breakwater

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breakwater,

offshore structure to protect a harbor from wave energy or deflect currents. When it also serves as a pier, it is called a quay; when covered by a roadway it is called a mole. In the United States a breakwater commonly consists of a long mound of stone rubble and of cheaper materials like rubber tires and oil drums. The flow of waves up its slope, and the formation of swirls by its rough surface dissipate wave energy. A pneumatic breakwater consists of perforated pipes discharging air bubbles; another type has underwater pipes that direct streams of water against approaching waves to cause them to break. Breakwaters are also used to promote sedimentation, which, depending on the breakwater's alignment, will infill to produce a stable beach. The Chesapeake breakwater was the first built in the United States. See coast protectioncoast protection,
methods used to protect coastal lands from erosion. Beaches can exist only where a delicate dynamic equilibrium exists between the amount of sand supplied to the beach and the inevitable losses caused by wave erosion.
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breakwater

[′brāk‚wȯd·ər]
(civil engineering)
A wall built into the sea to protect a shore area, harbor, anchorage, or basin from the action of waves.

breakwater

1. a massive wall built out into the sea to protect a shore or harbour from the force of waves
2. another name for groyne
References in periodicals archive ?
Parts of the breakwall will be removed and other sections will be revamped to make it more functional to the school," said Franks.
Near Muskegon, he attempted to put the Cart between the breakwalls.
It's not the breakwall or the ocean divided against itself
Dubai UAE, 20 th January 2010 : Maui Jim the Official Eye Wear Partner at Abu Dhabi Golf Championship announces the launch of their Sports collection SugarBeach and Breakwall .
Army Corps of Engineers has been sampling the Indiana Harbor Canal breakwall for several years to gather data on changes in the nearshore fish communities of Lake Michigan.
The rehabilitated breakwall will be stabilized and include paved walking and bike paths, shaded seating areas, the introduction of a fishing platform and lighting.
A breakwall shelters the harbor from prevailing winds and waves, and heated discharge water from the nearby power plant keeps it ice-free, attracting large rafts of diving ducks.
At daybreak, the Muskegon Coast Guard crew lashed themselves together and walked the 3,000-foot breakwall to retrieve the shaken sailors.
The application was in excess of $1 million to upgrade the marina, including a breakwall," Dave Oates, past vice-president and now director of the association says.
The first record of the species from Indiana waters was a single, 152-mm-TL (Total Length) specimen collected during June 1993 from along a breakwall in Michigan City Harbor in LaPorte County.
6 million breakwall at Bethel will also be completed this year.
Contract Awarded to Upgrade Coffs Harbour's northern breakwall.