OUR Technical Expertise

Our Expertise: Underwater Works, Maritime & River Operations, and Rope Access Works

SIDON Construction delivers high-level expertise in the most demanding environments — underwater, in confined spaces, on rope, and within port infrastructures. Our skilled teams, composed of certified commercial divers and specialized technicians, operate across all of France to carry out complex and technical interventions.

UNDERWATER & HYPERBARIC OPERATIONS

SIDON Construction delivers specialized expertise to operate in the most complex environments — underwater, in confined spaces, on ropes, and within port infrastructures. Our technical teams, composed of certified commercial divers and skilled technicians, carry out operations throughout France.

Our divers perform underwater inspections, repairs, cutting, welding, and structural installations. Thanks to our Class 2A hyperbaric certification (France), we operate safely on all types of submerged structures — including ports, dams, wastewater treatment plants, and dikes.

Our core services include underwater inspection and diagnostics, repair of submerged structures and equipment, thermal cutting and recasting using BROCO torch, underwater welding, underwater coring, and submerged civil engineering works such as formwork, concreting, and injection.

MARITIME & COASTAL WORKS

RIVER & INLAND WATERWAY WORKS

Travaux en Hauteur & Accès Difficiles

Our specialized rope access technicians operate on hard-to-reach structures such as dams, cliffs, bridges, piers, and civil engineering works. We carry out inspections, surveys, coring, anchoring, and structural securing.

Fields of intervention include rope access inspection and maintenance, vertical wall coring, securing of high-access structures, and installation of sensors or technical equipment.

SIDON Construction operates on offshore and port structures such as quays, jetties, landing stages, and floating pontoons. Our teams handle the construction, maintenance, and upgrading of maritime infrastructures.

Examples of interventions include maritime dredging and cleaning, installation of piles, sheet piles, and mooring blocks, ecological mooring systems, and maintenance of both floating and fixed structures.

We carry out river works in both natural and canalized environments, including on locks, dams, bridge piers, and navigation signage systems. Our teams operate in full compliance with hydraulic constraints and regulatory requirements.

Key areas of expertise include river signage (piles, beacons, buoys), maintenance of locks and dams, river dredging, anchoring systems, formwork, and concreting in river environments.

At SIDON Construction, we do far more than dive underwater or scale structures. We deliver high-level technical know-how, mastered by certified commercial divers, hyperbaric technicians, and difficult-access specialists, to operate in environments where precision, safety, and discipline are absolutely essential.

Thanks to our versatility and adaptability, we work across port, river, maritime, industrial, energy, and environmental sectors. Our trades revolve around a clear objective: to ensure the durability of submerged or complex structures through concrete, sustainable solutions executed to the highest standards.

Our teams are deployable throughout France — from Marseille to Nantes, Bordeaux to Strasbourg — offering fast, tailored responses adapted to your technical challenges.

Have a specific need? An urgent site issue? A complex technical problem to solve?
Contact us — we bring hands-on expertise to support your project, wherever you are.

SIDON Construction – Specialist Skills for the Most Challenging Environments