Open AccessCharacteristics of Turning Circle and Zig-Zag Manoeuvres of An Indonesian Ferry Ship In Shallow Water
Author(s) -
Andi Haris Muhammad,
Daeng Paroka,
Sunarti Abd Rahman,
Mohammad Rizal Firmansyah,
T P Putra
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1052/1/012036
Subject(s) - waves and shallow water , heading (navigation) , marine engineering , turning radius , deep water , trajectory , course (navigation) , overshoot (microwave communication) , geology , engineering , geodesy , oceanography , telecommunications , mechanical engineering , aerospace engineering , physics , astronomy
Ship manoeuvring performance is very important in navigation safety, especially when ships operate in shallow water. This paper describes the characteristics of turning circle and zig-zag manoeuvres of Indonesian ferry ships in shallow water. A time-domain simulation program was developed for this purpose. Several parameters such as ship speed and water depth levels have been considered in the simulation. The results shows a significant difference in the ship’s trajectory and speed when the ship manoeuvring in different water depths. The ship manoeuvre trajectory diameter for shallow water ( h/T =1.3) is greater than in deep water ( h/T =4.0). Meanwhile, the speed of the ship during turns increases with the decreasing depth of the water ( h ). Likewise, the 20/20° zig-zag manoeuvre of the ship shows that the heading angle in shallow waters has a smaller overshoot angle when compared to the ship manoeuvres in the deep waters.