Subsea Intervention Operation
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Grouting Equipment
CCC Underwater Engineering owns and operates multiple complete spreads dedicated to subsea grouting operations. These systems support a wide range of underwater engineering activities, including:
- Free span correction using grout bags or mattresses
- Pipeline stabilization using protective mattress systems
These solutions ensure improved stability and structural integrity for subsea pipelines and infrastructure.

Concrete Sleeper Installation
We have experience in the installation of concrete sleepers ranging from 10Te to 75Te. Installation operations can be performed using ROVs or divers from dedicated vessels, depending on project requirements. Concrete sleepers are typically installed prior to pipe-laying operations to stabilize existing crossings along the designated pipeline route.

Concrete Mattress Installation
In addition to grouting operations, CCC Underwater Engineering installs link-lock mattresses on existing subsea infrastructure to enhance stability and protection. The company owns and operates specialized deployment frames for link-lock mattresses, which can be deployed using ROVs or divers to ensure precise and efficient installation.
CCC Underwater Engineering’s grouting equipment supports activities such as free span correction using grout bags or mattresses and pipeline stabilization to improve the safety and integrity of subsea infrastructure.
CCC Underwater Engineering installs concrete sleepers ranging from 10Te to 75Te using ROVs or divers from specialized vessels, typically before pipe-laying operations to stabilize subsea crossings.
Yes, CCC Underwater Engineering installs link-lock mattresses on existing subsea infrastructure using specialized deployment frames operated by ROVs or divers to enhance stability and structural protection.
Clients benefit from experienced engineering teams, specialized equipment, and precise execution, ensuring enhanced stability, reduced operational risks, and long-term reliability of subsea infrastructure systems.


