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Mental workload is useful to evaluate the performance of ship bridge teammates: a captain, a duty officer, a helmsman, and a pilot. The physiological indices, heart rate variability (R-R interval), salivary amylase and facial (nasal) temperature, are good indices for ship handling. It evaluated for seafarers on both of simulator and real ship. Meanwhile, the response is also lead the skills of a navigator-the point of judgment for avoiding a target and controlling an own ship course and speed. This paper proposes that physiological index leads skill points for ship handling.