CDMS SSE Ltd has a long, robust history, which began initially with the formation of Commercial Diving and Marine Services in early 1971. Since then the company’s name has changed, but the retention of the founding spirit has remained resulting in innovation dedication and reliability. Now after 47 years in the diving industry, the company can call on a wealth of experience gained over literally thousands of projects that have been successfully completed with a 100% safety track record. Over the years professional association with new clients and other organizations have further strengthened the company’s versatility, exposure, and commitment to deliver the best services available. This has resulted in CDMS SSE Ltd becoming an Industry leader in their specialist field of operations in Marine Construction, Utilities and Infrastructure and Maritime support worldwide.

The divers at CDMS SSE Ltd are fully qualified to the health and safety diving operations at works regulations and adhere strictly to the approved codes of practice. Furthermore, each diver has an annual medical examination to confirm good health and peak physical fitness. Our diving teams are trained in casualty handling, CPR and also hold first aid qualifications.

Project Diversity

CDMS Sub Surface Engineering Limited

A Leading Company in the Commercial Diving and Civil Engineering Industry since 1971

Our diverse and experienced teams of Commercial Divers enables CDMS Sub-Surface Engineering Limited
to offer its customers a complete and cost effective solution to Civil and Marine projects
within the Civil Engineering Industry.
Harbour & Sea Defences
Recent project diversity has found CDMS SSE Ltd expanding its service to locations as far as the South Atlantic to UK based Harbour and Sea Defence projects and marine construction operations in Northumberland, Dublin and Orkney.

Crane Barge Refurbishment
CDMS SSE Ltd has recently completed a full re-fit and total refurbishment of their 54-foot work boat with deck crane. The barge has been fitted with hydraulic spud legs to stabilize and assist support the deck cranes operation during heavy lifts.

ROV Remotely operated vehicles
CDMS SSE Ltd ROV Systems enable a safe and effective form of investigation on projects where diving personnel is not able to access without an initial safety survey. The ROV systems are also a valuable tool in the recovery of an object or missing persons.


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    Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings. Civil engineering is the second-oldest engineering discipline after military engineering, and it is defined to distinguish non-military engineering from military engineering.

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    Construction Work is a term for the process of adding structure to real property or construction of buildings, bridges, viaducts, basins, canals and river walls. All building construction projects include some elements in common – design, financial, estimating and legal considerations.

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    CDMS SSE LTD carry in stock over 250 tonnes of lifting bags. Our teams of Commercial Divers all have experience with the procedures of recovering a stricken vessel in fresh water rivers, estuaries, canals and at sea.

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    A confined space is one which is both enclosed, or largely enclosed, and which also has a reasonably foreseeable risk to workers of fire, explosion, loss of consciousness, asphyxiation or drowning.

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    CDMS SSE Ltd stock a large selection of safety boats from 6m and 9m RIBS to ex Royal Marine landing craft we have the solution for all safety boat requirements.

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    CDMS SSE Ltd working together with BRIMSTONE UXO to deliver a first class service in the detection and removal of unexploded ordinance.

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    We have worked closely with the BBC for many years and have the experience to deliver a service second to none, meeting all underwater filming or photography projects on time and in budget.

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    CDMS stock a large selection of ROV systems to meet any project brief. The benefits of using this type of equipment are that ROV’s can go down longer and deeper having not restrictions with time unlike a diver, who is limited to depth and time.

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    Our Work Boat with Deck Crane is ideally suited for marine salvage operations, heavy lifting, dive support, pipe laying, pile driving, and inland marine construction.

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    CDMS has a vast in-house stock of specialist equipment, this means the company has the ability to meet all project fully prepared and well equipped to complete the task, on time and in budget.

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    CDMS SSE Ltd take Health & Safety very seriously hence the company has a 100% safety track record. It is important to follow the guidance of other professional bodies to include CHAS and Achilles to remain safe in the working environment.

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    CDMS SSE Ltd has a containerized portable decompression chamber for onsite decompression safety of diving personnel.