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The objective of this thesis was to analyse the hydrodynamic behavior of the floating breakwater and to improve the performance of the floating breakwater. A model, the so-called Rectangular Floating Breakwater Design Model (ReFBreak-Model), had to be developed that served as a general design tool to determine the dimensions of the floating breakwater. Influence of foreshore steepness on wave velocity and acceleration at the breakwater interface. This Master’s Thesis is a pilot research project in order to investigate which parameters, other than the wave energy density spectrum, could play a role in breakwater damage on variable foreshore steepness.

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The purpose of this research is to investigate the mooring system of a floating breakwater which moves about a region, causing its mooring cables to transition between slack and taut conditions. The breakwater will be modeled as a point mass and a rigid body, both of which will be subjected to free and forced motions. The analysis will be performed in two dimensions and the snap loading in the mooring system will be monitored.
 

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Coastal structures are used in coastal defense schemes with the objective of preventing shoreline erosion and flooding of the hinterland. Other objectives include sheltering of harbor basins and harbor entrances against waves, stabilization of navigation channels at inlets, and protection of water intakes and outfalls. An overview of the various types of coastal structures and their application is given in Table VI-2-1. Overall planning and development of coastal projects is covered in Part V.

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Many coastal activities require protection from waves, and breakwaters are widely used in order to provide such protection. The oldest and most common breakwaters are bottom founded structures such as rubble-mound breakwaters. These generally provide excellent protection from waves. However, they may become uneconomical for large water depths, and limited water circulation behind such breakwaters may lead to problems associated with sedimentation and increased pollutant concentrations within protected areas.

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The purpose of the Port Works Design Manual (the Manual) is to offer guidance on the design of marine works and structures normally constructed by the Government of the Hong Kong Special Administrative Region. Such works and structures include public piers, ferry piers, dolphins, reclamations, seawalls, breakwaters, pump houses, and beaches and associated marine facilities. The Manual has been written with reference to the local conditions and experience. Therefore, it may also provide a source of useful data and design reference for other marine works and structures constructed by other organizations or parties in Hong Kong.

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The Rapidly Installed Breakwater System (RIBS) is a floating breakwater made of high strength marine fabrics within a V-shaped structure. Its main feature is its hydraulically pressurized fabric beams that extend from the surface of the water toward the bottom. When deployed, the tip of the V spreads and reflects incoming waves away from the interior of the V, providing a sheltered area inside the V and in the lee of the structure. Ships and lighter age are then moored in the lee of the V for offloading. Depending on the specific location where RIBS is set up, the length of the legs of the V will vary, but may range between 700 and 1,000 ft.

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