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Feasibility study for stabilising offshore wind farm service vessels by lowering their centre of gravity

Lookup NU author(s): Dr Wenxian YangORCiD



This is the authors' accepted manuscript of a conference proceedings (inc. abstract) published in its final definitive form in 2019. For re-use rights please refer to the publishers terms and conditions.


Small offshore wind farm service vessels (WFSVs), which are designed for delivering minor maintenance tasks, will be used more frequently in the future operation and maintenance of offshore wind farms. However, small WFSVs usually have insufficient seakeeping capability. Upon arriving at site, they will meet difficulty in realising the safe transfer of crew and parts between offshore wind turbines (OWTs) and WFSVs. Some methods are already developed for addressing this issue, but none of them is ideal in practical application. Therefore, a feasibility research is conducted in this paper in order to develop a new measure for stabilising small WFSVs based on the static stability theory of ships. From the experimental testing results, it is surprisingly found that it is difficult to stabilise the twin-hull WFSVs in waves by using the proposed method as the static stability theory fails to consider the overturning moment that is created by the ballast mass block when it is in flow, except that the ballast mass block has little volume or it is put down to a very deep position where waves cannot reach. However, this is not realistic.

Publication metadata

Author(s): Yang W, Chan D

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: The 4th International Conference on Offshore Renewable Energy (CORE 2019)

Year of Conference: 2019

Pages: 1-7

Print publication date: 29/08/2019

Acceptance date: 28/05/2019

Date deposited: 31/08/2019