Ocean Systems Engineering

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Feasibility study for wrap-buoy assisted wet-tow and stepwise installation of mono-bucket foundation for 15 MW offshore wind turbine

  • Ikjae, Lee (Department of Ocean Engineering, Texas A&M University) ;
  • Moohyun, Kim (Department of Ocean Engineering, Texas A&M University)
  • Received : 2022.09.08
  • Accepted : 2022.12.05
  • Published : 2022.12.25
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Abstract

An innovative concept for wet-transportation and stepwise installation of mono-bucket foundation for 15 MW offshore wind turbine is proposed. Case studies for two different mono-bucket and wrap-buoy dimensions are conducted and their hydrostatic and hydrodynamic performances are compared for both wet-towing and lowering operations. The intact stability and transient responses are analyzed in detail for various stages of lowering operation. Wave-induced motion statistics during wet tow in sea state 4 (highest operational window) are checked. The proposed concept is found to be feasible and can be an alternative cost-effective solution without using heavy-lift crane vessel in practice.

Keywords

Acknowledgement

This research was financially supported by US-DOE NYSERDA (contract #106) NOWRDC program.

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