Shallow Draft, Floating Wind Turbine without Nacelle, Secured by No-Pitch Single Point Mooring

This novel turbine embraces “single point mooring”, which allows for weathervane yawing of the entire turbine structure

Technology Overview

The proposed invention embraces “single point mooring”, which allows for weather vane yawing of the entire turbine structure. The novel approach in this technique is that the mooring has a minimum number of cables and anchoring requirements with the added feature of a controlled mooring force direction. Additionally, a synthetic mooring rope is attached near the rotor axis to reduce tower strength requirements and increase stability.

This invention proposes a novel material and features which are deviations from the standard wind turbine configuration. Key elements of this wind turbine configuration include:

  • The turbine floats
  • Very shallow draft, e.g. 2m – 4m, permitting assembly at a shallow port
  • It can yaw at its mooring to face the wind, driven either by the wind or other means
  • The mooring connection consists of a single cable, or other device making the restraint force act in a defined direction
  • The restraint force from a mooring is directed to intersect the wind force and system weight at a single point. This means that changes in wind exert no pitching moments about this point and the barge/turbine assembly does not pitch under loading
  • A belt drive or rope drive costs far less than a gearbox and is overload tolerant. With this system, there would be no maintenance needs at the rotor shaft. The stainless belt offers advantages compared to other materials and configurations


  • Substantially reduced cost of hardware and structure
  • Simplified maintenance
  • Easy transport
  • Construction in sheltered, shallow ports


  • Allows construction at a shallow-water port
  • An offshore floating wind turbine for electric power generation


  • License
  • Research collaboration
  • Partnering


  • Licensing
  • Development partner
Patent Information:
For Information, Contact:
Colin Sullivan
Commercialization Consultant
Northeastern University
Andrew Myers
Jeremy Papadopoulos