We conduct hydrographic and geophysical surveys and more commonly projects combining both these disciplines. From adhering to IHO S-44 standards (ranging from Exclusive Order to Order 2), typically reserved for ensuring vessel navigation safety, supporting dredging operations, and producing navigational charts, to conducting route and engineering surveys, search operations, pipeline inspections, and infrastructure mapping, as well as environmental and habitat assessments and feasibility studies.
With an extensive inventory of survey equipment, we offer hydrographic and geophysical survey solutions from coastal environments to full ocean depths. Our typical projects involve using high-resolution multibeam echo sounders (including shallow water-specific and deep water-specific systems), side scan sonars, sub-bottom profilers (pingers, chirps, sparkers, boomers), high-resolution digital seismic systems, and refraction systems.
In the Energy, Submarine Telecommunications, and Marine Infrastructure sectors, EGS delivers near real-time reports by seamlessly integrating data acquisition and processing from multiple survey equipment, charting, and reporting to meet client deadlines.
Our offshore construction personnel possess diverse expertise, enabling us to customise teams according to your project requirements. Our project managers, engineers, and surveyors are encouraged to be innovative in finding optimal solutions for our clients, seamlessly integrating with existing teams to reduce costs and enhance safety throughout the project lifecycle.
EGS provides a comprehensive suite of survey and positioning services to support offshore construction, including:
We deploy equipment, offshore, near shore or onshore for measuring wave height, weather or currents through the whole water column for short term; over a few days, or long term; over several years. We also routinely measure multiple seawater parameters, either on the sea surface or as a profile through the whole water column, such as temperature, salinity, turbidity, dissolved oxygen and methane.
We will plan and deploy equipment arrays needed to model tide datums over your work area. This can range from complex water level measurements from multiple sensors over a large area for several months to a single tide gauge installed on shore for a matter of hours. We will recommend the best cost-effective solution tailored to your requirements.
We have an extensive marine geotechnical capability to meet the increased demand for integrated hydrographic and geophysical and geotechnical surveys from the shore to the deep ocean using vibrocorers, piston corers, box corers or Cone Penetrometer Testing (CPT) systems.
We routinely conduct seabed sampling for ground truthing of sediment classification which is often a requirement of hydrographic and geophysical surveys. We can conduct testing of samples in field using our mobile geotechnical laboratory or we store samples for further testing depending on your requirements.
Geotechnical services are conducted using our DP2 offshore drilling vessel, EGS jack up barges or vessels of opportunity.
We carry out a variety of terrestrial services in support of our offshore or near shore operations or as standalone projects from installation of survey control points and vertical benchmarks and installation of tide gauges and GNSS base stations to full 3D mapping of above water features and infrastructure using 3D photogrammetry with aerial drones.
Other terrestrial services include:
We provide Unexploded Ordnance (UXOs) detection surveys to port authorities, energy companies, the renewable energy sector, cable installers, dredgers and offshore contractors prior to any offshore operations. We offer bespoke solutions, working with UXO consultants, to generate survey designs to optimise efficiency whilst acquiring high quality data for UXO assessment.
