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:	Refereed Article
Keywords:	high-speed catamaran, motions, motion sickness incidence, ride control
Research Division:	Engineering
Research Group:	Mechanical engineering
Research Field:	Mechanical engineering not elsewhere classified
Objective Division:	Transport
Objective Group:	Water transport
Objective Field:	International passenger water transport (e.g. passenger ships)
UTAS Author:	Lau, C-Y (Mr Chun Yu Lau)
UTAS Author:	Ali-Lavroff, J (Dr Jason Ali-Lavroff)
UTAS Author:	Holloway, DS (Associate Professor Damien Holloway)
UTAS Author:	Shabani, B (Dr Babak Shabani)
UTAS Author:	Mehr, JA (Dr Javad Mehr)
ID Code:	149103
Year Published:	2022
Funding Support:	Australian Research Council (LP170100555)
Deposited By:	Engineering
Deposited On:	2022-03-08
Last Modified:	2022-04-08
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