Dredge Components
Bow Couplings
Secure bow discharge connections designed for quick connection and disconnection during rainbow or shore discharge operations on hopper dredgers.
What is a Bow Coupling?
A bow coupling is a specialized connection system used on hopper dredgers to enable quick and secure attachment of discharge pipelines at the bow of the vessel. These couplings allow for rapid connection and disconnection during shore discharge or rainbow discharge operations.
The bow coupling must withstand high pressures during pumping while providing a leak-free seal. It also needs to accommodate vessel movement and pipeline loads without disconnecting accidentally. Fail-safe locking mechanisms ensure the coupling remains secure during operation.
Our bow couplings are designed for the demanding marine environment with corrosion-resistant materials and robust construction that ensures reliable operation throughout the vessel's service life.
How Do Bow Couplings Work?
Bow couplings typically consist of a male and female coupling half. The fixed half is mounted on the vessel's bow, while the floating half connects to the shore or floating pipeline. Locking mechanisms secure the two halves together.
Hydraulic or mechanical actuators engage the locking system, providing a secure connection that can withstand pipeline pressures and external forces. Position sensors confirm proper engagement before pumping begins.
Bow Coupling Size Range
We offer bow couplings sized to match hopper dredger discharge pipe requirements.
| Nominal Size | Max Pressure | Locking Type | Typical Application | Action |
|---|---|---|---|---|
| 500 mm (20") | 25 bar | Hydraulic | Small-medium TSHD | Quote |
| 600 mm (24") | 25 bar | Hydraulic | Medium TSHD | Quote |
| 700 mm (28") | 25 bar | Hydraulic | Medium-large TSHD | Quote |
| 800 mm (32") | 25 bar | Hydraulic | Large TSHD | Quote |
| 900-1200 mm | 25 bar | Hydraulic | Large/Mega TSHD | Quote |
Need a custom size or special configuration?
Discuss Custom RequirementsTechnical Specifications
Our bow couplings are built with premium materials for reliable performance in demanding marine environments.
Construction
Materials
Performance
Features
Applications
Bow couplings are essential components for hopper dredger discharge operations.
Shore Discharge
Connection to shore pipelines for land reclamation projects
Rainbow Discharge
Connection point for rainbow discharge nozzle systems
Floating Pipeline
Connection between vessel and floating discharge line
Why Choose Dredge Yard Bow Couplings?
Fail-Safe Design
Multiple safety interlocks ensure the coupling cannot disconnect under pressure or during operation.
Quick Operation
Hydraulic actuation enables connection in under 60 seconds, minimizing vessel downtime.
Marine Grade Construction
Corrosion-resistant materials and coatings ensure long service life in saltwater environments.
System Integration
Position sensors and controls integrate with vessel automation systems for safe operation.
Quick Facts
Ready to Discuss Your Bow Coupling Requirements?
Our team is ready to help you select the right bow coupling for your hopper dredger. Get in touch for a customized quote.
