(1)Land Reclamation
Benefit: Cutter suction dredgers directly pump fill material, eliminating transport steps(e.g., Dubai's Palm Island project saved 30% time).
(2)Channel Maintenance
Benefit: Trailing suction hopper dredgers operate while moving, avoiding port disruptions.
(3)Ecological Restoration
Benefit: Precise removal of contaminated sediments prevents pollutant spread (e.g., San Francisco Bay cleanup).
Cutting-Edge Technological Trends
(1)Smart dredging (AI, automation)
(2)Green technology (low-emission, eco-friendly designs)
(3)Mega-dredgers (ultra-large capacity for massive projects)
Q&A
(1)Q:When can I get the price?
A:Usually we quote within 8 hours after we get your inquiry.
(2)Q:Do you have the test and audit service?
A:Yes, we can assist to get the designated test report for product and the designated factory audit report.
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Quality Control
Implement ISO system, monitor production throughout the process, and ensure that equipment meets standards.
-
Professional Testing
Advanced equipment testing, strict performance testing, to ensure stable operation.
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After-sales Service
24-hour response, one-year warranty.
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Continuous Improvement
Collect customer feedback, optimize product performance, and enhance use value.
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