Geosurvey

Geosurvey Services

The survey services offered by Spectrum Offshore use a wide variety of state-of-the-art technology, including the following methodologies:

  • High-resolution multibeam bathymetry & backscatter
  • Side scan sonar
  • Shallow seismic & parametric sub-bottom profiler
  • Magnetometer & gradiometer
  • RTK positioning
  • Drop-down video cameras
  • Grab sampling
  • Unmanned Aerial Vehicles

Construction support survey


Spectrum work closely with clients to provide surveys to support offshore construction and engineering projects.

  • Catenary imaging
  • High-Voltage (HV) cable & pipeline depth of burial
  • Scour monitoring
  • Cable monitoring
  • Real-Time Kinematic (RTK) positioning service setup & support
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Hydrographic survey


Spectrum provide IHO S-44 standard bathymetric survey capability to support a wide-range of offshore projects & site investigations.

  • High-resolution & high-density multibeam bathymetry & backscatter surveys
  • Port & harbour surveys
  • Nautical charting surveys
  • Wreck & archaeological surveys
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Marine geophysical survey


Spectrum provide geophysical survey capability to support a wide-range of offshore projects & site investigations.

  • Parametric sub-bottom profiler (SBP) surveys
  • Pipeline & cable depth of burial surveys
  • Seismic data acquisition, interpretation & mapping
  • Unexploded ordnance (UXO) surveys
  • Marine aggregate surveys
  • Seabed sediment mapping
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Site investigation survey


Spectrum provide site investigation surveys that help with planning & design of construction & engineering projects.

  • Seabed feature & object detection surveys (boulder, debris, ferrous objects & potential UXO etc.)
  • Pipeline & cable route surveys
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Consent & licensing surveys


Spectrum provide baseline and monitoring marine surveys to help meet consent and licensing requirements.

  • General Visual Inspection (GVI) surveys
  • Unmanned Aerial Vehicle (UAV) surveys
  • Asset monitoring surveys
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Dimensional control surveys & Positional checks


Spectrum provide dimensional control surveys & positioning checks to support vessel mobilisations & system calibrations

  • Service to provide accurate sensor offsets & rotations
  • Improves data accuracy & quality for vessels undertaking marine survey & construction support
  • Helps to determine error budgets to fulfil project specifications & requirements.
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Unmanned Aerial Vehicle (UAV) surveys


Spectrum provide the latest in-house technology and methodology to provide cost effective solutions to the offshore and onshore industrial and construction sectors.

  • In-house team of five pilot/surveyors with CAA-approved Permission for Commercial Operation (PfCO)
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GIS, charting & deliverables


Spectrum are motivated to provide solutions that ensure data can be used in the way our clients expect. Spectrum can provide deliverables & associated metadata that can be used in both GIS and CAD environments.

  • GIS & CAD digital data deliverables & associated metadata (MEDINS, ISO etc.)
  • Charting
  • Data integration
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