Three sister vessels available for Sale 

Power: Equipped with two 7,200 kW diesel engines, utilizing fully electric propulsion (both onboard mud pump and submersible pump are electrically driven).

As a large-scale, fully electric-driven Trailing Suction Hopper Dredger, this vessel draws on the design philosophy of the Changjing 7 . The fully electric drive system facilitates load matching to cope with complex operating conditions. The application of electric drive technology enhances control precision and energy efficiency management. With a hopper capacity of 26,800 cubic meters, it ranks among the ultra-large trailing suction hopper dredgers, achieving world-class overall performance.

Main Particulars

Length over allapprox. 171.20 m

Length between perpendiculars : 160.00 m

Breadth, moulded : 36.00 m

Depth, moulded : 15.80 m

Draft at International Freeboard : 9.50 m

Max. Hopper Capacity approx. 26800 m³

Suction Pipe Diameter : Φ1200 mm

Dredging Depth : 40/70/115 m

Speed at draft 11.5 m～15.5 kn

Total installed power : 27726 kW

Main diesel engines : Wartsila 3*8000 kW

Auxiliary/harbor generator : Wartsila 2*1600 kW

Emergency generator : Cummins 1* 526 kW

Main thruster : Wartsila 2*10500 kW

Inboard Dredge Pump : HK 2*6000 kW

Under water pump : HK+BKKER 2*3300 kW

Jet water Pumps : CCCC 2*2000 kW

Bow thrusters : ZF 2*1100 kW

Stern thruster : ZF 1*1100 kW

Class:

CCS, CSA Trailing suction dredger, Dredging within R1, DP-1

AUT-0: G-P01L1,S,C,RC,NEC2,INC,RSC1,AFS); G-ECO(BWM(T))

Function:

taking deep sea sand, coastal ports and deep water channel dredging, land Reclamation and coastal maintenance

Navigation:

unrestricted and dredging in coastal area.

Dredged Soil Texture

Dredging mud, clay, fine silt sand, medium fine sand, coarse sand, gravel and pebble;

Clay:

Ip>17

Fine silt sand: d50%=0.01mm, density (volume-weight) = 1.86 t/m³

Medium fine sand:

d50%=0.31mm, d50%=0.23mm, wP%=0–10%

density (volume-weight) = 1.95 t/m³ (the sand pores are filled with water)

Coarse sand:

d50%=0.50mm

Gravel and pebble: d50%=20mm

Loading

1. The dredged soil texture is medium fine sand: the calculated effective loading time is about 90 minutes when the two drag heads dredge down to 20m. This loading time is calculated on the basis that both the two onboard dredge pumps are put into use, the average density of the soil into the hopper is 1,300kg/m³, and the average overflow ratio is 8%.

2. The dredged soil texture is medium fine sand: the calculated effective loading time is about 70 minutes when the two drag heads dredge down to 40m. This loading time is calculated on the basis that both the two onboard Water Pumps are put into use, the average density of the soil into the hopper is 1,320kg/m³, and the average overflow ratio is 8%.

3. The dredged soil texture is medium fine sand: the calculated effective loading time is about 90 minutes when the two drag heads dredge down to 70m. This loading time is calculated on the basis that both the two under water pumps are put into use, the average density of the soil into the hopper is 1,270kg/m³, and the average overflow ratio is 8%.

4. The dredged soil texture is medium fine sand: the calculated effective loading time is about 140 minutes when the single drag head dredge down to 115m. This loading time is calculated on the basis that single dredge head, the starboard under water pumps are put into use, the average density of the soil into the hopper is 1,270kg/m³, and the average overflow ratio is 8%.

Pumping ashore

When discharging above described mixture through a pipeline of 4000 m length (not including discharge line on board) by both onboard pumps working in series, the unloading time for 26000 m³ of sand is calculated at approx. 147 minutes.

This time is based on a Discharge Pipeline diameter of 1000 mm, a geodetic height of 6 m, and the ashore density is 1350 kg/m³.

In this case the power for the onboard dredge pumps can reach to 5800 kW each.

When both onboard pumps working in series, the ashore distance can reach to 5000m.

Applications of the Ultra-Large Trailing Suction Hopper Dredger

• Deep-Water Channel Construction: Ideal for dredging and maintaining deep-water ports and shipping lanes (up to 115m depth) to accommodate ultra-large vessels.

• Land Reclamation: Efficiently transports massive volumes of sand (26,800 m³ capacity) for large-scale coastal expansion and infrastructure projects.

• Deep-Sea Sand Mining: Capable of extracting construction-grade sand and aggregates from deep-sea environments with high precision.

• Long-Distance Pumping: Features powerful series-connected pumps capable of discharging material over distances up to 5,000 meters, reducing the need for relocation.

• Complex Soil Handling: Designed to excavate a wide range of materials, from soft mud and clay to coarse gravel and pebbles.

  
  
  
  FAQ: 26,800 m³ Trailing Suction Hopper Dredger (China's Largest Available TSHD)

Q1: With a hopper capacity of 26,800 m³, how does this vessel's scale compare globally, and what efficiency advantages does it offer for large-scale reclamation projects?

A: This vessel represents the pinnacle of Chinese dredging manufacturing, standing as China's largest available TSHD for sale.  

Massive Scale: Its 26,800 m³ cargo capacity is equivalent to filling 9 standard international swimming pools in a single load. With a Length Overall of 180m and a Beam of 36m, it offers a displacement and stability profile equal to top European counterparts.

Operational Efficiency: The massive volume significantly reduces the number of cycle trips required for long-distance transport of sand, silt, or gravel. Combined with fast loading and self-discharging systems, it maximizes production rates for large-scale land reclamation and port expansion projects, where moving millions of cubic meters efficiently is critical.

Versatility: Despite its size, it handles various soil types (sand, silt, gravel, clay) effectively, making it a versatile asset for diverse global projects.

Q2: How does the "All-Electric Propulsion" and dual-pump system enable operations at extreme depths of up to 115 meters?

A: This vessel utilizes world-leading technology featuring an advanced all-electric propulsion and drive system, ensuring precise control and massive power delivery for deep-water dredging.

Deep-Water Capability: Engineered for extreme conditions, it achieves a maximum dredging depth of 115 meters, making it ideal for deep-water channel maintenance and offshore mining where conventional dredgers cannot reach.

High-Power Dual Pump System: It is equipped with two electric-driven inboard pumps and two electric-driven underwater pumps. This redundancy and power distribution allow for high suction lift and efficient slurry transport even from great depths.

Propulsion & Maneuverability: Powered by two 7,200 kW diesel engines driving Controllable Pitch Propellers (CPP), along with three bow/stern thrusters, the all-electric architecture provides superior fuel efficiency, reduced vibration, and exceptional maneuverability in harsh open sea conditions.

Q3: What makes this TSHD suitable for global deployment in harsh offshore environments, and how does it compare to European competitors?

A: Designed as a heavy-duty vessel for global mobility, this TSHD combines robust structural integrity with state-of-the-art automation.

Global Parity: Its overall performance is rated equal to top European counterparts, offering world-class reliability without the premium price tag often associated with Western-built vessels. There are three sister vessels available, indicating a proven, standardized design.

Harsh Sea Stability: With a wide 36m beam and advanced dynamic positioning capabilities (via electric thrusters), it maintains stable performance in harsh open sea conditions, ensuring high uptime for critical infrastructure projects worldwide.

Extended Reach: Beyond deep dredging, it supports shore discharge up to 5,000 meters, providing flexibility for projects that require both offshore hopping and direct pipeline discharge to land. This dual capability makes it a strategic asset for port expansion and coastal protection globally.