In the paper, wave energy spectrum and MSI will be analyzed. Evaluation will not only provide an initial feedback of passenger’s comfort in ship design stage but also estimate the suitable speed to steer the cruise comfortably. | SCIENCE & TECHNOLOGY DEVELOPMENT, Vol 18, 2015 Study of motion sickness incidence in ship motion Nguyen Anh Tuan 2 Tat-Hien Le 1,2 1 National Key Laboratory of Digital Control and System Engineering (DCSELAB), HCMUT, VNU-HCM 2 Dept. Naval Architecture & Marine System Engineering, Ho Chi Minh city University of Technology,VNU-HCM (Manuscript Received on July 13th, 2015; Manuscript Revised October 16th, 2015) ABSTRACT Motion sickness incidence index (MSI) is one of essential issues in ship motion research to access the comfort of passenger on board cruises and yachts. In the paper, wave energy spectrum and MSI will be analyzed. Evaluation will not only provide an initial feedback of passenger’s comfort in ship design stage but also estimate the suitable speed to steer the cruise comfortably. Key words: MSI, motion sickness incidence, passenger cruise, wave energy spectrum. 1. INTRODUCTION Nowadays, many prominent yacht builders research and apply the anti-rolling devices such as Beneteau, Azimut and Ferretti [1]. The cost of anti-rolling device installment contributes 10% of the cost of the luxury yacht like Azimut Flybridge 50 ft [2]. Recently, ship motion has been an essential topic in yacht design [3]. To comprehend the advantages of ship motion research, one of well-known luxury yachts, Azimut Flybridge 54 in figure 1, the roll motion is reduced up to 80% after installing antirolling device. Hence, the comfort of passengers and yacht owners plays the essential role in order to increase awareness of competition. Figure 1. Anti-rolling device installed on Azimut Flybridge 53 reduces rolling motion up to 80% [4] Trang 102 TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 18, SOÁ K7- 2015 Figure 2. The proposed process of the comfort assessment Our research focuses on a comfort of motion sickness incidence (MSI) of small passenger boats and yachts by following ISO 2631/3-1985. In addition, the well-known wave .
