TECHNICAL SPECIFICATION: 9000m³ Trailing Suction Hopper Dredger (TSHD)

1. GENERAL PARTICULARS

Vessel Type: Trailing Suction Hopper Dredger (TSHD) with Bow Loading/Discharging Capability

Classification Society: ZC

Year Built: 2007 (Delivered: August 2008)

Flag: China (PRC)

2. PRINCIPAL DIMENSIONS

Length Overall (LOA): 123.30 m

Length Between Perpendiculars (LBP): 116.00 m

Moulded Breadth: 23.00 m

Moulded Depth: 10.00 m

Design Draft: 7.85 m

Maximum Dredging/Loading Draft: 8.10 m

Air Draft (Max): 28.50 m (Above waterline)

Deadweight (DWT): 13,926 Tonnes

Gross Tonnage (GT): 10,682

Net Tonnage (NT): 5,854

Displacement (Max): 19,026 Tonnes

Crew Capacity: 34 Persons

Endurance: 4,000 Nautical Miles

Service Speed: 12.6 Knots (Loaded)

3. HOPPER CAPACITY

Total Hopper Volume: 9,112 m³

Maximum Payload: ~13,926 Tonnes (Based on DWT)

Loading Rate: Approx. 2,700 m³/h (Depending on soil conditions)

4. MAIN PROPULSION & POWER GENERATION

Main Engines

Type: 2 × Marine Diesel Engines (Model: G16V6300ZC20B/21B)

Rated Power: 4,412 kW (6,000 HP) each @ 600 rpm

Configuration: 4-Stroke, V-Type, Turbocharged, Intercooled

Starting Mode: Compressed Air (1.2–3.0 MPa)

Cooling: Closed Fresh Water Cooling

Rotation: One Left-Hand, One Right-Hand

Propulsion System

Propellers: 2 × Fixed Pitch Propellers (FPP)

Gearboxes: 2 × Reduction Gearboxes (Ratio 2.51:1)

Couplings: High Elasticity Couplings

Generator Sets

Main Generators: 3 × Diesel Generator Sets

Engine Model: 6300ZLD (4-Stroke, Vertical)

Generator Output: 500 kW each @ 400V, 50Hz

Prime Mover Power: 551 kW

Emergency Generator: 1 × Diesel Generator Set

Output: 50 kW (DC24V Start)

Engine Model: 6135CaF

5. Dredging Equipment

Dredge Pumps (Main Mud Pumps)

Quantity: 2 Units

Type: Centrifugal Dredge Pumps (Directly driven by Diesel Engines)

Drive Engine: 2 × A12V190ZLC Diesel Engines

Engine Power: 1,200 kW (Continuous)

Speed: 1,500 rpm

Pump Performance:

Flow Rate: 10,000 m³/h

Head: 23 m

Efficiency: High efficiency for sand/clay mixture

Suction Pipe:

Diameter: 1,000 mm

Length: Adjustable based on draft

Dredging Depth: Max 30 meters

Jet Water Pumps (High Pressure)

Quantity: 2 Units

Type: Centrifugal Pumps (Model: SDS400-620AI)

Drive: Electric Motor (960 kW)

Performance:

Flow Rate: 3,010 m³/h

Head: 103 m (10.3 Bar)

Purpose: Fluidizing soil in the hopper and assisting suction.

Bow Loading/Discharging System

Booster Pumps (Relay Pumps): 2 Units

Capacity: 7,000 m³/h each

Drive: Electric Motor (875 kW)

Function: Enables long-distance discharge via Floating Pipelines or direct bow loading.

Discharge Pipe Diameter: 1,000 mm (Standard), adaptable for shore connection.

6. AUXILIARY SYSTEMS & PUMPS

Sea Water Service Pumps: 2 × CIS150-125-315A (178 m³/h, 22kW)

Bilge Pumps: 2 × 100CBZ-65 (100 m³/h)

Fire Fighting Pump: 1 × 80CBZ-70 (60 m³/h, 0.7 MPa)

Fuel Oil Transfer Pumps: Multiple units (KCB series) for HFO/DO transfer.

Sludge/Oily Water Separator:

Oily Water Separator: 1 Unit (5 m³/h, 15ppm compliance)

Sewage Treatment Plant: 1 Unit (Capacity for 36 persons)

Fresh Water Generator: Distillation type for crew consumption.

Air Compressors:

Main Air: 2 × LSHC-50A (45 m³/min, 3.0 MPa) for engine start/system air.

Service Air: For general utility.

Hydraulic Power Pack: For valve operation and deck machinery.

7. DECK MACHINERY

Anchor Windlass: 2 × Electro-Hydraulic Anchor Windlasses

Chain Diameter: Φ52mm (or as per class)

Pull Force: High tension for offshore holding.

Mooring Winches: Electro-hydraulic mooring winches fore and aft.

Crane: Deck crane for maintenance and pipe handling (Capacity typically 5-10 Tonnes).

Drag Head: 2 × Standard Drag Heads with wear plates and jets.

Overflow System: Top and bottom overflow gates for precise load control.

8. NAVIGATION & COMMUNICATION

Navigation System: Dual GPS/DGPS, Gyro Compass, Magnetic Compass, Radar (X/S Band), Echo Sounder, AIS, VDR.

Dredging Instrumentation: Advanced Dredging Control System (DCS) monitoring pump vacuum, density, hopper load, and position.

Communication: GMDSS Area A3/A4 compliant, VHF/UHF/HF Radio, Satellite Communication (Inmarsat/Fleet Broadband).

Internal Comms: PA System, Engine Room Telegraph, Sound Powered Phones.

9. ACCOMMODATION

Cabins: Single and double cabins for officers and crew.

Mess Room: Large dining hall with galley.

Recreation: Lounge, gym, and internet access.

HVAC: Centralized Air Conditioning and Heating system for all accommodation and control rooms.

10. REMARKS

The vessel is equipped with a robust Bow Discharge system (via booster pumps), allowing it to function not only as a trailing suction hopper dredger but also as a Reclamation vessel capable of pumping slurry directly to shore or into Barges.

All main engines and critical equipment are supplied by top-tier Chinese manufacturers (e.g., CSSC, Weichai, etc.) with CCS certification.

The vessel is ready for immediate deployment in coastal and offshore Dredging Projects.

Application :

Designed for capital & maintenance dredging, port & harbor deepening, offshore land reclamation, and sand extraction.

Advantages :

9112m³ large hopper – High efficiency, large-scale output.

Self-propelled & endurance – Long-distance open-sea operation.

Powerful propulsion & dredging system – Stable & high-productivity construction.

All-weather capability – Suitable for harsh sea conditions.

See below General Arrangement :

Construction Project Cases

• 2009–2010: 12.5m Deepwater Channel Widening & Dredging project, Yangtze River Estuary, Shanghai

• Feb–Jun 2011: 400,000-ton Channel Dredging Project, Dongjiakou Port, Shandong

• 2011–2012: Channel Maintenance Dredging Project, Yangtze River Estuary, Shanghai

• May–Jun 2013: Channel Dredging Project, Longkou Port, Shandong

• May–Jul 2013: Channel Dredging Project, Dongxing Port, Shandong

• Nov 2013–Apr 2014: Channel Dredging Project, Qidong Port, Jiangsu

• 2013: Channel Maintenance Dredging Project, Yangtze River Estuary, Shanghai

• 2013: Airport Enclosure & Reclamation Project, Pudong, Shanghai

• 2014: Channel Maintenance Dredging Project, Yangtze River Estuary, Shanghai

• Mar–Jul 2015: 300,000-ton Channel Dredging Project, Zhanjiang Port, Guangdong

• Oct–Dec 2015: Channel Dredging & Expansion Project, Tieshan Port, Guangxi

• Dec 2015–Jan 2016: Channel Dredging Project, Qinzhou Port, Guangxi

• Jan–Apr 2016: 300,000-ton Channel Dredging Project, Dayawan Bay, Huizhou, Guangdong

• Jun–Jul 2016: Channel Dredging Project, Weifang Port, Shandong

• 2016: Channel Maintenance Dredging Project, Yangtze River Estuary, Shanghai

• Jul–Oct 2016: Port Expansion Project, Yangshan Port, Shanghai

• Oct 2016–Jan 2017: 300,000-ton Channel Dredging Project, Dayawan Bay, Huizhou, Guangdong

• Nov 2016–Jan 2017: Channel Dredging Project, Chiwan Port, Shenzhen, Guangdong

• 2017: Channel Maintenance Dredging Project, Yangtze River Estuary, Shanghai

• Feb–Mar 2017: Channel Dredging Project, Zhoushan Archipelago, Zhejiang

• Mar–Jun 2018: Wharf Dredging Project, Lufeng Jiatun Bay, Guangdong

• Jul–Sep 2019: Channel Maintenance Dredging Project, SCT Terminal & Tonggu Channel, Shenzhen, Guangdong

• Sep 2021: 100,000-ton Channel Dredging Project, Sigang Four Districts, Nantong, Jiangsu

• 2023: Channel Maintenance Dredging Project, Yangtze River Estuary, Shanghai

• Feb 2025: Channel Maintenance & Reclamation Project, Western Channel, Shenzhen, Guangdong