Three Men Analyzing the Shoreline

Marine Cable Route

Williamson & Associates has completed multiple route surveys, most recently in the Caribbean in 2015. Route surveys ranging from inshore projects to transcontinental projects have been successfully undertaken by Williamson's team of geophysicists and hydrographers.  The company maintains relationships with vessel operating and other geophysical and survey companies in all areas of the world. Williamson's vessel database details suitable survey vessels located in over a dozen countries and covers every ocean of the world. The database includes vessels with the deep water capable multibeam echosounders needed to cover full-ocean depth route surveys in the Pacific and Atlantic Oceans. Williamson has a track record of flexibility working with a wide range of equipment and mobilizing worldwide. We have a continuing relationship with GeoMarine Technologies of Missoula, Montana for interpreting and reporting.


We conduct:

  • Desktop Studies
  • Permiting Investigations and Acquisitions
  • Landing Site Evaluations
  • Diver and Small Boat Surveys
  • Offshore Surveys in Depth from 5 to 6000 Meters
  • Magnetic Surveys to Locate In-Service and Out-of-Service Cables and Pipelines
  • Burial Assessment Coring
  • C-BASS and CPT Work
  • Final Reporting

Woman Steering Boat Off Chikura Japan Coastline


Ship at Sea Launching Survey Recording Equipment

Technologies for Cable Route Surveys Include:

  • Sidescan Sonar
  • Multibeam Sonar
  • Sub-bottom Profiling
  • Magnetometer Surveys
  • C-BASS Resistivity
  • CPT Soil Penetration Testing
  • Core Sampling
  • Induced Polarization
  • DGPS and USBL Positioning
  • Land Surveying



Mapping Sonar System

Seafloor Survey Configuration Display