KCS 조종성능에 미치는 횡경사 영향에 대한 연구

Abstract

It can be anticipated that a ship’s hydrodynamic characteristics is changed according to heel angle. Furthermore, it can also be anticipated that a ship’s manoeuvrability is changed according to change in hydrodynamic characteristics. Generally, the effect of heel on a ship’s manoeuvrability has been dealt with [3+1] degrees of freedom (DOF) (3-DOF manoeuvring + 1-DOF roll) equations of motion. However, if heel angle becomes large, the conventional equations of motion arenot enough to simulate a ship’s manoeuvring characteristics. In this paper, change of hydrodynamic characteristics by heel angle of a ship is studied through captive model tests. A 1/42 model KCS was used for the captive model tests. Through the analysis of the model tests results, modified equations of motion in the view point of manoeuvrability are presented to deal with the effect of heel. By a number of numerical simulations, changes of turning and zigzag characteristics according to heel angles are suggested.