The Zawr project is a comprehensive port development project with a huge volume of works，involving various types of works such as quay wall，channel dredging，breakwater，shore protection，land formation，and soil improvement. The dredging project is very difficult due to the hard surface soil of the sea. Zawar phase Ⅰ to phase IV construction adopts the equilibrium-weigh small cube quay structure，which reduces the input of large hydraulic construction equipment. The armor block of revetment and breakwater is optimized，which guarantees the quality and safety of the marine structure. The innovative dredging technology adopting no-cofferdam backfilling technology and the 200 m3 hydraulic grab ship enable the continuous construction of large dredgers. The optimization of the general layout in line with the owner’s usage requirements and the blowing range of the cutter-suction dredger improve the convenience of terminal operation while speeding up the project schedule. The design and construction technology optimization results can provide a reference for similar overseas water transportation projects.