Coastal marina maintenance, river estuary silt removal, and port auxiliary dredging are regular construction tasks across Spain’s Mediterranean coastline. Sediment and sand continuously accumulate in marinas and inland waterways. Traditional dredging solutions often come with high rental costs for large dredger vessels, poor accessibility in narrow berths, and limitations on long‑distance slurry transport.
This authentic Spanish customer story shares the full real‑site experience of a local contractor switching from bucket‑based digging to YG300‑30 excavator-mounted dredge pumps. Want more case studies? Contact YG for more details.
Want More Case Studies? Contact YG For More Details
YG Excavator Dredge Pump Parameter
| Serial No. | Model | Flow m3/h | Lift(m) | Matching Agitator | Stirrer Torque | Excavator Tonnage |
| 1 | YG200-15 | 200 | 15 | 5.5KW | 1556 | 10T-20T |
| 2 | YG150-30 | 150 | 30 | |||
| 3 | YG300-20 | 300 | 20 | |||
| 4 | YG400-10 | 400 | 10 | 7.5KW | 1946 | 20T-30T |
| 5 | YG500-15 | 500 | 15 | |||
| 6 | YG250-35 | 250 | 35 | |||
| 7 | YG300-30 | 300 | 30 | 15KW | 2433 | 30T-40T |
| 8 | YG400-30 | 400 | 30 | |||
| 9 | YG400-40 | 400 | 40 |
Want More Case Studies? Contact YG For More Details
Customer Background: Coastal Dredging Contractor From Alicante, Spain
This customer is a well‑established marine and civil contractor located in Alicante on Spain’s southeastern coast. The company owns multiple heavy‑duty excavators, including a 36‑ton model. Their main business covers marina berth silt clearing, coastal river‑estuary dredging, small‑port maintenance, and beach nourishment‑related sediment‑handling assignments.
Seasonal coastal currents carry large volumes of sand and silt into local marinas. If sediment is not removed regularly, water depth reduces and affects boat navigation. Renting large dredger vessels for medium‑size marina projects brings very high hourly charges, and big ships cannot enter some narrow inner berth zones. The old working method using only excavator buckets created low net sediment removal efficiency.
After evaluating multiple equipment options, researching excavator dredge pump prices, and checking product specifications from each excavator-mounted dredge pump manufacturer, the contractor finally selected the YG300‑30 excavator dredge attachment.
Core On‑Site Difficulties Before Deploying YG300‑30 Excavator Dredge Attachment
Before installing this professional dredge attachment, the Spanish contracting team met several persistent bottlenecks that hurt project profit and construction schedules:
- Low efficiency with pure excavator bucket digging. When working on loose coastal sand‑silt mixtures, the bucket scoops large volumes of water. A huge portion of sediment flows back to the seabed immediately after lifting, resulting in low effective net removal volume.
- High cost to rent large dredging vessels. Big dredger ships charge expensive rental fees. For medium‑sized marina maintenance jobs, vessel rental takes up most of the project budget.
- Restricted access for large dredgers. Many inner marina berths are narrow. Full‑size dredging vessels physically cannot reach these working zones. Contractors had to reject some small- and medium-sized dredging bids.
- Limited slurry transportation capability. Bucket digging can only dump sediment on nearby shorelines. For projects requiring long‑distance or high‑elevation slurry delivery, bucket operation cannot satisfy transport requirements.
Custom‑Matched Dredging Solution for Spanish Coastal Marina Projects
Considering the customer’s existing 36‑ton excavator, coastal silt‑sand working medium, requirement for 30‑meter discharge lift, and marina narrow‑berth operating environment, we recommended YG300‑30 as their main excavator dredge attachment.
This unit belongs to heavy‑duty excavator-mounted dredge pumps. It delivers a rated 300 m³/h flow and 30 m lift, equipped with a powerful 15 KW agitator and 2433 agitator torque, specially built for 30‑40‑ton host excavators. The built‑in high‑power hydraulic agitator breaks compacted coastal sand and silt, mixing solid material and water into transportable slurry. The pump connects directly to the excavator boom; it draws full hydraulic power from the host machine and does not need separate external power sources.
We delivered complete quick‑connect kits, floating discharge hoses, and core wearing‑part packages. English operation manuals and remote video training covered agitator working logic, proper submergence depth control, pipeline layout rules, and blockage troubleshooting guidance. We also provided full transparent breakdown of excavator dredge pump price, clearly listing main attachment, accessories, and export‑packaging costs without hidden extra fees.
Want More Case Studies? Contact YG For More Details
Before‑and‑After Site‑Record Data Comparison
| Evaluation Item | Original Pure Bucket Dredging | YG300‑30 excavator dredge attachment |
|---|---|---|
| Effective hourly net sediment removal | Low, large‑volume sediment back‑flow | 300 m³/h (official rated flow) |
| Max practical discharge lift | Only bank‑side dumping | 30 meters, meets long‑distance coastal transport demands |
| Access to narrow marina inner berths | Poor, bucket work wastes plenty of time | Excellent, flexible with excavator mobility |
| Large dredger vessel rental requirement | Frequently required for medium projects | Eliminated for most marina‑maintenance contracts |
| Secondary sediment‑handling workload | Heavy, extra labour for shore‑side material re‑handling | Slurry pumped directly to target disposal zone |
| Risk of silt flowing back into berth | Very high | Greatly reduced via continuous slurry pumping |
Authentic Customer Feedback From Spanish Coastal Dredging Contractor
“We spent a long time studying excavator dredge pump prices and evaluating different excavator-mounted dredge pump manufacturers. Our previous bucket‑only dredging work was extremely inefficient for marina silt removal, and renting big dredger ships cost us too much money. This YG300‑30 excavator dredge attachment fits our 36‑ton excavator perfectly. Its powerful 15 KW agitator with 2433 torque handles compacted coastal sand‑silt really well. The 300 m³/h flow and 30 m lift satisfy most of our marina and estuary slurry‑transport tasks. We can now carry out dredging jobs in narrow inner berths that large vessels cannot reach. The project cycle gets much shorter. Whenever we meet operational puzzles, remote technical support responds fast. This dredge pump attachment has become our core equipment for Spanish coastal maintenance projects.”
Want More Case Studies? Contact YG For More Details
5 Practical Buying & On‑Site Operation Advice for Dredging Contractors
Based on their real‑world purchasing and Spanish coastal‑site experience, the project manager shared valuable tips for global buyers:
- Never make purchase decisions purely based on excavator dredge pump price. Always verify core technical indicators: matching excavator tonnage, flow rate, discharge lift, agitator power, and torque. Even a well‑built excavator dredge attachment will deliver poor performance if parameters mismatch your host machine and site conditions.
- For coastal marina projects with long‑distance slurry transportation, pay extra attention to rated lift index.
- Master proper submerged‑depth control and reasonable moving speed. Too‑fast movement will trigger frequent pipeline blockages.
- Optimize discharge‑hose layout, minimize sharp bends to avoid pressure loss, and ensure the pump can achieve its designed lift output.
- Inspect agitator, impeller, and wearing parts on a regular schedule. Stock critical spare‑parts locally to prevent project shutdown waiting for cross‑border shipments.
Have A Similar Project? Contact YG For Customized Services
This real‑life Spanish coastal marina‑dredging case fully proves that properly‑selected excavator-mounted dredge pumps can solve low‑efficiency bucket‑digging and high‑vessel‑rental‑cost pain points for coastal maintenance work. Whether you take marina dredging, river‑estuary silt removal, or auxiliary port‑maintenance assignments, a reliable excavator dredge attachment will greatly lift your site competitiveness.
If you are sourcing dredging attachments, want transparent excavator dredge pump prices, and searching for a trustworthy excavator-mounted dredge pump manufacturer, please reach out to the YG team. We will recommend the most‑suitable model according to your excavator tonnage, required flow‑lift parameters, and local sediment conditions, and provide a formal quotation plus full coastal‑site operation‑maintenance guidance for your dredging projects.