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Description: Department of Transport - An Roinn Iompair    

Corrib Gas Field Annual Pipeline & Umbilical Inspection and Subsea Facilities Maintenance and Inspection

Corrib offshore gas pipeline and umbilical route:


Marine Notice No. 15 of 2016


Notice to all Shipowners, Fishing Vessel Owners, Agents, Shipmasters, Skippers, Fishermen, Yachtsmen and Seafarers



The Department of Transport, Tourism and Sport has been advised by Shell E & P Ireland Ltd of the annual pipeline and umbilical survey that will be undertaken at the Corrib field location and along the pipeline corridor to the landfall at Broadhaven Bay. There will also be a programme of maintenance and inspection conducted on the subsea facilities.


Phase 1 – Subsea Facilities Maintenance and Inspection

This work will all take place within the 500m Safety Zone (refer to Corrib Safety Zone map) and will involve carrying out a programme of maintenance to investigate and repair some of the subsea facilities as required.


Phase 2 - Pipeline and Umbilical Inspection

This will be undertaken from 54°20.34’N, 011°03.51’W (Corrib Offshore Field Location) to 54° 17.00’N, 009° 49.24’ W (landfall). The area of activity stretches along the route of the existing Corrib offshore gas pipeline and umbilical route (refer to map below). The pipeline and umbilical surveys will be separate activities. The work involves acoustic and visual survey of the pipeline and umbilical.


The Phase 1 work will commence in mid April 2016 and is expected to be completed by end April. The Phase 2 work will commence upon completion of Phase 1 and is expected to be completed by end May 2016.


The Olympic Ares (Callsign C6AW7), will undertake the deep water surveys and the subsea facilities maintenance and inspection. All equipment used will be vessel and/or ROV (Remotely Operated Vehicle) mounted.


The vessel will be listening on VHF CH 16 throughout the project.


All mariners are reminded of their responsibilities under the International Collision Regulations and are reminded of Marine Notice No. 17 of 2007, which gives general advice in relation to the activities of vessels engaged in survey work for hydrographic, seismic, fishing research and underwater operations.




The International Regulations for Prevention of Collisions at Sea (COLREGS) are implemented in Irish law by the Merchant Shipping (Collision Regulations) (Ships and Water Craft on the Water) Order 2012 [S.I. No. 507 of 2012], and the Signals of Distress (Ships) Rules 2012 [S.I. No.170 of 2012], see Marine Notice No. 06 of 2013. These Statutory Instruments may be purchased by mail order from Government Publications, Office of Public Works, 52 St. Stephen’s Green, Dublin 2 D02 DR67.  Tel: (01) 6476834/1890-213434 and are also available online at:




Corrib Safety Zone map:





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