Scope of Work
Categories:
Seabed PreparationVessel ServicesSubmarine Cable DesignSubmarine Cable InstallationOnshore Cable Installation
Lifecycle Stages:
DevelopmentConstruction
Quantities:320 km submarine cable (export), 180 onshore_cables
Cable Specifications:
TypeHVDC
Purposeexport
Voltage320 kV
Source text:
around 320 kilometres of HVDC export cables for the offshore route and around 180 kilometres for the onshore route; 320kV DC XLPE offshore cable; installation involving trailing suction hopper dredger and fallpipe vessel
Contract Details
Description
DEME Group (via DEME Offshore) was contracted by Vattenfall as part of the DEME–LS Cable & System consortium to execute the HVDC export cable scope for Norfolk Vanguard, which includes the Norfolk Vanguard East site. The consortium scope covered design/engineering and installation of HVDC export cable links, including approximately 320 km of offshore route and approximately 180 km of onshore route connecting to the UK national transmission grid. The works were planned for execution in 2027–2028 and were described as involving DEME fleet assets including a cable installation vessel, a trailing suction hopper dredger and a fallpipe vessel, indicating associated seabed intervention and protection works as part of the cable installation scope.