TSHD Scope of Application | Projects, Sea Conditions & Soil Types

2026-03-07 14:06:41     Category：Technical Resources     Browse number：107     Release time：2026-03-07 14:06:41

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TSHD: Scope of Application: Projects, Sea Conditions & Soil Types

This article provides a detailed, tabular overview of the project types, sea conditions, and soil characteristics suitable for TSHDs.



TSHD: Scope of Application – Projects, Sea Conditions & Soil Types

1. Applicable Projects  

• Capital and maintenance dredging of navigation channels, fairways and harbour basins

• Reclamation works (land reclamation, beach nourishment, port land formation)

• Dredging and disposal of sediment in waterways, estuaries and coastal areas

• Dredging for port construction, terminal expansion and water area regulation

• Coastal protection, silt removal and underwater foundation preparation

• Long-distance offshore discharge and pipeline discharge works

2. Applicable Sea Conditions  

• Sea state: Normally up to Sea State 3–4 (wave height ≤ 1.5–2.0 m)

• Wind scale: Generally within Beaufort 6

• Water depth: From shallow water (about 4–6 m) up to the maximum dredging depth of the vessel

• Tidal range: Adaptable to medium and large tidal areas

• Operating environment: Coastal waters, estuaries, bays, semi‑open sea areas

3. Applicable Soil Types  

• Soft soil: Silt, clay, muddy sand

• Loose to medium dense sand: Fine sand, medium sand, coarse sand

• Silty sand, sandy silt and mixed cohesive‑noncohesive soils

• Loose gravelly soils (without large boulders)

• Soft to medium stiff cohesive soils