Moray East GBS

Project description

The Gravity Base Structure (GBS) c/w Meteorological Mast was installed in the Eastern Development Area in Summer 2014 for Moray East OWF.

The integrity of the mast lattice structure was compromised during installation and as a result, requires to be decommissioned at the earliest feasible opportunity. Given the weight, size (33.5m x 32.5m x 16.0m) and position of the structure, a full assessment was required to determine the options for decommissioning. Considerable stakeholder engagement was required to identify suitable reception facilities and enabling assets to transport the structure.

Key facts

Client: C-Ventus
Location: UKCS
Water Depth: 40m
Dates: Q1-Q2 2021
Project Reference: P0475

Moray East Picture 4
Moray East GBS map

Package Management

Business Assurance

Carbon Management

Energy Transition

Engineering Design & Analysis

Marshalling, TransportInstallation & Field Support

Floating Sytems, Floating,Mooring & Hook up

Visualisation & Digitalisation

Our scope

  • Stakeholder engagement with port facilities and waste management contractors across the UK & Northern Europe.
  • Assessment of refloat and tow options, identifying key enabling vessels and equipment required to facilitate operations.
  • Investigation of potential load-in and dismantling / disposal options.
  • Determination of permit requirements & timescales to be identified.
  • Methodology and port assessment based on PESTLE analysis.
Moray East Picture 3
Moray Easy Picture 1 - Copy


  • Methodology for refloat and tow
  • Identification of enabling assets and equipment
  • Assessment of UK & European ports based on load-in capabilities
  • Timeline on permits, licences, authorisations and consents.
  • Stakeholder management plan
  • Investigation of load-in & dismantling / disposal options
  • Short list of recovery port facilities