Hydrographic & Geophysical

Hydrographic & Geophysical

CSA utilizes a variety of subsea survey techniques to support coastal development, ports, harbors, dredging, subsea infrastructure, oil and gas activities, and various other government and commercial projects worldwide. Our field survey teams work closely with our Environmental Data Geospatial Systems (EDGS) team to provide underwater imaging and various spatial studies related to our client’s project area.

In order to meet the criteria of the project environment, CSA offers a wide variety of advanced survey platforms. These survey platforms range from shallow draft unmanned surface vessels (USVs) to integration on deep ocean vehicles such as autonomous underwater vehicles (AUVs) and remote operated vehicles (ROVs). Our operations teams can also capture aerial imagery via our Wide Array Aerial Survey Platform (WAASP) drone.

CSA also owns and operates its own fleet of coastal survey vessels that are capable of a wide range of project tasks including sediment, water, and biological sampling; hydrographic and geophysical surveys; video documentation; and metocean services. The CSA Surveyor is the newest addition to CSA’s fleet of coastal survey vessels. The custom-built aluminum catamaran is designed to conduct a wide range of hydrographic survey, environmental monitoring, and light geotechnical work. The Surveyor has the ability to simultaneously run an assortment of hydrographic survey equipment, including side-scan sonars, sub bottom profilers, multi-beams, magnetometers, and towed video sleds. With an on-board hydraulic winch capable of deploying over 1,000 m of coaxial cable, the Surveyor can support projects from coastal waters to beyond the continental shelf.

CSA’s operations team is well-trained across a wide spectrum of hydrographic and geophysical instrumentation and their respective applications. They have extensive experience with adaptive platforms and mobilizing them in extremely remote locations using either on our own assets or vessels of opportunity. Our equipment is owned and operated by CSA and strategically located among our global offices to in an effort to serve our clients in the most cost effective and efficient manner possible.

CSA’s primary underwater imaging systems

  • Acoustic Imaging
    • Single Beam and Multi-beam Echo Sounders
    • Side Scan Sonar
    • Sub Bottom Profilers
    • Scanning Sonar
    • Acoustic Doppler Current Profilers (ADCP) / Current Meters
  • Magnetometry
    • Magnetometers
  • Video Documentation
    • High and standard definition video
    • High resolution still photography

CSA utilizes various platforms to collect underwater and aerial imagery:

  • Diver Held with Doppler Navigation (AAUS certified)
  • Costal Survey Vessels
  • Tow Sled
  • Remote Operated Vehicle (ROV)
  • Unmanned Surface Vessel (USV)
  • Autonomous Underwater Vehicle (AUV)
  • Wide Array Aerial Survey Platform (WAASP) – Drone

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