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  • Within the last 5 years, widespread uptake of multi-beam sonar technology within the offshore survey industry has meant that swath bathymetry is becoming economic even within the nearshore region. As a result, the Southeast Strategic Regional Coastal Monitoring Programme has been able to upgrade their single-beam bathymetric surveys to achieve 100% seafloor coverage to IHO Order 1a standard through collaboration with the Maritime and Coastguard Agencyâ??s Civil Hydrography Programme. Although the main purpose is to survey the bathymetry of the seabed, the full coverage bathymetry combined with acoustic backscatter information collected during the swath bathymetry survey can be integrated with ground-truthing information to produce a series of detailed maps.