The 4200m3, Split-hull type Hopper Trailing suction dredger, is the only unit available for sale(second hand TSHD), this vessel is highly equipped with MAN engines, HK Pumps, and all other high-grade equipements both for Dredging system, navigation system and split system.
She has the following advantages and features
1. Fast Mud Discharge
A split-hull Trailing Suction Hopper Dredger opens its hull via a hinged mechanism in the center, allowing the dredged material in the hopper to rapidly discharge under gravity. This process typically takes only a few minutes. In contrast, bottom-door hopper dredgers rely on opening multiple bottom doors. This method is significantly affected by water currents and the fluidity of the slurry, resulting in slower discharge speeds—especially noticeable with cohesive soils or high-concentration slurries.
2. Suitable for High-Viscosity or Coarse-Grained Sediments
Split-hull discharge is almost unrestricted by the physical properties of the sediment. It can efficiently unload difficult-to-flow materials such as clay and gravel. Conversely, bottom doors are prone to clogging or incomplete discharge when handling cohesive soils or large particles, often requiring additional flushing or manual cleaning.
3. More Thorough Discharge
The split-hull design achieves an emptiness rate of nearly 100%, reducing residue and improving effective loading efficiency. Due to structural limitations, bottom-door dredgers often leave residual sediment in the bilge, which affects subsequent loading capacity and operational efficiency.
4. Suitable for Precise Dumping in Environmentally Sensitive Areas
Split-hull vessels can quickly and centrally dump dredged materials at designated locations, facilitating control over the dumping range and reducing diffusion pollution. Bottom-door discharge takes longer, causing the sediment to disperse along a wider settling path in the water, which is unfavorable for precise placement.
5. Relatively Simpler Maintenance (in certain aspects)
Although the split-hull mechanism is mechanically complex, it eliminates the need for numerous bottom hydraulic doors and sealing systems. This reduces the risk of door leaks, corrosion, and jamming. Bottom doors, however, are numerous and have high sealing requirements. They are prone to corrosion and aging in seawater environments, leading to higher maintenance costs.
Applications:
Coastal port dredging, waterway deepening and maintenance
Land Reclamation, beach nourishment and harbor expansion
Silt, clay, sand, gravel and cobble excavation
Coastal dredging support and offshore engineering projects
"Split Hull Trailing Suction Hopper Dredgers (TSHDs) and Bottom Door TSHDs are two common discharge methods for suction dredgers. The former is relatively rare in China, and available second-hand Vessels For Sale is only this unit.
This specific vessel is particularly notable for its exceptionally high specifications, rivaling European TSHDs from IHC, and is capable of unrestricted navigation deployment."
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