Ports, rivers & coastal works
Marine & Water
Below the waterline, assumptions are expensive. SEC brings hydrographic survey, positioning and geospatial data to ports, channels, rivers and coastal projects — so marine engineering starts from current survey data, not assumptions.
Sector challenges
What water hides from engineering
Unknown bed conditions
Berths, channels and intakes designed or maintained without current survey data below the waterline.
Sedimentation and change
Riverbeds and basins that move — yesterday's chart is not today's clearance.
Submerged obstructions
Debris, wrecks and lost structures that complicate dredging and marine works.
Land–water data splits
Coastal projects where land and water survey data live in different datums and never meet cleanly.
Project lifecycle
One survey chain across the waterline
01
Positioning & datum control
GNSS control and vertical datum definition connecting land survey to water survey.
- CORS Network & RTK Services
- Control Networks & Benchmarks
02
Bathymetric survey
Survey of berths, channels, rivers and reservoirs below the waterline — see the linked service pages for scope.
- Hydrographic Survey
- Bathymetric Survey
03
Side scan sonar survey
Included in the survey scope where the project requires it — scope described on the service page.
04
Shoreline & coastal mapping
UAV and topographic capture of shorelines, structures and the land–water interface.
- UAV & Aerial Survey
- Topographic Survey
05
Geotechnical support
Ground investigation for quay walls, marine structures and waterfront foundations.
06
GIS integration
Water-area and shoreline survey data merged into one geospatial model of the site.
07
Engineering deliverables
Charts, sections, volumes and reports formatted for dredging, design and marine operations.
Technology approach
Methods above and below the waterline
Hydrographic methods
The scope of each marine survey method is described on the linked service pages.
Positioned on the network
Water-area and shore measurements tied to GNSS network positioning share one datum with the land survey.
Seamless surface models
Land and water surface data processed into continuous models across the waterline for design and volumes.
Field equipment
CHCNAV
CHCNAV i83 GNSS
A multi-constellation GNSS receiver used for field survey work referenced to the project frame.
What you receive
From survey to decisions
- Hydrographic survey charts and surface models
- Dredging sections and volume computations
- Shoreline and coastal topographic plans
- Combined land–water surface models
- Hydrographic survey reports
Survey the bed before you commit the works.
Berth, channel, river reach or intake — SEC can scope the hydrographic and coastal survey your project needs.