Analysis of ship collision accidents in Indonesia using fault tree analysis (FTA) method

Abstract As an archipelagic country with emerging economies, maritime transportation has significantly contributed to the Indonesian economy by ensuring the fullness of domestic demand for goods and services, accelerating annually. However, with the increase in sea traffic, the probability of collision accidents may also grow, posing non-negligible risks to individuals and society in various aspects. Considering this condition, this paper assesses and evaluates past maritime collision accidents in Indonesia to observe and analyze the tendency of factors contributing to collision accidents. The analysis was conducted using the Fault Tree Analysis (FTA) method, qualitative and quantitative, on data obtained from the collision investigation report in the last 20 years. The qualitative approach is used to propose the minimal cut set, and the quantitative analysis is conducted to estimate the probability. Based on the obtained probability and the produced cut set diagram, the conclusion states that human-related factors contribute to the top even occurrence at most, implying that the human factor is the most contributing factor to collisions. Those factors include the lack of training, lack of experience, and improper decisions.