Transition of Mental Workload Among Bridge Teammates

Koji Murai, Yuji Hayashi, Yoshiji Yano and Masaki Fuchi

Abstract:	Ship handling on leaving and entering port is always carried out by a captain, deck officers and quartermasters, and sometimes includes a pilot. For navigational watch keeping at sea, except for a narrow channel and under restricted visibility, the deck officer and the quartermaster do it. They achieve safe and efficient navigational watch keeping with their teamwork at a ship.s bridge. The importance of the teamwork has been recognized in the shipping world, and its training and education methods are also thought over. However, the evaluation of other researchers and trainers is not clear, because they are depended on the experience of the trainers who are professionals. That is not objective. Therefore, we need to make an evaluation method of the teamwork for education and training of the ship handling. In this study, we suppose that ship.s bridge teamwork is shown by the relationship with 1) the level of the mental workload and 2) the time-lag of the mental workload among teammates. This knowledge presented at our presentation of ION-AM2003(1), the last year. We challenge to evaluate teammates. mental workload at the ship.s bridge using R-R interval of subjects. heart rate variability, and we evaluate their mental workloads on leaving and entering port. The characteristics of the mental workload showed that the method using R-R interval was sufficient for the evaluation of teamwork effectiveness and efficiency.
Published in:	Proceedings of the 60th Annual Meeting of The Institute of Navigation (2004) June 7 - 9, 2004 Dayton Marriott Hotel Dayton, OH
Pages:	263 - 270
Cite this article:	Murai, Koji, Hayashi, Yuji, Yano, Yoshiji, Fuchi, Masaki, "Transition of Mental Workload Among Bridge Teammates," Proceedings of the 60th Annual Meeting of The Institute of Navigation (2004), Dayton, OH, June 2004, pp. 263-270.
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