24/7 Emergency & Project Response
Romsey, Hampshire · UK & worldwide 0845 519 2833
Seawork commercial diver working at a tidal dockside
Established 1991 · UK South Coast

Commercial Diving & Marine Operations

Safe, precise underwater solutions for ports, harbours, energy sites and waterway infrastructure. UK and worldwide.

1991Established
0Dive teams
0Decompression chambers
0yrsHSE compliance

About Seawork

Setting the highest standards in marine services

Seawork Marine Services is a specialist diving company providing a full range of services to clients operating in the marine environment.

For over 34 years we have worked closely with our clients to deliver a high level of service and maximum value. Our personnel bring extensive experience and knowledge, combined with a superior equipment inventory, to give clients an unrivalled service.

  • We work with our clients, not just for them.
  • Long term relationships built through repeat business.
  • A service that exceeds expectations on safety and performance.
  • Professionalism above and below the water.
More about us
Seawork marine operations at London Gateway port Romsey, Hampshire · UK & worldwide

What we do

Marine services, delivered end to end

Experienced teams and a cutting-edge equipment inventory come together to deliver safe, efficient underwater operations across the UK and internationally.

Commercial Diving

Commercial Diving

Our core discipline. Experienced dive teams for complex, high-risk underwater operations, with rapid mobilisation and effective emergency response.

  • Highly experienced, extensively trained teams
  • Rapid emergency mobilisation at short notice
  • UK and overseas, where others can't
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Inspection & Testing

Inspection & Testing

Non-destructive testing of steel and concrete marine structures, berths, fenders, pontoons, jetties, wharves and piers to maintain safe operation.

  • UT and CP surveys for thickness and corrosion
  • HD video survey and ROV inspection
  • All marine structures, above and below water
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Marine Construction

Marine Construction

Inshore and offshore construction, repairs and modifications, delivered across the UK, Europe, Africa and the Arctic Circle.

  • Pipeline installation and scour protection
  • Docks, harbours, jetties and sea defences
  • Precision repairs in harsh, tidal conditions
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Salvage

Salvage

Rapid-response marine and inland-waterway salvage. From regulatory notifications to emergency planning and execution, we manage the whole recovery.

  • 24/7 emergency mobilisation
  • End-to-end project management
  • Safe recovery of complex, heavy items
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Confined Space

Confined Space

Specialist entry into tanks, pipelines, ballast tanks and underwater structures for inspection, cleaning, repair and maintenance.

  • HSE Confined Space ACOP and ADC standards
  • Breathing apparatus, ventilation, live monitoring
  • Pipelines, tanks, chambers and vessels
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Equipment

Equipment

One of the best-equipped inland and inshore diving contractors in the UK, with our own resources serviced and maintained in house.

  • 10 surface-demand dive teams
  • 4 decompression chambers, LARS and wet bell
  • Broco cutting/welding, UT, CP and HD video
Explore service
01

Advanced Technology

Industry-leading equipment engineered for the most complex marine environments, ready to mobilise.

02

Uncompromising Safety

Highly skilled personnel operating to the highest safety standards, above and below the water.

03

Expert Execution

Innovation is at the core of Seawork's ethos, ensuring every operation is delivered successfully.

Seawork ROV and inspection equipment Serviced & maintained in house

Equipment

State-of-the-art equipment & capability

Seawork can support 10 surface-demand dive teams simultaneously using containerised and trailer-mounted systems with air, nitrox and mixed-gas capability. Everything is fully serviced, certificated and ready to go, with back-up systems so downtime is not an issue.

10Surface-demand dive teams
4Decompression chambers
2ROVs for remote inspection
Air / NitroxMixed gas for all depths
View equipment

Proven performance in action

A selection of projects and emergency responses delivered for ports, refineries, insurers and salvage companies.

Accredited & independently assured

Registered to ISO 9001, ISO 14001 and ISO 45001, and a founder member of the Association of Diving Contractors.

Association of Diving Contractors
Constructionline
Achilles UVDB Silver Plus
RoSPA
JOSCAR registered
SSIP
Cyber Essentials

Trusted by industry leaders

Associated British Ports
Esso
ExxonMobil
Peel Ports
Kier
Vinci
Serco
Fugro Seacore
J Murphy and Sons
Ramboll
Freyssinet
JFD
Adler and Allan
Aston Martin
Vivo Energy

What our clients say

“Seawork worked extremely well to complete the works with a professional and cooperative approach, without accidents, incidents or any downtime. I have no hesitation in recommending them.”

Daniel Rees

“We are entirely happy with the services provided by Seawork and their approach of working 'with us' rather than 'for us' to arrive at a successful outcome.”

Andre van der Wiel

“High quality communication, teamwork and professionalism throughout. Good job.”

John Brand

“Regardless of the subsurface task, I have always found Andy and the Seawork team to be professional and responsive to all our requirements in many different locations.”

Martin Barnes

Frequently asked

What types of commercial diving services do you provide?

Underwater inspections, repairs, salvage and marine construction, all conducted by certified commercial divers using industry-leading equipment.

How do you ensure safety during marine operations?

Safety is our top priority. We adhere to strict industry regulations, employ highly trained professionals, and use state-of-the-art diving and marine equipment to maintain the highest standards.

Do you provide emergency marine services?

Yes. We offer 24/7 emergency response including vessel salvage, underwater repairs and urgent marine inspections to support critical maritime operations.

What regions do you operate in?

We provide marine contracting services across the UK and internationally, depending on project requirements. Contact us to discuss your specific location and needs.

Ready to discuss your project?

Talk to our team about your next marine operation. We respond fast, mobilise quickly and work with you from first call to completion.