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.