Civils & Construction Diving and Confined Spaces

Specialist Support for Marine Infrastructure Projects

At Diveworks International Ltd, we provide expert commercial diving services to support civil engineering and marine construction projects across the UK and internationally. From bridge footings and quay walls to culverts, pipelines, and cofferdams, our dive teams are trained and equipped to operate in the most challenging environments—delivering safe, efficient, and compliant solutions.

Our Construction Diving Capabilities

We support a wide range of inshore and offshore construction activities, including:

• Underwater Welding & Burning
  Structural welding and cutting using qualified coded welders and IMCA-compliant procedures.
• Concrete Placement & Grouting
  Installation of underwater formwork, tremie pours, and grout bag placement for scour protection and structural reinforcement.
• Pile Inspection & Repair
  Visual and NDT inspection, cleaning, and repair of steel and concrete piles.
• Drainage & Culvert Works
  CCTV inspection, blockage clearance, and fabrication/installation of protective grilles and flow control structure
• Rigging & Lifting Support
  Underwater rigging, slinging, and load handling for marine construction and salvage operations.
• Confined Spaces Temas
  Available for dredging works inspection and repairs.
• Cofferdam & Sheet Pile Support
  Dive support for installation, inspection, and sealing of cofferdams and sheet pile walls.

Certified Teams & Equipment

Our dive teams are led by ADC-qualified supervisors and include experienced civil divers trained in confined space entry, hydraulic tooling, and heavy construction techniques. We operate with:

• HSE or IMCA compliant containerised and mobile dive spreads depending on the clients needs
• Surface-supplied air systems with HD video and comms
• Fully certified backup equipment and spares
• Integrated safety systems and environmental controls

All operations are supported by detailed risk assessments, method statements, and real-time video documentation.

Project Experience

We’ve supported a wide range of civil and construction projects, including:

• Moat clearance and drain repairs
• Quay wall welding and frame installation for a green energy system at Portsmouth Port
• Confined spaces – dredging out culverts in Chatham docks to assist with bringing the caisson gates back fully operational.
• Bridge and culvert inspections across ports and inland waterways

Our teams are equally at home in tidal estuaries, confined pits, and black water environments, bringing the same level of professionalism and safety to every job.

Why Choose DWI?

• ISO 9001, 14001, 45001 certified
• Constructionline Gold member
• Based in Poole and Southampton operating nationally and internationally
• Fully integrated servicing and logistics hub
• Fully IMCA and DNV compliant PMS system