Ports, harbours and dredging.
Hydrographic survey for the people who dredge, build and berth: known depths, known volumes, known ground.
What the work covers.
Pre- and post-dredge surveys
Multibeam bathymetry to the IHO S-44 order your specification sets, on a defined datum and with stated uncertainty.
Volume computation
Surface differencing and payment volumes, with the method, the grid and the accuracy written beside every figure.
Tide and water-level control
Tide gauge and GNSS-derived levels, with the relationship between survey, chart and project datums stated.
Berth, channel and quay checks
As-built and clearance verification, with scour and siltation monitoring on repeat surveys.
Obstruction and debris search
Side-scan and magnetometer search for wrecks, debris and buried objects before dredging or piling starts.
Charts and data
Hydrographic charts and CAD- and GIS-ready surfaces, processed and reported in-house.
You receive.
- Gridded surfaces and difference models
- Volume statements with method and accuracy
- Channel charts and cross-sections
- Survey report with stated accuracy and checks
Who we work with
- Port authorities and terminal operators
- Dredging and marine construction contractors
- Developers of jetties, intakes and outfalls
- Owners checking a contractor's measured volumes
Regulators and permits differ by country, so we plan each mobilisation around the host authorities. Processing, interpretation and reporting are done in-house. One agreement, one invoice, one point of contact.
Planning something offshore? Let's talk it through.
Tell us what you are trying to achieve. If we are the right fit, we will say how we would run it. If we are not, we will say that too.