Irish Sea Contractors is at the forefront of the industry, providing a wide range of services for our clients. Check out some of our recent projects to discover what we can do for you.
Subsea Cable Projects
Power station shore end civils
Irish Sea Contractors delivered all shore-end civil works, including cable burial and protection, on seven power cable crossings (x3.5 km) on the River Shannon at Moneypoint Power Station. These power cables transmit all windfarm energy from Cork and Kerry into the grid at Moneypoint.
Cable installation & burial of fibre optic cable
Irish Sea Contractors delivered on the installation and burial of a 4 km fibre optic cable to the Marine Institute's offshore test site, Smart Bay, which is located off the west coast of Ireland.
Cable installation & burial: UK - NL
In 2021, the Irish Sea Contractors team delivered all shallow water works on the installation of a telecom's submarine cable system between the UK and the Netherlands. Works included pre/post surveys, PLGR, cable lay, burial (1.5 m and 3 m ), mattress installation across cable route, and inspection and testing.
Cable installation: Portrane, Ireland & Southport UK
Irish Sea Contractors carried out cable installation and cable burial to 1.5 m depth including mattress protection where required in the Irish Sea. This included all shore-end civil works at both PLSE Portrane (8 km) and PLSE Southport (18 km). Irish Sea Contractors chartered mx Roxanne Z from Jifmar for this project.
Cable installation & burial: Killala to New York
Irish Sea Contractors delivered all shore-end civil works at Killala which included cable burial in the seabed to a depth of 1 m to 1.5 m. We chartered the mv Granuaile from the Commissioners of Irish Lights for this project. Once completed, the Transatlantic Cable Ship continued laying the cable to America.
Arklow Bank Windfarm
Irish Sea Contractors completed multiple underwater works during the construction phase of the Arklow Bank Offshore Windfarm. The team carried out work on the seven turbines, work which included grouting works, inspections, and re-routing of export cables around archaeological sites.
Fabrication, supply & installation of
continuity cable brackets
Irish Sea Contractors completed the fabrication, supply and installation of 550 x continuity cable brackets. The brackets were installed on turbines using a work class ROV. This was the first time this specific engineering task was completed without putting divers in the water on this client's offshore windfarms. Our team perfected the methodology in our subsea innovation facility using a mock tower with strong tides prevailing until the task was mastered. Because of this, our team completed the project faster than expected.
Servicing of drilling rig
Irish Sea Contractors provided 6G coded welders on board Ocean Rig's semi-submersible drilling rig, "Erik Raude". Due to the quality of the team, we were selected as the only supplier of fabricators for four years, until its retirement in 2016. Our team worked on the rig in Sierra Leone, Gambia, the Ivory Coast, South Africa, Ireland and Falkland Islands.
Offshore energy projects
Marine engineering & diving projects
Irish Sea Contractors provides diving services and marine civil engineering to both Dublin Port Company and Rosslare Europort, and has done so for over 10 years. This work has included marine construction, quay wall works, subsea concrete works, and ship maintenance. The team also recently completed the installation of 393 anodes in Greenore Port.
MV Pantanal, a 7,000-tonne heavy lift vessel, suffered severe bottom damage to its hull after dragging anchor and going ashore off the west coast of Ireland. Irish Sea Contractors first completed a detailed hull survey to GL standard, and then carried out urgent temporary repairs to enable the vessel to sail to Bremerhaven for drydocking. Our 10-man diver welding team carried out extensive plating repairs to seven holes and cuts in the hull. After 50 hours of underwater welding, the vessel was completely sealed and set sail.
In the first half of 2022, Irish Sea Contractors completed a variety of marine engineering projects. Examples of such projects include inspection and repairs of bridges in Wexford and Mayo. This involved a dive survey, multibeam survey, installation of rock bags and concrete works.
Outfall pipe works
Irish Sea Contractors has completed outfall pipe installation and inspection projects for 15+ years. Works have included inspection of outfall mark buoys, installation of 170 m HDPE pipe in Morriscastle beach in 2017, installation of 170 m HDPE outfallpipe in Kinvara in 2015, installation of 220 m HDPE pipe in Dunmore Strand in 2014, and the installation of 420 m of HDPE pipe in Morriscastle in 2013.