The Research of the E-Navigation-Aid System on the Ship Manoeuvring Safety and Collision Avoidance in Various Hydro-meteorological Conditions

Abstract

Based on the ship collision avoidance steering system in calm water developed by authors this study plans to develop an ship collision avoidance E-navigation-aid system by considering various hydro-meteorological factors for ships with nonuniform movement A real-time simulator UMS-NCKU which is based on the 6-DOF Manoeuvring Modelling Group (MMG) model will be constructed and used for the numerical simulation of a large container ship The UMS-NCKU system is a research version real time simulator developed by the NCKU NTOU and SOIC in Taiwan To clarify the validity of the proposed manoeuvrability prediction system sea trial measured results for the large container ship were compared with the results for the manoeuvrability prediction system in terms of turn trajectory In this study a numerical technique based on Nomoto’s second-order model was employed to investigate the turning characteristics of a container ship The manoeuvring indices were obtained from numerical simulations using the Newton-Raphson method and a regression technique Both simple and complex multi-ship encounter collision avoidance cases in fast-time simulations were selected to verify the proposed E-navigation-aid system with respect to different hydro-meteorological conditions and the results were then compared with those of the ship collision avoidance steering system in calm water Moreover this E-navigation-aid system with respect to the different hydro-meteorological conditions in fast-time simulations were applied to investigate the ship manoeuvring and ship collision avoidance in following waves oblique waves and beam waves in the simple head-on condition and find the optimal collision avoidance rudder angle respectively Finally the real-time simulations of the container ship entering Kaohsiung second harbor by applying the E-navigation-aid system have been selected in this study The E-navigation-aid system developed here can quickly determine the rudder angle when the ship makes a collision avoidance manoeuvre which is helpful for the safety of ship navigation in heavy traffic areas

Date of Award	2020
Original language	English
Supervisor	Ming-Chung Fang (Supervisor)