Hydrographic
Survey

Geophysical
Survey

CONSTRUCTION SUPPORT

GEOMATICS

GEOPHYSICAL
SURVEY

PERSONNEL
TRANSFER

CONSTRUCTION SUPPORT

HYDROGRAPHIC
SURVEY

POST-CONSTRUCTION ENGINEERING
SURVEY

GEOMATICS

Welcome to Spectrum

Spectrum is an independent group founded in 2010 that consists of two business units:


 

Spectrum Vessel Services

Spectrum Vessel Services, based in Ramsgate, UK, are a leading provider of marine services in the UK and Northwest Europe, specialising in crew transfer and survey vessel operations. Our commitment to safety, efficiency, and professionalism sets us apart in the industry. Spectrum Vessel Services own and operate five crew transfer vessels that operate in the offshore renewable and cables sectors.

All Spectrum vessels have been purposefully modified to accommodate a survey capability that does not impact their original design to conduct safe, fast, comfortable transport and transfer of personnel and cargo to offshore assets.


 

Spectrum Geosurvey

Spectrum Geosurvey conduct high resolution hydrographic, geophysical and UXO surveys for offshore renewables, construction, marine aggregates and nautical charting sectors.

Based in Lymington, UK survey operations are conducted throughout the UK, Europe and North America.






"Spectrum are one of a few companies that over the years have conducted the work scope, economically, efficiently and on time with only minor client supervision."

- UK offshore wind farm construction package manager
 

Geosurvey Services

Our experienced team are committed to providing the highest quality marine survey solutions to our clients.

 

About Us

Our team has many years' experience in the offshore, renewable energy and survey sectors.

 

Vessel Services

Our team have a wealth of knowledge, experience and contacts in the marine industry.

 

Past Projects

View our current and past projects here.

 

QHSE

We are proud of our pro-active QHSE culture.

 

Careers

We are looking to recruit focused and driven individuals to our diverse organisation.

 








 

Feb 2026

Mobilising an uncrewed vessel for construction support


Spectrum surveyors have been busy leading the kit-out of Ørsted ’s uncrewed surface vessel (USV) to provide survey support for Hornsea 3 construction - set to become the world’s largest single offshore wind farm with a capacity of 2.9 GW.

The Ø𝘳𝘴𝘵𝘦𝘥 𝘌𝘹𝘢𝘮𝘪𝘯𝘦𝘳 will be controlled from an onshore remote operations centre, alongside a Spectrum team who will deliver high-resolution mapping of seafloor depths and morphology to support the installation phase of Hornsea 3’s foundations.

The project has attracted media interest, with Senior Surveyor Daniel Plewman briefing the BBC on the quayside shortly after the vessel launch.

Project Manager Adam Franks has been leading the mobilisation of the primary sensor - a KONGSBERG EM 2042 multibeam echosounder - on what he describes as “a novel and exciting project, demonstrating the progression and scalability of uncrewed survey solutions and remote operations.”

Through the construction phase, Spectrum will continue to control data acquisition from our own remote operations centre in Lymington, Hampshire.

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Nov 2025

Maritime Robotics AS Otter

 

An exciting recent deployment of the Maritime Robotics AS Otter for bathymetric data acquisition delivered excellent results - enabling us to achieve detailed coverage in challenging shallow-water environments, out of reach for a conventional survey vessel.

Equipped with NORBIT Subsea 's i77 MBES with integrated Trimble Applanix GNSS/INS, our teams collected IHO Special Order standard data with improved efficiency and reduced risk - a great example of how innovative autonomous solutions and sensor integration can transform nearshore survey operations.

Thanks to our team and partners at Environmental Sensing at the University of Southampton (ES@S) for their expertise in making this mission a success - we look forward to putting this exciting survey platform to work on future projects.

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Nov 2025

AeroMAG® Unmanned Aerial Magnetometer (UAMS)

 

Great to see our AeroMAG® Unmanned Aerial Magnetometer (UAMS) performing flawlessly during this cooler spell in the UK - though at first glance, you’d think it was summer. Perfect conditions in the environment it was built for.