실습선 새바다호의 천수역 선회운동에 관한 연구
A study on the turning-motion of T/S SAEBADA in shallow water
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초록
저자들은 이전 연구에서 어선 조종 특성(심수역)을 Kijima 경험식을 이용하여 추정한 적이 있다. Kijima 경험식 자체는 상선을 대상으로 회귀분석 되었기 때문에 어선에 적용함에 있어서 정확한 추정은 어려웠으나 대략적인 추정이 가능하였다. 따라서 이 연구에서는 실선(대상 어선)의 자료를 이용하여 Kijima경험식의 어선 적용에 대한 유효성을 검증하였고, 검증을 바탕으로 심도비(수심 대 선박 흘수와의 비)에 따른 어선 선회운동에 관한 연구를 수행하였다. 그 결과, 대상 어선은 심도비 1.5 직후부터 선회운동 특성의 급격한 변화가 발생하였다. 이러한 연구의 결과는 입출항이 잦고, 연안에서의 작업이 많은 어선 항해자들에게 지표가 될 것이다.
Abstract
The authors has predicted the maneuvering characteristics of a fishing vessel in deep water using Kijima's empirical formula in a previous study. Since the Kijima’s empirical formula was developed by a regression analysis of merchant vessels which have dimensions ( Cb, L/B, etc.) that are different from those of fishing vessels, it was possible to make a prediction approximately even with inaccurate estimation. In this study, the authors estimated the turning-motion characteristics of a model ship of fisheries training ship in shallow water based on the results of its previous study. The turning-motion characteristics of the model ship in shallow water was found out through quantitative analysis according to the water depth to ship draft ratio (H/d). In conclusion, the turning-motion characteristics of the model ship had significant changes immediately after an H/d 1.5, and this result will be helpful for sailing in shallow water.
참고문헌 (10)
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