Hydrographic & Bathymetric Surveys

We deploy a range of advanced acoustic technologies from dedicated survey vessels or Unmanned Surface Vessels (USVs), selected based on your site’s specific depth and access requirements.

Bathymetric Surveys (Multibeam & Singlebeam): The core of our offering is precision bathymetric mapping. We map the topography of the underwater terrain to centimetre-level accuracy.

• Multibeam Echosounder (MBES): Captures a dense “point cloud” of the entire riverbed, revealing subtle features, scour holes, and bedforms in 3D.
• Singlebeam Echosounder (SBES): Efficient for cross-sectional profiling in shallow rivers, canals, or for verifying dredge depths.

Hydrological Survey & Flood Risk: Understanding water flow and capacity is critical for flood modelling. Our hydrological survey data provides the precise riverbed profiles needed to calculate flow rates and flood storage capacity accurately.

Bridge Scour & Asset Inspections: Scour is the leading cause of bridge failure over water. As a specialist bathymetric surveyor, we use high-frequency sonar to inspect the base of piers and abutments.

• Scour Assessment: Quantifying the depth and extent of scour holes that threaten structural stability.
• Asset Condition: Detecting undercutting or damage to retaining walls, outfalls, and aprons.

Siltation & Dredging Support: We provide the bathymetric data needed to maintain navigable waterways and flood capacity.

• Pre & Post Dredge Surveys: Calculating precise cut-and-fill volumes to validate contractor works.
• Silt Profiling: Using Sub-Bottom Profilers (SBP) to determine the depth of soft sediment overlying hard rock.