The purpose of this study is to explore and present an exercise method suitable for naval vessel crews members through in-depth interviews Therefore, the following conclusions were reached. First, when working on land, the crews were conducted using the unit's physical training time, such as walking, running, strength training, and soccer according to individual intention. Second, Soccer for the unit's unity was mainly played during combat training time(Wednesday). Third, when working on land, weight experts and sports lovers such as badminton participated in a private gym or sports club after work to train their physical strength. Fourth, the purpose of physical fitness was weight control and health care. Fifth, active physical fitness was not achieved due to the lack of space and exercise facilities and equipment when working in the sea. Sixth, training satisfaction was generally satisfied, and the positive aspects were educational aspects and changes in perception. The aspects to be supplemented were the lack of practice in the small tool exercise and the need for education by naval vessel. Seventh, five small tool exercise such as TRX were applicable to the naval vessel, and in particular, satisfaction with TRX, Gym-stick, and Foam-roller was high.