부산대학교 도서관

When strong stress is continued, it becomes the negative thought. It is said to suffer from depression or an internal organs disease. In stress, the person may not have the recognition of the symptom. It is hard to sometimes notice an accident. In this article, I performed an attitude survey of the stress for sailors and I performed a heartbeat experiment and stress index analysis. And I compared the stress degree with the scene subjected to stress. As a result, the place where sailors were in danger was a narrow channel and a port. When the congested situation and view were small, the situation confirmed high stress. When there was the uneasiness of a collision, sailors grasped that a stress degree tended to become higher.