Abstract
This study was carried out to analyze the risk attitude based on situation awareness of the Vessel Traffic Service Operator (VTSO) on the risk of collision between vessels during the monitoring of vessel traffic through the use of the VTS system. In general, when two vessels are in the close quarters situation, we analyzed the degree of risk of collision from the subjective viewpoint of the VTSOs through an administered survey. Chiefly, we analyzed the risk attitudes of each VTSO in the close quarters situation, by comparing it with the calculated value by the CoRi, which is the ship collision risk model from the VTSO's viewpoint. As a result, it was confirmed that more than 40% of the total VTSO was noted as being in a weak risk aversion type of category. Through a review of the results of analyzing the risk attitude of VTSO according to gender, age, VTS career, VTS center position, accident experience, and boarded career, it was found that there was a significant difference in the VTS career, VTS center position and accident experience. In addition, a regression model that is able to further explain the risk attitude of VTSO was derived as a factor that confirmed the significant difference and applied to CoRi to predict the collision risk according to the individual VTSO to be used as a fundamental information gathering tool for providing more accurate and safe VTS service at sea.
본 연구는 VTS 시스템을 통해 선박 통항 상황을 모니터링 중 선박 간에 발생할 수 있는 충돌 위험 상황에 대한 해상교통관제사(Vessel Traffic Service Operator: 이하 VTSO)의 상황 인식에 따른 위험 태도를 분석하고자 실시되었다. 양 선박이 서로 근접하고 있는 상황에서 VTSO들의 주관적 관점에서의 위험 정도를 설문조사를 통하여 파악하고 이를 선박 충돌 위험도 평가모델(이하 CoRi)에 의한 계산 값과 비교함으로써, 근접상황에 대한 각 VTSO의 위험 태도를 분석하였다. 그 결과, VTSO 전체의 40% 이상이 약한 위험 회피형임을 확인할 수 있었고, VTSO의 위험 태도가 성별, 연령, 근무경력, 센터직책, 사고경험, 승선경력에 따라 차이가 있는지 분석한 결과, 근무경력, 센터직책, 사고경험에 대해 유의한 차이를 확인할 수 있었다. 또한, 유의한 차이가 확인된 요인으로 VTSO의 위험 태도를 설명할 수 있는 회귀모형을 도출하였고, 이를 CoRi에 적용함으로써 VTSO 개인에 따른 충돌 위험도를 예측하여 더욱 정확하고 안전한 VTS 서비스를 제공하기 위한 기초자료로 활용하고자 한다.
