Forth and Tay members

23 Degrees Renewables Ltd

Business type: Marine

Contact: Ed Woodrow, Project Manager / Business Development
Address: Sub Depot, Inchmarlo AB314AP
Email:
Countries worked in: United Kingdom

23 Degrees Renewables (www.23degreesrenewables.co.uk) is a nearshore and onshore cable installation contractor and marine consultancy company, specialising in HVDC / HVAC and telecom submarine cable projects across the range of industry sectors including power transmission, renewable energy and telecoms. We have successfully completed 13 shore end installations in the past 18 months providing a range of services including:

• Shore end cable installation
• Topographic and hydrographic surveys pre and post installation
• Burial, protection and remedial works including scour protection, mattressing, split pipe protection
• Provision of vessels, specialised equipment and skilled personnel
• Cable recycling and recovery
• Cable transportation
• Cable Storage, including strategic spares
• Diving & ROV operations
• Shallow Water dredging operations.
• Marine Civil Engineering
• Ground works
• Marine Mammal Observation (MMO)

Capabilities

Established supplier with significant experience supplying the sector

OPEX - Operations & Maintenance: Export & Array cable Surveys & Repairs

Good capacity and some experience in supplying the sector

CAPEX - Balance of Plant - Manufacture / Supply Services: Cable Protection
CAPEX - Balance of Plant - Manufacture / Supply Services: Salvage & Recycling / Waste Management
CAPEX - Balance of Plant - Manufacture / Supply Services: Offshore Labour Services
OPEX - Operations & Maintenance: Storage of Strategic Spares/Lay Down Areas

Capabilities to supply, but no/limited experience in the sector

Pre-Construction Development Phase (DEVEX): Seabed Bethnic Surveys
Pre-Construction Development Phase (DEVEX): Geophysical Surveys
Pre-Construction Development Phase (DEVEX): Geotech Surveys
Pre-Construction Development Phase (DEVEX): Marine Mammals Surveys
Pre-Construction Development Phase (DEVEX): Survey Vessels
Pre-Construction Development Phase (DEVEX): Onshore Surveys
Pre-Construction Development Phase (DEVEX): Access Vessels
Pre-Construction Development Phase (DEVEX): UXO Management
DEVEX - Project Management & QA Services: Project Management & Programme Management
CAPEX - Turbine Services: Shoreside Lifting Services
CAPEX - Balance of Plant - Manufacture / Supply Services: Export & Array cables & components
CAPEX - Balance of Plant - Manufacture / Supply Services: Scour Protection
CAPEX - Balance of Plant - Manufacture / Supply Services: Back Up Generators & Fuel Supply
CAPEX - Balance of Plant - Manufacture / Supply Services: Accommodation & Transport Services
CAPEX - Balance of Plant - Manufacture / Supply Services: Offshore Equipment Services
CAPEX - Balance of Plant - Manufacture / Supply Services: Vessels or Vessel Equipment Provision
OPEX - Operations & Maintenance: Workboats & Helicopter services
OPEX - Operations & Maintenance: Scour & Structural Surveys & Repairs
Decommissioning: Decommissioning

Ambitions to diversify in the sector

CAPEX - Balance of Plant - Manufacture / Supply Services: Port facilities for Construction Support Vessels including Cable Lay vessels

Case studies

Wind Float Atlantic 23 Degrees were contracted over the summer 2019 to provide support for the export cable installation. 23 Degrees provided a range of services including engineering support and procedure review, followed by an operational site team to manage and undertake the shore end pull in scope of work. The shore end pull in operations consisted of assistance with mobilisation and setup of site equipment, HSEQ control of the shore end site, management of the pull in operation and supply of personnel and cable handling equipment. Difficulties were faced due to the compact nature of the shore landing compound, however, these challenges were overcome by strong collaborative working between all parties.

Contract type: NEC

Value: £200,000

23 Degrees provided personnel, equipment and onsite management to undertake the shore end power cable pull in operation.

Shetland Shore End Installation 23 Degrees were contracted to undertake the shore end pull in operation for 6 power cables between the Shetland Islands. Two cables were installed between Yell and Unst (the most northerly inhabited island in the British Isles), and one between mainland Shetland and Yell. The six shore end locations were prepared simultaneously. Local environmental difficulties were faced including wet and boggy terrain, high tidal flows between islands, and extreme weather, however, these difficulties were overcome and all shore landings were completed on time and on budget. The remote location of the shore landings also posed significant challenges with locations up to 2.5km from the nearest access road, leading to a range of 23 Degrees’ off-road vehicles being utilised including quad bikes, Argo cats and tracked dump trucks. 23 Degrees mobilised a range of equipment including 4 x RHIBs, 2 x workboats, 2 x tracked winches, 6 x excavators, supported by nine 23 Degrees personnel and local contractors.