Airborne & Mobile LiDAR, 3D Scanning & Modelling, Surveys

Hydrographic Surveys

African Consulting Surveyors utilises the latest technology in multi beam and single beam eco sounders as well as sub-bottom profiling equipment for underwater survey projects.

Our Services include:

  • Surveying for all types of port and harbours (existing and new builds)
  • Quays, jetties, marinas, accurate placement of mooring and navigation buoys
  • Pre and post dredging surveys
  • Navigation channels
  • Near shore, estuary and inland services provided, including bathymetry, tide and current measurements
Hydrographic surveys are essential for mapping and analyzing bodies of water, including oceans, rivers, lakes, and harbors. These surveys collect data on water depth, seabed composition, tides, and underwater structures to support navigation, coastal management, and marine construction. By providing accurate hydrographic data, these surveys play a crucial role in maritime safety and environmental protection.
Hydrographic surveys use advanced technology to capture underwater details with high precision. Key tools include:

Multibeam and Single-Beam Echo Sounders – Measure water depth and seabed topography.
Side-Scan Sonar – Produces detailed images of underwater features.
GPS and GNSS Systems – Ensure accurate positioning of survey vessels.
LiDAR Bathymetry – Uses laser technology to map shallow water areas.


These technologies work together to create accurate digital maps for marine applications.
Hydrographic surveys are vital for marine infrastructure development. Engineers rely on hydrographic data to design and maintain ports, harbors, offshore wind farms, and bridges. By analyzing seabed stability, sediment movement, and water flow patterns, these surveys help prevent structural failures and improve project efficiency.
Understanding underwater ecosystems is critical for environmental management. Hydrographic surveys aid in monitoring erosion, sediment transport, and coral reef health. Scientists also use hydrographic data to assess the impact of climate change on coastlines, track pollution dispersion, and support marine conservation initiatives.
The offshore energy sector, including oil, gas, and renewable energy projects, relies on hydrographic surveys to evaluate seabed conditions. Before installing offshore platforms or laying underwater cables, detailed hydrographic mapping ensures site suitability and minimizes environmental impact. These surveys also assist in locating underwater resources and assessing potential drilling sites.
Selecting the right hydrographic survey provider is essential for accurate and reliable results. Key factors to consider include:
Experience in marine and offshore surveying.
Use of high-resolution sonar and mapping technologies.
Compliance with industry standards and international regulations.
A strong track record in delivering data for infrastructure, environmental, and navigational projects.
Working with a qualified provider ensures high-quality data that supports safe and efficient marine operations.
African Consulting Surveyors
African Consulting Surveyors (ACS) is a leading geospatial service and solution provider. A company based on sound engineering and surveying principles we provide our clients with ‘out the box’ innovation, focusing on increasing return on investment (ROI) on our projects.
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