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An approach for development of a ship routing algorithm for application in the North Indian Ocean region
Institution:1. Department of Ocean Engineering and Naval Architecture, Indian Institute of Technology, Kharagpur, India;2. Department of Mechanical Engineering, Gitam Engineering College, Hyderabad, India;1. Dept. of Shipping and Marine Technology, Chalmers University of Technology, 41296 Gothenburg, Sweden;2. Dept. of Mathematical Sciences, Chalmers University of Technology, 41296 Gothenburg, Sweden;3. DNV-GL, No-1322, Hovik, Norway;1. College of Power and Energy Engineering, Harbin Engineering University, Harbin, 150001, Heilongjiang, China;2. College of Shipbuilding Engineering, Harbin Engineering University, Harbin, 150001, Heilongjiang, China;1. Department of Maritime Science, Kobe University, 5-1-1, Fukae Minami Machi, Higashinada-ku, Kobe, Hyogo 658-0022, Japan;2. Japan Agency for Marine-Earth Science and Technology, 3173-25, Showa Cho, Kanazawa-ku, Yokohama, Kanagawa 236-0001, Japan;3. Department of Mechanical Systems Engineering, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan;4. National Maritime Research Institute, 6-38-1, Shinkawa, Mitaka, Tokyo 181-0004, Japan;5. Imabari Shipbuilding Co. Ltd., 30 Showa-cho, Marugame, Kagawa 763-8511, Japan
Abstract:This paper presents a general approach for the development of a ship weather routing algorithm for determining optimal route which is taken here as the minimum-time route. The optimization model is based on a form of Dijkstra's algorithm. The developed algorithm is versatile and is capable of considering nearly all realistic practical constraints that a ship faces during her voyage. The ‘weight’ functions and the routes are determined by considering both involuntary and voluntary speed reduction. The algorithm is investigated using various realistic wave data for the North Indian Ocean region obtained from a 3rd generation WAM model. Illustrative examples of minimum-time sea routes on Arabian Sea and Bay-of-Bengal have been determined and presented to demonstrate the capability of the algorithm in handling many practical constraints within its framework.
Keywords:Ship-routing  Track-optimization  Added resistance  Wave-modeling
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