Seabed Preparation for Wind Farms (Boulder Clearance)

What we are looking for:
We are looking for companies who need the services of our fleet of vessels and specialist underwater ROVs to survey the seabed, clear boulders and relocate them, and help to create paths for cable laying for wind turbines.

What we offer:
Fletcher specialise in sea-bed preparation including survey and boulder clearance for wind farms.

Why Choose Fletcher?


• Own and operate 8 low-cost Dynamically Positioned supply vessels and have created their own ROV technology (The Zodiac TT)
• No middleman sub-contractor means no extra fees
• Operating the specialist Zodiac TT ROV off the side of low cost supply vessels as opposed to expensive dive and ROV vessels


• Having their own vessels means they are ready to mobilise straight away
• The Zodiac TT ROV performs a huge number of tasks associated with sea bed preparation for wind farms

• Zodiac TT ROV uses a grab, to clear the seabed as opposed to dredging up important marine life

The Fletcher Vessel Fleet have operated in the harsh conditions of the North Sea for over 10 years and have a strong reputation for safety and reliability.
They own and operate 8 Platform Supply Vessels, which have all been designed and built in Norway. They all have excellent station keeping characteristic and a large deck area providing a stable working platform.

The Fletcher brand has grown and diversified, so that 20% of all business is now in renewables. Working successfully to clear boulders for wind turbine cables in the English Channel, Fletcher realized efficiencies could be made, so with an expanded technical team have create the Zodiac TT ROV System:

The Zodiac TT is different from a conventional ROV because it hangs on a lift cable and a 15 tonne SWL active heave compensated winch. This allows it to do a range of tasks not currently capable from a single piece of equipment and vessel. The Zodiac is a game changing design and a major step change in efficiency for the offshore renewables industry, it can be put to work doing:

• More Efficient Survey
o Seabed preparation and de-risking
o Simultaneous bathemetric and sub-bottom,
o As Built
o Depth of Burial
o Cable location

• Better Seabed Clearance which is Kinder to Marine Life
o Boulder removal and relocation
o Sea-bed dredging and mass flow excavator
o UXO intervention and disposal

• Installation and Recovery
o With mattress installation, recovery, cable recovery and repair

Fletcher’s new era as an all-energy marine service company has been firmly established and with such a unique low-cost offering, continues to go from strength to strength.

  • offshore
Collaboration sought:
  • Subcontract/outsourcing activity


Mr Mike Porter
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