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X – Disconnectable Turret for Renewables (DTR)

DTR

Our innovative DTR addresses one of the key challenges in the expanding floating wind industry, that of safe and efficient hook-up and tow-to-port for maintenance of floating offshore wind turbines (FOWTs)

Taking a ‘system’ approach the DTR enables safe and controlled connection, disconnection and re-connection of the FOWT.  This ‘plug and play’ philosophy reduces the Levelised Cost of Energy (LCOE) together with risks to people, equipment and the environment.

Combining the benefits of a single point mooring with that of a spread mooring, the system can be used with semi-submersibles, spars or barge with either a central or offset turbine.  The key advantages are;

  • Reduces the costs, risks and schedule connection and reconnection operations.
  • Operations potentially measured in hours as opposed to days.
  • Improves economic case for tow-to-port for upgrade/major maintenance.
  • Increase local content value (increased alongside work scope).
  • No swivels or bearings needed.
  • Minimise the mooring line handling and potentially eliminates power cable handling.
  • Potential for no break in circuit when FOWT off-station
  • No laying down of mooring lines, connectors or power cables on the seabed (suspended from DTR).
  • DTR buoy material cost comparable to traditional cable I-tube
  • Potential for quick / emergency disconnect of entire system remotely.
  • Improves offshore safety by putting people at less risk
  • Potentially reduce insurance premiums – less risk of handling damage and costly repairs

The benefits of the DTR are particularly important in deep water due to the very long mooring lines and power cables sections, which have significant overage length to be handled and present a high handling cost.

The DTR may be designed for use with many of the current FOWT configurations and most existing mooring components allowing significant LCOE reductions across the industry.

*Patent Pending