This paper introduces the working principle, technical performance and construction technology of dipper dredgers, and focuses on the core hourly Output Calculation formula for dredging operations. It provides the official reference table of bucket filling coefficient fm for different soil categories including sand, clay, gravel and rock, as well as the recommended loosening coefficient (bulk factor) values for silt, clay, sand, gravel and weathered rock. These standard parameters can effectively support accurate productivity estimation, construction scheme design and on-site operation of dipper dredgers in waterway dredging and channel maintenance projects.

China’s export restrictions on large dredgers are a universal national security policy, not a sanction against specific nations. Driven by strategic concerns in the South China Sea, the policy aims to prevent the proliferation of "island-building" capabilities to potential rivals

Looking for the full list of TSHD core dredging equipment? This expert guide covers all core dredging components for Trailing Suction Hopper Dredgers, including the four key components: drag head, dredge pump, high-pressure water jet pump, and heave compensator, as well as other supporting core equipment: drag arm, hopper, A-frame hoist, dredging winch, overflow system, bow discharging system, and the leveling rake for shallow sweeping. We systematically explain each component's structure, working principle and operational key points, providing actionable technical references for your dredging operations.

This article systematically introduces auxiliary vessels and equipment for cutter suction dredgers, with practical selection logic based on real project conditions rather than rigid standards.

A comprehensive list of ASD tugboat deck machinery, including towing, anchoring, mooring, auxiliary and fire-fighting equipment, with detailed specs and layout points for technical reference.

This document provides a complete guide to the daily maintenance, periodic care, and fault analysis of the hydraulic system for cutter suction dredgers. It covers pre-operation checks, running monitoring, oil management, temperature control, and solutions for low pressure, slow movement, noise, overheating, and oil emulsification. Aimed at improving stability and efficiency, it offers clear troubleshooting steps and best practices for dredger operation and maintenance teams.

Comprehensive manual for dredging mud pump, including common faults, troubleshooting methods, on-site maintenance operations, practical repair cases, and safety guidelines. Suitable for engineering and maintenance personnel to quickly solve on-site problems.

This guide elaborates on the mainstream standard MOA formats of international second-hand ship sale and purchase contracts. It also analyzes the core contractual clauses based on English law, clarifying the key points for the smooth progress of second-hand ship

For decades, radioactive density meters have been the standard in dredging slurry monitoring. However, stringent radiation regulations and high safety costs have driven the industry to adopt innovative non-nuclear solutions. This article analyzes the mainstream technical routes, including electrical resistance tomography and ultrasonic resonance. It highlights the industry trend of safe substitution and provides a practical selection guide to help dredging companies achieve efficient, eco-friendly, and cost-effective equipment upgrades.

his document details the core configuration of dredging instruments, classification of monitoring systems, technical performance, vessel grading, positioning methods, and construction technologies of cutter suction dredgers. It emphasizes that the dredging system is a comprehensive engineering system based on flow, concentration and output monitoring, supported by torque, pressure and vacuum monitoring, combined with high-precision BDS/DGPS positioning, and developing towards intelligent optimization and green construction.

This document briefly introduces main dredging instruments (pressure gauge, flow meter, densimeter, loading indicator, drag head depth position indicator) and two types of dredging monitoring systems (basic and extended) of trailing suction hopper dredgers, as well as its construction technology.

Yanyang Marine offers ready second hand IHC CSD and TSHD , immediately delivery .

This is GAC Announcement No. 9 of 2026, effective February 1, 2026, regulating export declaration for dredgers and similar vessels.

Professional processing guide for engineering vessels temporary registration and single voyage international certificate. Includes applicable vessel types, eligibility, validity, legal effect, required documents, full processing procedures, towing requirements, exemptions, compliance highlights and professional assistance from Yanyang Marine.

This document systematically introduces the basic concepts, performance, processes, methods, parameters and quality control of trailing suction hopper dredgers. It covers hopper loading, reclamation, shallow-spot removal, clay bow-discharge and 21 construction methods, providing complete technical guidelines for dredging and reclamation projects.

This document outlines the architecture and ecosystem of offshore wind power systems. It details the five core components—turbines, foundations, substations, cabling, and onshore connections—and all kinds of vessels involving in wind farm projects. The report analyzes the industry supply chain, cost distribution, and the specific opportunities for marine power systems, including propulsion for installation vessels and backup generators.

This paper systematically introduces booster pump stations (relay pump stations) used in dredging and reclamation projects. It covers the definition, core functions, layout requirements, construction specifications, and typical engineering applications of booster pump stations. The paper also extracts key productivity calculation formulas, parameter tables, and combined construction modes. A real-world case of long-distance and high-lift slurry transportation is analyzed to provide a complete technical reference for engineers, project managers, and construction personnel in port, waterway, reservoir dredging, and reclamation projects.

This professional River Channel Dredging Construction Case from Yanyang Marine outlines a complete, compliant solution for river channel excavation projects. It covers full construction workflow: pre-construction survey, silt & general soil excavation, spoil transportation & disposal, leachate treatment, spoil yard management, and post-construction greening. The plan is optimized for environmental compliance, equipped with industry-leading cutter suction dredgers, and tailored for waterway widening, deepening and silt removal projects, ensuring safe, efficient and cost-effective dredging operations.