Safe, precise underwater solutions for ports, harbours, energy sites and waterway infrastructure. UK and worldwide.
About Seawork
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.
Romsey, Hampshire · UK & worldwide
What we do
Experienced teams and a cutting-edge equipment inventory come together to deliver safe, efficient underwater operations across the UK and internationally.
Our core discipline. Experienced dive teams for complex, high-risk underwater operations, with rapid mobilisation and effective emergency response.
Non-destructive testing of steel and concrete marine structures, berths, fenders, pontoons, jetties, wharves and piers to maintain safe operation.
Inshore and offshore construction, repairs and modifications, delivered across the UK, Europe, Africa and the Arctic Circle.
Rapid-response marine and inland-waterway salvage. From regulatory notifications to emergency planning and execution, we manage the whole recovery.
Specialist entry into tanks, pipelines, ballast tanks and underwater structures for inspection, cleaning, repair and maintenance.
One of the best-equipped inland and inshore diving contractors in the UK, with our own resources serviced and maintained in house.
Industry-leading equipment engineered for the most complex marine environments, ready to mobilise.
Highly skilled personnel operating to the highest safety standards, above and below the water.
Innovation is at the core of Seawork's ethos, ensuring every operation is delivered successfully.
Serviced & maintained in house
Equipment
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.
A selection of projects and emergency responses delivered for ports, refineries, insurers and salvage companies.
A refuelling vessel lost control and struck a jetty, which collapsed and obstructed the berth. A diving team and crane barge recovered the concrete jetty over a 24-hour period to reopen the berth.
Following a major incident, Seawork righted and refloated a jack-up barge, then recovered a 250-tonne crane, 12 crane weights, jib, containers, control cabin, generators and cutting equipment in up to 30 metres of water on spring tides.
ABP Southampton instructed Seawork after a RoRo vessel struck the linkspan pontoons. The 120-tonne linkspan was partly deconstructed underwater to reach lifting points within a three-hour crane-barge window, with bespoke landing trestles fabricated on site.
Selected by the Icelandic Maritime Authority, Seawork carried out wreck investigation and body recovery in around 90 metres of water on the edge of the Arctic Circle, working from the coast guard vessel Thor using surface-gas techniques over a two-week operation.
On the River Severn, an area known for the Severn Bore, Seawork recovered an award-winning narrowboat that had sunk and filled with silt, doubling its weight.
Seawork recovered a 65-tonne dredger from a 30-metre-deep sand quarry, craning in a modular pontoon and workboat, removing dredge pipe, cables and walkways, and using flotation bags for the main lift.
Registered to ISO 9001, ISO 14001 and ISO 45001, and a founder member of the Association of Diving Contractors.
“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
“Your excellent approach and reaction to our project demands has been noted and reflected in our assessment to our supply chain team.”
Jamie Bee, Kier
Underwater inspections, repairs, salvage and marine construction, all conducted by certified commercial divers using industry-leading equipment.
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.
Yes. We offer 24/7 emergency response including vessel salvage, underwater repairs and urgent marine inspections to support critical maritime operations.
We provide marine contracting services across the UK and internationally, depending on project requirements. Contact us to discuss your specific location and needs.
Talk to our team about your next marine operation. We respond fast, mobilise quickly and work with you from first call to completion.