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
Remote Survey

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.