Hydrographic & Geophysical Surveys

Sea Engineering offers a full range of hydrographic and geophysical survey services, including multibeam and single beam bathymetry, side scan sonar, subbottom profiling, magnetometer, underwater video, and ROV inspection surveys. Projects include harbor dredging surveys, seafloor benthic mapping,  fiber optic cable route surveys,pipeline and outfall route selection, magnetic anomaly detection, downed aircraft and lost anchor recovery, seafloor imaging, sand deposit investigations, and general site assessments. Surveys have been successfully completed around the world including remote locations such as Madagascar, Martinque, Fiji, Barbados, Kiritimati, Midway Atoll, Palau and Samoa as well as throughout the Hawaiian Islands and Continental U.S.

Hydrographic and Geophysical Equipment

  • Trimble and Leica Differential and RTK GPS
  • R2Sonics multibeam sonar system
  • SBG Ekinox MRU/INS
  • CMAX CM2 side scan sonar – 300/700 kHz
  • EdgeTech 216 Subbottom profiler
  • Odom Hydrotrac single beam sonar
  • Seamor Chinook inspection ROV
  • Sub-Atlantic Super Mohawk light work-class ROV
  • Garmin Panoptix scanning sonar
  • Underwater still, video and towed cameras
  • Nortek and Teledyne acoustic doppler current profilers and wave gauges
  • CTD profiler
  • Sound velocity probe
  • Vibracore system, grab sampler, push corer
  • Applied Acoustics underwater shore baseline positioning system

Capabilities

  • MBES and SBES bathymetry
  • Sub-bottom profiling
  • Sidescan sonar surveys
  • Magnetometer surveys
  • ROV inspections

Hydrographic & Geophysical Surveys Projects

Project Sea Engineering Service

Wave Energy Test Site Design and Construction Support

Client: Sound and Sea Technolgoy
Location: Honolulu,
Diving Services
Renewable Energy
Boat Services
Hydrographic & Geophysical Surveys
Keawaula

Keawaula Cable Route Survey

Client: Earth Sciences & Surveying
Location: Keawaula,
Hydrographic & Geophysical Surveys

Wave Energy Conversion Buoy Installation and Maintenance

Client: Ocean Power Technologies, Inc.
Location: Honolulu,
Renewable Energy
Boat Services
Diving Services
Hydrographic & Geophysical Surveys
Oceanographic Studies
Ehime Maru

Ehime Maru Recovery Site Surveys and Dive Support

Client: EDAW, Inc.
Location: Oahu,
Hydrographic & Geophysical Surveys
Fiber Optic Cable Landing Site Surveys

PAC Costa Rica Cable Survey

Client: Fugro Seafloor Surveys, Inc.
Location: Parrita, VI
Hydrographic & Geophysical Surveys
Beckoning Point Geophysical Surveys

Beckoning Point Geophysical Surveys

Client: U.S. Navy
Location: Pearl Harbor,
Hydrographic & Geophysical Surveys
Pearl Harbor Sediment Transport Evaluation

Pearl Harbor Sediment Transport Evaluation

Client: Earthtech; US Navy
Location: Pearl Harbor,
Hydrographic & Geophysical Surveys