Ship Response Estimation Method in Multi-Directional Waves Using Real Sea Experiments

J. Ocean Eng. Technol. 1998;12(1):135-142.

실선시험기법을 이용한 다방향파중에서의 선박의 응답추정법

조효제,강일권,김종철

한국해양대학교 조선해양공학부,경상대학교 해양과학대,국방과학연구소

Keywords: Real Sea Experment, Multi-Directional Wave, Frequency Transfer Function, Following Sea

핵심용어: 실해역 실험, 다방향파, 주파수 전달함수, 추파

Abstract

In this study, the frequency transfer function of motions are predicted from the result of a full-scale seakeeping trials. Because the real sea has the characteristics of multi-directional waves,we compare the results in the one directional waves with ones in the directional waves. For calculation of the frequency transfer function in the directional waves, Takezawa's inverse estimation method was introduced and the frequency ranges were divided into three parts in order to consider following seas. The full-scale seakeeping trials was executed in the south sea of Korea using the stern trawler. Those results show that analysis method of the multi-directional waves is more reliable than that of one directional waves, and confirm the possibility of applying this method to the full-scale seakeeping trials.