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This comprehensive work examines the vital role of dredging equipment in national economic and defense development, highlighting seven decades of remarkable progress in China's shipbuilding industry. Through detailed analysis of technological evolution, the book showcases how Chinese workers and technical personnel demonstrated exceptional self-reliance while advancing from basic dredging equipment to sophisticated world-class machines. The narrative particularly emphasizes the industry's journey of overcoming technical challenges, documenting the transformation that has positioned China as a global leader in dredging technology. As a reference work, it offers invaluable insights and practical knowledge specifically tailored for workers, cadres, and technical personnel in related fields.