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Influence of an active T-foil on motions and passenger comfort of a large high‑speed wave‑piercing catamaran based on sea trials

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Lau, C, Ali-Lavroff, J ORCID: 0000-0001-5262-8666, Holloway, DS ORCID: 0000-0001-9537-2744, Shabani, B ORCID: 0000-0002-2910-962X, Mehr, J ORCID: 0000-0002-9157-3343 and Thomas, G 2022 , 'Influence of an active T-foil on motions and passenger comfort of a large high‑speed wave‑piercing catamaran based on sea trials' , Journal of Marine Science and Technology , pp. 1-17 , doi: 10.1007/s00773-022-00876-8.

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Abstract

T-foil and stern tabs were installed on a wave-piercing catamaran (Incat Tasmania Hull 061) to improve ship motions and passenger comfort. More than 40 total effective hours of sea trials were conducted by the US Navy in 2004, encountering sea states 4-5 in the Atlantic Ocean near the United Kingdom. In this paper the influence of a ride-control system (RCS) on the heave and pitch response amplitude operator (RAO) of the full-scale high-speed catamaran was investigated using the sea trial data. The reduction in motion sickness incidence (MSI) was estimated in order to examine the effectiveness of the RCS in improving passenger comfort. With the existing control algorithm, the vertical accelerations were found to be best controlled by the active T-foil working together with the active stern tabs, while the pitch RAO was mainly mitigated by deploying only the stern tabs. About a 23% reduction was observed in the peak heave RAO with deployment of an active T-foil. The MSI can be reduced by up to 23% with respect to the cases with stern tabs only, depending on the encountered wave conditions, based on ISO recommendation for MSI calculation of a 2-h seaway passage.

Item Type: Article
Authors/Creators:Lau, C and Ali-Lavroff, J and Holloway, DS and Shabani, B and Mehr, J and Thomas, G
Keywords: wave-piercing catamaran, ride-control system, T-foil, motion sickness incidence, full-scale sea trial
Journal or Publication Title: Journal of Marine Science and Technology
Publisher: Springer
ISSN: 1437-8213
DOI / ID Number: 10.1007/s00773-022-00876-8
Copyright Information:

© The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) License, (https://creativecommons.org/licenses/by/4.0/) which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

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