Suction-type dredgers have become the most sought-after vessel type in the dredging industry due to their high added value. Based on a review of concepts such as modules, modularity, and modular design processes-as well as the distinctions between modular and zone-based shipbuilding-one study conducted a comprehensive analysis of a parent vessel. The vessel was divided into two main components: a hull platform module and a dredging module, with the latter undergoing further subdivision. The study transformed the parent vessel's dredging equipment into three distinct types of dredging modules: cutter-suction, side-drag, and suction-head modules. Interface technology also constitutes a key focus of the modular design for these dredging modules. Modular design impacts various aspects of the vessel, including general arrangement, structure, hydrodynamic performance, economic efficiency, and overall design concepts. The study highlights the advantages of modular dredgers by comparing them with conventional parent vessels across several metrics: design and construction timelines, maintenance and retrofit cycles, operational availability, and hull platform and structural characteristics.
Cutter-suction dredgers are among the primary vessels used in the dredging industry; the dynamic action of their rotating cutter heads is a major trigger for sediment release and turbidity generation. Numerical evaluations using a one-dimensional physical model indicate that slope failure (underwater slope collapse) is the primary source of sediment release. The cutting ratio is identified as the most influential operational parameter regarding the resulting turbidity currents.
