Bow Discharge Installation – The global standard in dredging
At Straatman, we invented the bow coupling system, also known as the bow discharge installation. Since its invention, it has become the worldwide standard for dredging operations. Today, all major dredging companies use our bow coupling technology, proving its unmatched reliability and efficiency.
Our bow discharge installation allows a quick and secure connection between the dredger and the floating pipeline. This system ensures smooth and efficient material transport for land reclamation, beach nourishment, and large-scale dredging projects.
Why is our bow coupling the best?
✅Proven technology – We developed the original bow coupling and remained the industry leader worldwide.
✅Trusted by the best – All major hopper dredgers and dredging companies rely on our system.
✅Built for tough conditions – Designed for harsh weather and extreme working environments.
✅Fast & safe – Quick connection, minimal maintenance, and maximum operational efficiency.
✅Custom solutions – Our system can be adapted to various dredging needs.
How the Bow Discharge Installation works
The bow discharge installation is the connection point between the dredger and the floating pipeline. It consists of:
- Guide ring & gantry construction – Integrated into the bow of the dredger.
- Bow coupling – A female part attached to the ship and a male part with a floater, connecting to the pipeline.
- Hydraulic system – Operates the locking mechanism, ensuring a secure and leak-free connection.
- High-durability materials – Designed for long-term performance in demanding conditions.
Technical specifications
- Pipe diameters: Ø 350 – Ø 1,100 mm
- Male part swivel angle: 15°
- Male part rotation: > 360°
- Operating pressure: 10 – 30 Bar
Bow Discharge Installation – customization & options
Our bow discharge installation can be customized with several options to fit specific dredging needs:
✅ Integrated Service Frame – Stainless steel frame for easy inspection & maintenance.
✅ Rainbow Unit – Fixed or insert-type nozzle for material discharge over water.
✅ Flange Connections – Ensuring easy integration with different pipeline setups.
✅ Wear-Resistant Liners – Protection for longer system lifespan.
✅ Chain Guides & Safety Features – Additional stability and secure operation.
✅ Hoisting System – Special lifting mechanisms for handling the bow coupling.
✅ Custom Foundations – Designed for split hopper dredgers and specialized dredging vessels.
Video: connecting the floating pipe line
This movie shows the principle function of making the connection between the male part with floater and the female part of the bow coupling. By using a deck winch and a custom made bridle, the male part is lifted up to the female part. After a clean fit the male part is locked by retaining rings, operated by hydraulic cylinders.
Decades of experience in dredging technology
With over 30 years of experience, we continue to innovate and improve our dredging solutions. One of our special projects was the bow coupling installation for the "Reimerswaal" hopper dredger. We developed a unique adjustable hoisting system, allowing more space for conveyor belt operations.
We work closely with the world's top dredging companies to provide custom solutions that improve efficiency and performance. Whether for trailing suction hopper dredgers (TSHDs) or other specialized dredgers, our technology ensures the highest level of performance and reliability.
The industry standard for dredgers
Since we invented the bow coupling, it has set the benchmark for modern dredging technology. All major dredging companies worldwide continue to use our bow discharge installation, proving that our system remains the best choice for efficiency, durability, and reliability.
Want to learn more about our bow coupling solutions? Contact us today to discuss how we can enhance your dredging operations with our proven technology!
Recent Straatman dredging equipment projects:
What to expect from our Straatman team
High Quality Products
Our products are designed and manufactured with attention to detail. We use the best materials and check everything to make sure you get the best.
Excellent Service Level
We’re here to help you. Our team is always ready to answer your questions and make sure you’re happy with our service.
Continuous Innovation
We always try to be better. We keep learning, improving and investing in research and development so we can give you the newest and best solutions.
Certified on Every Necessary Level
We meet all the important standards. This means our products are safe, reliable, and trustworthy.
Dedicated and Enthusiastic Team
Our team loves what they do. They work hard to meet your needs and make you happy.
We Do What We Promise
We keep our promises. You can trust us to do what we say we will.
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