Scotland to Northern Ireland Pipeline: Subsea Rock Installation, December 2021

Mariners are advised that remediation works are due to be carried out on part of the Scotland to Northern Ireland Pipeline in December 2021.  A Notice to Mariners describing the work can be downloaded here and is summarised below.

Timing and Location

Rock placement work is due to be carried out approximately 1.6 nautical miles off the coast of Scotland.  The purpose of this rock placement is to remove pipeline freespans within two seabed depressions in this area.  The precise location of this work is:-

  • 54º 59′ 29.04″N 005º 13′ 12.51″W (alternatively 54º 59.484’N 005º 13.208’W)

This work is due to commence on the 11th December 2021.  It is expected to last for no more than 24 hours, weather permitting.

A map showing the rock placement location is provided in the Notice to Mariners that can be downloaded here .

Vessel details

This work is due to be carried out using the flexible fallpipe vessel Stornes.  Details of the vessel involved in these operations, along with its present location can be found on via the links below:-

  • Stornes: Rock placement vessel | Call sign PCKX

The vessel will be monitoring VHF Channel 16 throughout the operations.

The vessel involved in this work will be restricted in its ability to manoeuvre and other vessels are reminded to pass at a safe speed and distance (500m). 

Please contact Stephen Hemphill at Mutual Energy ( (DD +44 (0) 28 9043 7583, M +44 (0) 7779 724645) if you have any queries about this work.

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