Comparison of FEED Level Design and Performance of Chain Catenary and Synthetic Mooring Systems for a 10+ MW Floating Offshore Wind Turbine

Published: 2024

Author(s):

Jacob C. Ward
Spencer T. Hallowell
N. Kim
Anthony M. Viselli

Publication Name: Offshore Technology Conference

Publication URL: https://doi.org/10.4043/35194-MS

Research Area:

Offshore Wind & Coastal Resiliency

Keywords:

fowt, mooring system, offshore technology conference, platform, polyester, strength, synthetic mooring system, Turbine, umaine, wind turbine

Abstract:

Floating offshore wind platforms share many similarities with oil and gas platforms. However, the fundamental differences between the two floating structure applications necessitate innovative requirements and design philosophies. Using synthetic fiber ropes in intermediate- and shallow-water mooring systems is an example of innovation that increases the likelihood of widespread floating offshore wind commercialization. This study compares the FEED level design of a conventional chain catenary mooring system with an innovative semi-taut polyester mooring system for an 11+ MW floating offshore wind turbine located off Monhegan Island, Maine. The study uses site-specific metocean, geophysical, and rope test data to demonstrate the benefits of a semi-taut polyester mooring system compared to a chain catenary system.