Procedure for calculation of stopping distance and time of ships and pushed convoys

Abstract

Movement of ship or pushed convoy is realized under the influence of the propelling force, which is created by propeller or other types of propelling devices. After the change of work regime of the propelling engine the speed of ship (or pushed convoy) changes according to certain rules, while at the same time ship (pushed convoy) obtains irregular movement. Traveled distance and time lapsed of a certain maneuver, which take time during this irregular movement are called inertial characteristics of ship (or pushed convoy). These characteristics mostly depend on the type of maneuver, influence of external conditions, depth of waterway, as well as the amount of loaded cargo. In this paper the method for calculation of stopping distance and time will be presented for pushed convoys while navigating on a waterway both wide and deep enough. This paper is based on research done on the following projects: • Models of integration of transport system, number 36024 for the period 2011÷2014 year, by the Ministry of education, sciences and technical development of the Republic of Serbia; • Models of sustainable development of traffic in Vojvodina, for the period 2011÷2014 year, by the Secretariat of sciences and technical development of the Government of Vojvodina.

Keywords

• pushed convoy
• waterway
• inertial characteristics
• stopping time
• stopping distance