Project History

SeaGen Manufacture

SeaGen S components were manufactured across the UK and Europe. The most fundamental systems were rigorously tested close to MCT’s offices in Bristol.

In 2007, all of the components required to construct SeaGen S were delivered to Harland and Wolff’s facility in Belfast for final assembly and testing. This location was also used as the installation hub for the project.

SeaGen cross arm

The SeaGen S with crossarm fitted at Harland and Wolff, Belfast.

Site Preparation

In 2008 as part of the installation of SeaGen S, a 450m long duct was drilled using horizontal directional drilling. This duct is 20m below the seabed and protects the cable from damage from anchor drag for example. An 11kV power cable was subsequently pulled through the duct and connected to the SeaGen S device. This enabled connection to the existing electricity grid infrastructure located onshore, south of Strangford Lough.

SeaGen Installation

The foundation for SeaGen S was installed by Fugro Seacore. The structure is a quadropod with four piles drilled and grouted into the seabed.

To install SeaGen S, the device superstructure (which comprised of the quadropod and the monopole) was positioned on location using the crane barge Rambiz. A work platform was then attached to the superstructure. From the work platform, using the quadropod as a guide, Fugro Seacore drilled four piles into the seabed which were then grouted to secure SeaGen S in place.

Crane Barge

Crane Barge Rambiz arriving in Strangford Lough on 31 March 2008 to commence the installation of SeaGen S.

Installation was completed in June 2008 and SeaGen S first generated electricity in July 2008. Between June and December 2008, SeaGen S underwent rigorous testing as part of the commissioning process. In December SeaGen S operated at full capacity for the first time.