Marine & Hydrographic Surveys in London
Specialist surveys of vessels, pontoons, sea walls, moorings, and riverbeds — combining above-water capture with hydrographic measurement across London's waterways.
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Marine & Hydrographic SurveysService Overview
Marine structures and the water around them demand a survey approach built for the tidal, the floating, and the submerged. We survey vessels, pontoons, jetties, sea walls, moorings, and riverside structures along the Thames and London's waterways, combining above-water capture (laser scanning, photogrammetry, and aerial imagery) with hydrographic measurement of depths and the riverbed below the waterline. Marine engineers, harbour and marina operators, and waterfront developers use the data to plan maintenance and dredging, assess the condition of ageing river walls and structures, and design new pontoons and moorings with confidence in the levels, clearances, and bathymetry involved.
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Key Benefits
Accuracy & Methodology
We capture the above-water structure with laser scanning, photogrammetry, and aerial imagery, and measure depths and the riverbed with hydrographic methods, all tied to a common control and tidal datum. Tide observations are applied so that water-level readings reduce to the correct datum, and the above- and below-water datasets are merged into one coordinated model and set of sections.
Data & Deliverables
We export high-density spatial datasets ready for ingestion in leading architectural and civil engineering software.
- Bathymetric / riverbed depth models and contours referenced to Chart Datum
- Above-water 3D point clouds and CAD of vessels, pontoons, and river walls
- Condition and clearance reports for marine structures
- Combined above- and below-water sections and plans (.DWG)
Service Specific FAQ
Q: Can you survey both the structure above water and the riverbed below it?
Yes — that is the core of a marine survey. We capture the above-water structure with laser scanning, photogrammetry, and drone imagery, measure the depths and riverbed with hydrographic methods, and tie everything to a common control and tidal datum so the two datasets combine into one continuous model.
Q: How do tides affect the survey?
Tidal variation is accounted for throughout. We record tide observations during the survey and reduce all water-level and depth measurements to the appropriate datum (such as Chart Datum), so levels, clearances, and dredge volumes are calculated correctly rather than against a fluctuating water surface.