Gunfleet Sands Windfarm

Case Study Overview

R7M won the contract to perform various marine operations on the Gunfleet Sands.

Windfarm including recovery of seabed obstructions, various lifting operations and installation of all “J-Tubes” on the windfarm.

At a glance

  • Date: November 2008-June 2009
  • Programme Duration: 7 months
  • Project Number: 2008
  • Value: £1.45m
  • Client: DONG Energy
  • Principal Contractor: M.T. Hojgaard
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The Solution

R7M performed operations from various vessels however the hub of all operations was R7M’s flat top barge the Haven Seaforth which had a 50 tonne hydraulic crawler crane, various dive spreads, and a 75 tonne knuckle boom crane housed on deck.

The barge was utilised for a variety of tasks however Haven Seaforths primary role was the installation of J-Tube into the wind turbines foundations and seabed debris clearances.

The project is a good example of the diversity “one stop shop” approach that R7M has come to pride itself on with the entire operation occurring from internally within the company. This included all of the required plant to perform the tasks and all of the specialist expertise and experience to ensure that the project was completed in a safe efficient manner.

Gunfleet Sands Windfarm
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“I wanted to share the excellent feedback on the piling works for Barrier Gardens Pier. A success all round project in terms of task at hand, depth, timing, budget, comms and health and safety.  We’d be happy to work with the Red7Marine team again and I shall be in touch as soon as something comes up. Please pass on our thanks to the team for making the project a success.”

Richard Hopperton, Head of Procurement Port of London Authority