In order to revitalize the marine leisure industry, researches on various leisure vessels have been widely conducted in Korea. In particular, in the field of leisure sports, researches and developments for improving the performance of high-speed motorboats are actively progressing. For reducing the weight of motorboats various composite materials are applied to the hull, and these composite materials must ensure structural safety. In this study, the material properties of composite materials applied to tunnel-type motorboats, used in the OSY(Outboard Stock Yamato)-400 race, were evaluated and the structural analysis was performed to examine the safety of the motorboat hull. Material tests were conducted according to Korean Industrial Standard and structural analysis of finite elements model of the motorboat hull was performed under longitudinal bending and torsional load conditions, respectively. By comparing the analysis results with the material test results, it was confirmed that the applied composite material meets the required strength.

Abstract
1. 서론
2. 모 터보트 선체의 구성
3. 재료 특성 평가
    3.1 적층 복합재료 특성 평가 방법
    3.2 적층 복합재료 특성 평가 결과
4. 모 터보트 선체 구조 해석
    4.1 모 터보트 구성 재료 특성
    4.2 하중 조건 및 경계 조건
    4.3 선체 구조 해석 결과
5. 결론
후기
References

• 류현수(Dept. of Smart Ocean Mobility Engineering, Changwon National University) | Hyun-Su Ryu Corresponding author