Frequently Asked Questions

Dredge Yard specializes in three main types of dredgers: Cutter Suction Dredgers (CSD) ranging from 300mm to 650mm discharge diameter, Auger Suction Dredgers (ASD) for precision environmental dredging, and Water Injection Dredgers (WID) for efficient sediment fluidization. All our dredgers are designed for container shipping and quick assembly on-site.

Our headquarters is in Dubai, UAE. We also have offices in Dordrecht, Netherlands, Dhaka, Bangladesh, and Tangerang, Indonesia to serve our global customer base. Our engineering teams work closely with partners worldwide to deliver tailored dredging solutions.

Dredge Yard was founded in 2008 and has over 15 years of experience in designing, engineering, and supplying dredging equipment. We have successfully partnered with shipyards, contractors, and port authorities across Europe, Middle East, Asia, Africa, and the Americas.

Yes, we specialize in custom-engineered dredging solutions. Our engineering team works closely with clients to understand their specific requirements, site conditions, and operational needs. We can modify our standard designs or develop entirely new solutions to meet your project requirements.

The right dredger size depends on several factors:

• Production requirements - How much material needs to be moved per hour/day
• Dredging depth - Maximum water depth at your site
• Material type - Sand, clay, silt, or mixed materials
• Pumping distance - How far the material needs to be transported
• Site accessibility - Transport and assembly constraints

Use our Dredger Comparison Tool to compare specifications, or contact us for a personalized recommendation.

Cutter Suction Dredgers (CSD) use a rotating cutter head to cut and loosen material before suction. They are ideal for harder materials like compacted sand, clay, and soft rock, and offer higher production rates.

Auger Suction Dredgers (ASD) use a screw-type auger head that gently conveys material to the suction mouth. They create less turbidity and are preferred for environmental dredging, sensitive ecosystems, and precision work where minimal disturbance is required.

Water Injection Dredgers are ideal for maintenance dredging in navigational channels, harbors, and tidal waterways. They work by fluidizing sediments with high-pressure water jets, allowing natural currents to transport the material. Benefits include: no discharge pipeline needed, high efficiency in silt and sand, low fuel consumption, and minimal environmental impact. They are not suitable for hard materials or when material needs to be transported to a specific location.

Production rates vary by model and material type:

Model	Sand (m³/hr)	Clay (m³/hr)
CSD 300	1,200	400
CSD 450	2,800	900
CSD 650	7,000	1,650

Actual production depends on site conditions, pumping distance, and material characteristics. Contact us for a detailed production estimate for your project.

Dredger pricing varies significantly based on size, specifications, and customization requirements. Our range starts from smaller CSD 300 units suitable for canal maintenance and light dredging, up to large CSD 650 units for major capital dredging projects.

For accurate pricing, please request a quote with your project details. We provide detailed quotations including equipment specifications, optional features, spare parts packages, and delivery terms.

We offer flexible payment terms tailored to each project. Typical arrangements include:

• Milestone-based payments during construction
• Letter of Credit (L/C) arrangements
• Bank guarantee options
• Leasing and financing solutions through partner institutions

Payment terms are discussed during the quotation process based on project value and customer requirements.

Yes, we strongly recommend purchasing a recommended spare parts package with your dredger. These packages are tailored to your specific equipment and operational intensity, typically covering 1-2 years of operation. We also maintain stock of common spare parts for quick delivery and offer ongoing spare parts supply throughout the equipment lifecycle.

Absolutely. We supply a full range of dredging components including dredge pumps, cutter heads, valves, ball joints, booster stations, and more. These components are compatible with various dredger brands and can be used for new builds, upgrades, or replacements. Visit our Components page for details.

Lead times vary based on dredger size and specifications:

• Small dredgers (CSD 300-400): 4-6 months
• Medium dredgers (CSD 450-500): 6-9 months
• Large dredgers (CSD 600-650): 9-12 months

Custom designs may require additional engineering time. We provide detailed project schedules during the quotation process.

All our dredgers are designed for container shipping. The equipment is disassembled into modular sections that fit standard shipping containers (20ft and 40ft). This enables cost-effective transport to any port worldwide and simplifies customs clearance. We handle all export documentation and can arrange door-to-door logistics through our shipping partners.

Yes, we offer comprehensive supervision and commissioning services:

• Assembly supervision by our experienced engineers
• System testing and commissioning
• Trial dredging with performance verification

Assembly typically takes 2-4 weeks depending on dredger size and site conditions.

Basic requirements include:

• Waterfront access for launching
• Level area for assembly (approximately 30m x 50m for larger units)
• Crane access (50-100 ton capacity depending on dredger size)
• Power supply for welding and tools
• Secure storage for components

We provide detailed site requirement specifications during project planning.

We provide a standard 12-month warranty on all new dredgers and components, covering defects in materials and workmanship. Extended warranty options are available. The warranty includes remote technical support, and we can dispatch service engineers if on-site support is required (travel costs may apply).

We offer multiple support channels:

• 24/7 emergency hotline for critical issues
• Email and phone support during business hours
• Remote diagnostics via video call
• On-site service engineer visits
• Comprehensive operation and maintenance manuals

Most technical questions can be resolved within 24-48 hours.

Delivery times depend on the part and destination:

• Stock items: 3-5 business days (air freight) to most locations
• Non-stock items: 2-4 weeks manufacturing time plus shipping
• Emergency orders: Express air freight available for critical parts

We recommend maintaining a spare parts inventory for critical components to minimize downtime.

Our CSDs are designed for versatile material handling:

• Sand and gravel: Optimal performance
• Silt and mud: High production rates
• Clay: Effective with appropriate cutter head
• Soft rock: Possible with heavy-duty cutter heads

We offer different cutter head configurations optimized for specific soil conditions. Hard rock dredging may require specialized equipment.

Maximum pumping distance depends on the dredger model and pipeline configuration:

• CSD 300-400: Up to 1,000-1,500m
• CSD 450-500: Up to 2,000-2,500m
• CSD 600-650: Up to 3,000-4,000m

For longer distances, booster stations can be added to the pipeline. Each booster can extend the range by 1,500-2,500m depending on conditions.

Fuel consumption varies with dredger size and operating conditions. Typical consumption at full load:

• CSD 300: ~40-50 liters/hour
• CSD 450: ~100-120 liters/hour
• CSD 650: ~200-250 liters/hour

Actual consumption depends on material hardness, pumping distance, and dredging depth. Our engineers can provide detailed fuel consumption estimates for your specific project.

We offer flexible power configurations:

• Diesel engines: Most common, suitable for remote locations
• Electric drive: Connected to shore power, lower operating costs
• Hybrid systems: Combination of diesel and electric

Engine brands include Caterpillar, Cummins, Volvo Penta, and others based on customer preference and local service availability.