Breakwaters Shoreline Protection Breakwaters can be constructed with one end linked to the shore, in which case they are usually classified as sea walls; otherwise they are positioned offshore from as little as 100 m up to 300–600 m from the original shoreline. There...
Maintenance Dredging involves the removal of unwanted silt, sand or sludge from existing waterways that are already dredged at some earlier point. It is usually somewhat shallow and is performed by a hydraulic cutterhead dredge and involves depths from 3′ to...
Dredging marinas, rivers, canals, reservoirs to depths up to 40' is usually performed with a basket cutterhead "spud" dredge that enables the dredge to walk forward on the ocean or river bed. Although this dredge can also be used for maintenance, it can...
