Hydrodynamic Forces between Vessels and Safe Maneuvering under Wind-Effect in Confined Waters

• 발행기관: 한국항해항만학회
• 저자명: 이춘기(Chun-Ki Lee) 윤점동(Jeom-Dong Yoon)
• 간행물 정보: 『한국항해항만학회 학술대회논문집』2007 춘계공동학술대회논문집(제1권), 15~20쪽, 전체 6쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2007.04.30

영문 초록

It is well known that the ship maneuvering motion is greatly affected by hydrodynamic forces and moments acting between two ships passing too close to each other in confined waters, such as in a harbor or narrow channel. This hydrodynamic forces and moments can be assumed to be the functions of the longitudinal and transverse distance along with their speeds. The aim of the present research is to develop a guideline of ship velocity and safe distance between ships to avoid the influence of the hydrodynamic forces and moments and to navigate ships safely in confined waters. From the perspective of marine safety, considering the interaction and wind effect as a parameter, an overtaking and overtaken vessel navigating too close to each other under the condition of wind direction from 80° to 150° should be cautioned with high alert, regardless of ship types. Also, regardless of the ship-velocity ratio and ship types, ered safely without deviating from the original course under the following conditions; the transverse distance between two vessels is approximately kept at 1.0 times of ship length and 5 through 10 degrees of range in maximum rudder angle.

목차

ABSTRACT

1. Introduction

2. Coordinate system

3. Prediction of hydrodynamic forces between two vessels

4. Results and discussion

5. Conclusions

References

키워드

Ship Maneuvering Motion Safe Navigation Hydrodynamic Force Longitudinal and Transverse Dí stance Confined Waters Wind Effect Control Gain Constants