Several types of breakwaters exist, from which detached breakwaters are the most common type. In general terms, a detached breakwater is a coast-parallel structure located inside or close to the surf-zone. Take care not to confuse these with with man_made= groyne, which are commonly thin structures that are meant to stop loose materials (eg sand) being washed away or moved along the shore or man_made= piers, which are commonly platforms that extend out over water by use of pillars, or by floating primarily used for people to access boats or similar. Detached breakwaters aim to protect a coast or activities along the coastline (e.g. Manuals and guidelines for different types of breakwaters and coastal structures have been issued before this time, e.g. They are commonly large enough to have a flat top and may carry a publicly accessible highway= footway or track. MarCom WG 40: State-of-the-Art of Designing and Constructing Berm Breakwaters (2003) 59.00. The analytical, numerical, and experimental methods used in studying the effectiveness of various types of floating breakwaters in wave attenuation were also reviewed. These may be built using loose large natural boulders, concrete tetrapods, demolition debris or as a solid concrete structure or solid stone structure. Presented herein is a literature review on the research activities and developments of floating breakwaters over the past few decades. Use man_made= breakwater to identify breakwaters - man-made structures designed to protect a harbour or section of shore from the sea and waves, often to protect boats in a harbour from the effects of high waves.
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