About us
ESUBSEA has developed a cutting-edge in-situ seabed cable jointing system, providing a reliable solution for jointing and repairing high-voltage subsea power and data cables.
Initial applications of the in-situ seabed cable jointing system, were developed to facilitate divers installing subsea cable joints in-situ on the seabed. Further developments of DRYSPACE now enable cable connections to be carried out remotely on the seabed, without the need for diver intervention.
This next generation seabed cable jointing technology represents a significant advancement in subsea cable installation and repair. Using DrySpace, ESUBSEA can perform remotely operated subsea connections for cable installation and repairs directly on the seabed, eliminating the need to lift cables after installation and minimizing project time and risk.
With DrySpace, our team delivers efficient, safe, and high-quality subsea cable solutions, supporting the growing demands of offshore power and data networks.
Installation & Repair
The proprietary subsea connection system, was specifically engineered to enable cable connections directly on the seabed by creating a controlled, dry working environment around the cable. This eliminates the need to recover the cable to the surface, significantly improving efficiency and reducing operational risk and cost. The system has direct application for the offshore floating wind industry, cable repair market and long interconnector AC transmission circuits. By maintaining a dry environment around the subsea cable connectors, the system has application in the voltage range of 66kV to 220kV.
DrySpace is installed around the cable on the seabed and incorporates high-accuracy pressure transducers, a nitrogen purge system equipped with dew point meters to continuously monitor moisture levels, and an advanced HD camera system. This live video feed allows our control centre onboard the vessel to closely monitor and manage the cable jointing process in real time.
DrySpace is protected by global intellectual property and represents a key part of our commitment to delivering safe, efficient, technologically advanced subsea cable repair solutions.
Our projects
Our projects have included supporting critical electricity infrastructure conectors such as the Moyle Interconnector and Aran Islands Interconnector.
The Moyle interconnector, which links the transmission networks of Scotland and Northern Ireland, has a capacity of 500 MW, achieved through two 250 MW, 250 kV HVDC cable links connected to converter stations. Between 2010 and 2012, the system experienced recurring faults caused by issues with the polyethylene insulation layer around the return conductor.
Traditional repair methods required lifting the cable to the surface, which was costly and risked further damage. To address this, DrySpace introduced an innovative in-situ repair method that allowed engineers to safely repair the subsea cables directly on the seabed, significantly reducing both cost and repair time.
DrySpace was also successfully deployed on the Aran Islands - Inishmore, Inishmaan and Inisheer - located off the west coast of County Galway. In 2016, the subsea cable supplying power to Inishmaan and Inisheer was damaged, causing a loss of electricity to both islands. Working with ESB engineers, DrySpace was used to complete a successful seabed repair without raising the cable to the surface.
The Moyle interconnector, which links the transmission networks of Scotland and Northern Ireland, has a capacity of 500 MW, achieved through two 250 MW, 250 kV HVDC cable links connected to converter stations. Between 2010 and 2012, the system experienced recurring faults caused by issues with the polyethylene insulation layer around the return conductor.
Traditional repair methods required lifting the cable to the surface, which was costly and risked further damage. To address this, DrySpace introduced an innovative in-situ repair method that allowed engineers to safely repair the subsea cables directly on the seabed, significantly reducing both cost and repair time.
DrySpace was also successfully deployed on the Aran Islands - Inishmore, Inishmaan and Inisheer - located off the west coast of County Galway. In 2016, the subsea cable supplying power to Inishmaan and Inisheer was damaged, causing a loss of electricity to both islands. Working with ESB engineers, DrySpace was used to complete a successful seabed repair without raising the cable to the surface.
This approach significantly reduced the duration and cost of the repair campaign and demonstrated a new benchmark for subsea cable repair within the global cable industry.
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