Subsea Cables

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Caithness - Moray HVDC Link - Cable Laying

Cable Laying

ABB will undertake cable laying and a simultaneous ROV survey of the as-laid cables during May, June and July 2017 using the CLV Victoria call sign: LAWV7 The Cable will be laid in 2 campaigns

Campaign 1 from Noss Head to approx.  58°06.416'N 002° 35.737'W where the cable end will be wet stored.

Campaign 2  from Portgordon to approx. 58°06.416'N 002° 35.737'W where the cable end will also be wet stored prior to omega jointing being carried out.

In nearshore waters at Noss Head the cables will be attached to an onshore winch wire and pulled through the pre-installed ducts.

At Portgordon, with assistance from 4 work boats, zodiacs and divers the cables will be floated in with the aid of flotation bags, attached to an onshore winch wire and pulled through the pre-installed ducts. Once the cables are anchored on shore the CLV Victoria will commence laying operations. Once both cables have been laid the ends will be lifted to deck and jointing operations will be carried out and the resulting omega joint laid down on the seabed. Until further notice 5 guard vessels will patrol along the cable route.

There is a working area 250m either side of the cable route centreline coordinates given by the route position list above and other seafarers are requested to keep clear during these operations.

During the period 17 April to 31 May 2017 ABB will carry out diving operations in the  following area:

58°27.841'N 003°03.012'W

58°27.773'N 003°02.823'W

58°27.810'N 003°02.767'W

58°27.885'N 003°02.925'W

Vessel: MV eal Shuna

 Trenching Operations

The Caithness - Moray HVDC Link will be a twin bundled High Voltage DC interconnector (single cable diameter 132mm) installed by ABB HVC for Scottish Hydro Electric Transmission (SHE T) stretching approximately 113 km across the Moray Firth from Portgordon in Moray to Noss Head in Caithness.

Trenching Operations from 20/03/17 and 30/06/2017

Between: 57°39.807'N 003°01.903'W  -  58°28.800'N 003°03.314'W 

Vessel:  Siem Ruby   MV C-Odyssey   Remote Sensor   Marine Sensor


For further information: Richard Creed, ABB Tel: +44 7802 225532  email:


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