Marine & inland water
Hydrographic Survey
Hydrographic and bathymetric surveys that map waterbeds, channels and marine infrastructure with the same rigor we apply on land.
Service scope
- Bathymetric Survey
- Side Scan Sonar
Overview
Rivers, reservoirs, ports and offshore sites hide their geometry under water. SEC runs sounding campaigns with positioning tied to survey control, corrects for water conditions, and issues bathymetric surfaces and charts within the scope agreed for the project.
Applications
River & channel surveys
Cross-sections and thalweg profiles for hydraulic studies.
Reservoir & intake studies
Capacity surfaces and sedimentation comparison surveys.
Port & dredging support
Pre- and post-dredge bathymetry and berth clearance surveys.
Crossing & outfall routes
Waterbed profiles for pipeline and cable crossings.
SEC Capability
Positioning discipline afloat
Vessel positioning tied to GNSS control and monitored throughout acquisition.
Corrected, not raw, depths
Sound velocity, draft and water level corrections applied and documented.
Workflow & Methodology
- 01Campaign planningLine plans, datum and water-level strategy defined.
- 02Sounding operationsSystematic acquisition with continuous positioning control.
- 03Corrections & processingVelocity, tide/level and outlier processing with QA.
- 04Charts & surfacesBathymetric models, contours and sections delivered.
Deliverables
- Bathymetric surfaces and contour charts
- Channel cross-sections and profiles
- Volume computations for dredging
- Survey report with applied corrections