Why undertake hydrographic surveys?

Seabed bathymetry and digital terrain models (DTM) for navigation assessment
Support dredging operations – pre and post surveys and  volume calculations
Determine sedimentation levels or thickness
Seabed habitat mapping
Geophysical survey to determine seabed sub-structure and composition
Seabed sampling and geotechnical analysis

What are the benefits?

Determine seabed form and terrain
Identify seabed type, features, objects, debris and object detection
Determination of sediment thickness
Shallow geophysical analysis – 0 to 10m below seabed

Where could I apply hydrographic services?

Dams
Rivers
Ports and harbours
Mine workings & infrastructure
Marine environmental and benthic surveys
Support marine construction activities – pipelaying, beach pull landings etc

What survey systems and solutions do we provide?

Single beam echo sounders (SBES) – single and dual frequency
Multibeam echo sounders (MBES)
Attitude and heading reference systems (AHRS)
Tide gauges
Sound speed sensors and probes
Side scan sonars
Sub-bottom profilers
Real-time data acquisition systems – software and hardware
Laser scanners
Drop and piston corers
CPT

Why so many platforms?

Land Surveys has access to a range of hydrographic survey sensors, platforms and state of the art technology and software, enabling us to deliver a unique, tailored data solution to your specific needs. Survey systems are selected based on scope of work, water depth, operating frequency, range from shore, accuracy requirements, seabed conditions and size of vessel.