This paper develops a risk index based on an indicator of risk assessment in terms of coastal activity location and accident type. The risk index is derived from a formula which adds the consequence of failure to a vulnerability value, then subtracts the mitigation value. Specifically, the consequence of failure is the number of casualties in coastal activity locations. An indicator of vulnerability refers to coastal environment elements and social elements. A pointer of mitigation includes managerial and organizational elements that indicate the capabilities of coastal activities. A risk rating of coastal activity location is found from a risk matrix consisting of the accident location and type. The purpose of this study is to prevent accidents at coastal activity locations by allowing the Coastal police guard to monitor effectively and inform visitors of potential risks.

1. Introduction
2. Previous study
3. Risk assessment
    3.1 Risk index model
    3.2 Risk rating
4. Application of risk assessment
    4.1 Selection factor for accident location and type
    4.2 Calculating factor values with the risk model
    4.3 Calculating the risk index of the accident locationand type
    4.4 Risk rating for the Malipo location in Taean
    4.5 Utilization of Risk rating and risk index
5. Conclusion
References

• Young-Jai Lee(Department of Management Information System, Dongguk University)
• Cho-Young Jung(Division of Marine Industry Transportation Science and Technology, Kunsan National University)
• Ja-Yeong Gu(Southern Regional Coast Guard) Corresponding Author