Journal
JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY
Volume 61, Issue 3, Pages 523-529Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1057/jors.2009.77
Keywords
shipping routes; fuel emissions; speed optimization; shortest paths
Funding
- DESIMAL project
- Research Council of Norway
- Canadian Natural Engineering Research Council [39682-05]
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Fuel consumption and emissions on a shipping route are typically a cubic function of speed. Given a shipping route consisting of a sequence of ports with a time window for the start of service, substantial savings can be achieved by optimizing the speed of each leg. This problem is cast as a non-linear continuous program, which can be solved by a non-linear programming solver. We propose an alternative solution methodology, in which the arrival times are discretized and the problem is solved as a shortest path problem on a directed acyclic graph. Extensive computational results confirm the superiority of the shortest path approach and the potential for fuel savings on shipping routes. Journal of the Operational Research Society (2010) 61, 523-529. doi: 10.1057/jors.2009.77 Published online 19 August 2009
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