A pilotage is one of important factors in order to keep a safety and a security of main harbors in Japan; however, pilots' marine accidents sometime happen while they work. The pilots' accidents happen well for the transfer from vessel to pilot boat on the sea, and pilots and pilots' associations do their best for reducing the accidents under International Maritime Organization (IMO) convention. In other word, a safety measure for the transfer is the important subject for pilots. The purpose of this paper is to evaluate a pilot's physical performance while their work using large model sensors (acceleration sensors), and we read characteristics of performance for the transfer. This research is first challenge to evaluate the pilots' performance in real situation.