Marine Dredging Survey

National Line Survey has significant expertise in performing hydrographic and marine geophysical surveys to support dredging and seabed leveling initiatives. Our services have been instrumental in port and harbor development, navigation channel maintenance, land reclamation, environmental remediation projects, trenching for pipelines and cables, as well as the creation of artificial islands.

With a team of skilled professionals and state-of-the-art survey technology, NLS is equipped to provide a comprehensive array of dredging support services, including pre-dredge, post-dredge, and interim surveys for capital and rehabilitation efforts. Leveraging multi-beam echo sounder technology, integrated with real-time kinematic (RTK) positioning and motion sensor data, we obtain the precise depth measurements necessary to monitor dredging operations. Our clients benefit from baseline bathymetry data, complete sediment volume assessments, and identification of accretion or erosion zones, all of which help to meet the planning and design goals of dredging projects.

NLS offers dredging support services in any environment, including coastal areas, congested harbors, and navigation channels, with 24/7 support available as needed. If additional information is required on sediment types, subsurface geology, or seabed hazards at the dredging site, we can also utilize side-scan sonar, magnetometer, subbottom profiler, and geotechnical sampling techniques.

-Pre-dredge surveys
-Post-dredge surveys
-24/7 dredge monitoring support
– Dredge volume analysis
Geotechnical and environmental samples