Offshore Cable Installation

November 2010John Davies

Global Marine Systems Limited

Services and Markets - Overview

Turnkey submarine cable systems

Network planning and design

Subsea route planning and survey

Permitting & Offshore Liaison

Cable joint development

Charting

Subsea technology training

and engineering

Decommissioning support and assets to

for the Subsea removal of seabed

infrastructure.

Trenching Services and Plough assets for

both installation and reburial.

Submarine telecommunications cable

installation & maintenance

Subsea power cable installation &

maintenance

Cable storage and logistics

ROV and plough services,

Equipment leasing

Undersea research equipment

installation & maintenance

Oil and Gas Support – Services to

complement IRM and Installation / Repair /

Removal of SURF components.

Both directly and through our Partnerships & Joint Ventures, we offer a wide range of services in several markets

Mission Statement

To be the first choice provider of global offshore marine

engineering services, recognised by our customers for our

commitment to quality in everything we deliver.

4Cable tank in C.S. Great Eastern

Source: Smithsonian Institution Libraries

Together lets learn from experience

We have been installing power cable in offshore wind since UK Round 1

Offshore wind may be relatively new, but we have been installing cable under the sea for well over 160 years

Many of the processes and project management issues are similar in both Telecommunications & Offshore Power

C.S. Great Eastern:1866

Energy - Overview

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We are the market leader for the cabling element of offshore wind farms, comprising the inter-turbine connection cables & export cables to shore.

Major new entry into growing Offshore Wind Farm market.

One of the only contractors in the world with significant experience in this market.

Wind Farms are seen as crucial to meeting the power needs of the UK & Europe.

Building latest generation of marine engineering, jobs and power infrastructure here in UK.

Our area of expertise is in the project design, installation, burial and eventual maintenance of array cables, export cables and inter-connectors.

An Explanation

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Interconnectors are those systems

that join countries.

Eg. Britned – Britain to Netherlands.

Array Cable

Export Cable

Image source: BWEA

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In short, we bury cable: our vessels & equipment are somewhat different than what you normally see in offshore wind photos

Global Marine Systems: Subsea Power Cable Installation Specialists

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Our area of expertise is in project design, installation, burial and maintenance of inter-field cables, export cables and inter-connectors.

At the forefront of the alternative energy market for several years, specifically offshore wind

Experience at many of the world’s largest offshore projects

Alpha Ventus

Kentish Flats

Horns Rev

Horns Rev 2

Sheringham Shoal

Beatrice

Gunfleet Sands

BritNed

Nord Eon 1

StatoilHydro Gjoa

Barrow

London Array

Q7

OWEZ

Energy – Projects complete

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Horns RevInstallation and burial of 80 in-field cables on one of the largest offshore wind farms.

Kentish Flats

One of the first major offshore wind farms operating in the UK, providing power from the Thames Estuary to the coast in Kent. Global Marine Systems installed and buried 3 export cables and 27 inter-array cables.

Beatrice Wind Farm

The installation and burial of the cables connecting the world’s first two offshore 5MW turbines and the Beatrice Alpha production platform.

EstLink

A HVDC inter-connector link between Estonia and Finland comprising of some 77 kilometres of bundled power cable, installed and buried by the CS Sovereign.

Barrow Wind Farm

Remedial work carried out on the inter-array cables using the CS Sovereign and the Atlas 1 trencher ROV.

OWEZ Wind Farm

Reburial of the export cables and the inter-array cables using the CS Sovereign and the Atlas 1 trencher ROV.

Horns Rev 2

Successfully completed the installation and burial of all the 91 inter-array cables using two cable lay barges namely the Pontra Maris and the Stemat 82.

Energy – Projects under construction

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NordE. ON1The installation and burial of the 110kms HVCD wind farm export cable in Germany using the Team Oman to install the cable and the Excalibur trenching system for post lay burial. Completion is due in Art 2010.

BritNedThe power inter-connector cable between the UK and The Netherlands is currently being installed by Global Marine Systems Energy. Utilising the Team Oman and the North Ocean 102 to install the bundled HVDC system. The cable is being buried by the Excalibur trenching system. Completion is due early Q3 2010.

StatoilHydro GjøaA HVAC system form the Norwegian mainland to the Gjoa floating production platform. The North Ocean 102 has completed an extensive mobilisation programme and will lay the cable in Q1/Q2 2010.

London ArraySigned 4th Feb 2010. Global Marine has been chosen to install the 175 inter-array cables of the world’s largest and most prestigious offshore wind farm project to date. Due to the range of water depths we shall be utilising cable installation barges and DP2 installation vessels for this work . The work is due to start in July 2011 and will be completed by July 2012

We run a ROV Training School, operate a state of the art cable depot and operate our subsea equipment from our Portland, Dorset, UK base.

Portland UK Marine Base

Cable Tank House

Portland Subsea Training School

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Port Facilities – Horns Rev 2

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Port Facilities – Horns Rev 2 Cable Storage

85 Turbines, london Array 175 and West of Isle of Wight similar amount

2 Campaigns storing 40 at a time on shore – 30T ea @ 650 metres

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Port Facilities – Horns Rev 2

Additional items – J tube extension pieces, mattresses, equipment / Ploughs / Trenchers

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Port Facilities – Operations HR2

2 Barges plus 2 AHT ea Oil Express CS Sovereign 1 x Windcats 1 x crew transfer cutter 200 people at any one time

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Inter Array Installation

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Port Facilities – Supply Chain

Complete Logistics Support on Site – offices, freight forwarding, stevedore, canteen, craneage, tugs, transportation, storage, bunkering, berths,agents, field control office.

Wider Business Cluster –welding, hydraulics, machining, fabrication, electricians, consumables, chandlers, personnel, training, transport (cars, buses, train)

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Thank You