To be classed as maintenance dredging the activity must take place where: It involves removing recently accumulated sediments such as mud, sand and gravel Maintenance dredging is undertaken to keep channels, berths and other areas at their designed depths.
Capital dredging is generally undertaken to create or deepen navigational channels, berths or to remove material deemed unsuitable for the foundation of a construction project Capital dredging is dredging to a depth not previously dredged, or to a depth not dredged within the last 10 years.Aggregate dredging - to extract sands and gravels for construction purposes.ĭredging typically falls into two categories:.Clearance dredging will usually require a licence but may be suitable for self-service licensing. Clearance dredging - to remove material which has accumulated around a structure or asset for a purpose other than to facilitate navigation.If your activity is not exempt then some dredging activities may be suitable for an accelerated licensing process. Navigational dredging will usually require a licence but there is an exemption available for low volume dredging and harbour authorities in certain circumstances. Navigational dredging - to deepen berths and channels for the purpose of navigation.It includes the removal of material from the sea bed entirely. A marine licence is required to carry out a dredging activity in English Waters or Northern Ireland offshore waters.ĭredging involves the use of any device to move material (whether or not suspended in water) from one part of the sea or sea bed to another part.
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