Authors: Yuanqiang Zhang; Guoyou Shi; Hu Liu; Weifeng Li
Addresses: Key Laboratory of Navigation Safety Guarantee of Liaoning Province, Navigation College, Dalian Maritime University, China; College of Maritime and Transportation, Ningbo University, Navigation Building, Meishan Campus, Ningbo 315000, China ' Navigation College, Dalian Maritime University, China ' Zhejing Ocean University, No. 1 Haida South Road, Changshi Island, Lincheng Xinqu, Zhoushan City, Zhejiang Province, China ' Key Laboratory of Navigation Safety Guarantee of Liaoning Province and Collaborative Innovation Research Institute of Autonomous Ship, Navigation College, Dalian Maritime University, Room 313, Navigation Building, Dalian, China; Department of Civil and Environmental Engineering, University of Maryland, Maryland, USA
Abstract: To solve the problem of ship collision avoidance in restricted waters, a method is proposed, in this paper, for obtaining the time to the closest point of approach (TCPA), the distance to the closest point of approach (DCPA) and the meeting position considering multileg route, the proposed method considers the turning position and turning time of the ship. For ships with a collision risk, a safe speed can be obtained by setting a new meeting position. The safe speed considers the time elapsed for altering speed. At the end, the proposed method is used to get the collision risk and avoidance measures for three different encounter situations. A navigation simulator is used to verify the avoidance measures. The experimental results show that the proposed algorithm can obtain more accurate results than the existing algorithms.
Keywords: restricted waters; waters intersection; TCPA; DCPA; ship collision avoidance.
International Journal of Simulation and Process Modelling, 2020 Vol.15 No.1/2, pp.40 - 51
Received: 03 Aug 2018
Accepted: 08 Apr 2019
Published online: 21 Apr 2020 *